publications

publications by categories in reversed chronological order. generated by jekyll-scholar.

2021

  1. AISTATS
    On the Privacy Properties of GAN-generated Samples
    Lin, Zinan, Fanti, Giulia, and Sekar, Vyas
    In Proc. AISTATS 2021
  2. USENIX Security
    Jaqen: A High-Performance Switch-Native Approach for Detecting and Mitigating Volumetric DDoS Attacks with Programmable Switches
    Liu, Zaoxing, Namkung, Hun, Nikolaidis, Georgios, Lee, Jeongkeun, Kim, Changhoon, Jin, Xin, Braverman, Vladimir, Yu, Minlan, and Sekar, Vyas
    In Proc. USENIX Security 2021
  3. IEEE S&P
    CANnon: Reliable and Stealthy Remote Shutdown Attacks via Unaltered Automotive Microcontrollers
    Kulandaivel, Sekar, Jain, Shalabh, Guarajardo, Jorge, and Sekar, Vyas
    In IEEE Sympoosium on Security and Privacy 2021
  4. NSDI
    Don’t Yank My Chain: Auditable NF Service Chaining
    Liu, Grace, Sadok, Hugo, Kohlbrenner, Anne, Parno, Bryan, Sekar, Vyas, and Sherry, Justine
    In Proc. NSDI 2021
  5. USENIX Security
    Accurately Measuring Global Risk of Amplification Attacks using AmpMap
    Moon, Soo-Jin, Yin, Yucheng, Sharma, Rahul Anand, Yuan, Yifei, Spring, Jonathan M., and Sekar, Vyas
    In Proc. USENIX Security 2021

2020

  1. Mobicom
    Joltik : Enabling Energy-Efficient “Future-Proof” Analytics on Low-Power Wide-Area Networks
    Yang, Mingran, Zhang, Junbo, Gadre, Akshay, Liu, Zaoxing, Kumar, Swarun, and Sekar, Vyas
    In Proc Mobicom 2020
  2. HotEdge
    Towards an Architecture for Trusted Edge IoT Security Gateways
    McCormack, Matt, Vasudevan, Amit, Liu, Guyue, Echeverrı́a, Sebastián, O’Meara, Kyle, Lewis, Grace A., and Sekar, Vyas
    In 3rd USENIX Workshop on Hot Topics in Edge Computing, HotEdge 2020, June 25-26, 2020 2020
  3. IMC
    Using GANs for Sharing Networked Time Series Data: Challenges, Initial Promise, and Open Questions
    Lin, Zinan, Jain, Alankar, Wang, Chen, Fanti, Giulia C., and Sekar, Vyas
    In IMC ’20: ACM Internet Measurement Conference, Virtual Event, USA, October 27-29, 2020 2020
  4. IMC
    Analyzing Third Party Service Dependencies in Modern Web Services: Have We Learned from the Mirai-Dyn Incident?
    Kashaf, Aqsa, Sekar, Vyas, and Agarwal, Yuvraj
    In IMC ’20: ACM Internet Measurement Conference, Virtual Event, USA, October 27-29, 2020 2020
  5. IoTDI
    Learning Context-Aware Policies from Multiple Smart Homes via Federated Multi-Task Learning
    Yu, Tianlong, Li, Tian, Sun, Yuqiong, Nanda, Susanta, Smith, Virginia, Sekar, Vyas, and Seshan, Srinivasan
    In Fifth IEEE/ACM International Conference on Internet-of-Things Design and Implementation, IoTDI 2020, Sydney, Australia, April 21-24, 2020 2020
  6. Sensys
    All that GLITTERs: Low-Power Spoof-Resilient Optical Markers for Augmented Reality
    Sharma, Rahul Anand, Dongare, Adwait, Miller, John, Wilkerson, Nicholas, Cohen, Daniel, Sekar, Vyas, Dutta, Prabal, and Rowe, Anthony
    In 19th ACM/IEEE International Conference on Information Processing in Sensor Networks, IPSN 2020, Sydney, Australia, April 21-24, 2020 2020
  7. NSDI
    NetSMC: A Custom Symbolic Model Checker for Stateful Network Verification
    Yuan, Yifei, Moon, Soo-Jin, Uppal, Sahil, Jia, Limin, and Sekar, Vyas
    In 17th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2020, Santa Clara, CA, USA, February 25-27, 2020 2020
  8. Sigcomm SPAN
    Fighting Fire with Light: Tackling Extreme Terabit DDoS Using Programmable Optics
    Hall, Matthew Nance, Liu, Guyue, Durairajan, Ramakrishnan, and Sekar, Vyas
    In Proceedings of the 2020 ACM SIGCOMM 2020 Workshop on Secure Programmable Network Infrastructure, SPIN@SIGCOMM 2020, Virtual Event, USA, August 14, 2020 2020
  9. Sigcomm
    TEA: Enabling State-Intensive Network Functions on Programmable Switches
    Kim, Daehyeok, Liu, Zaoxing, Zhu, Yibo, Kim, Changhoon, Lee, Jeongkeun, Sekar, Vyas, and Seshan, Srinivasan
    In SIGCOMM ’20: Proceedings of the 2020 Annual conference of the ACM Special Interest Group on Data Communication on the applications, technologies, architectures, and protocols for computer communication, Virtual Event, USA, August 10-14, 2020 2020
  10. Sigcomm
    Contention-Aware Performance Prediction For Virtualized Network Functions
    Manousis, Antonis, Sharma, Rahul Anand, Sekar, Vyas, and Sherry, Justine
    In SIGCOMM ’20: Proceedings of the 2020 Annual conference of the ACM Special Interest Group on Data Communication on the applications, technologies, architectures, and protocols for computer communication, Virtual Event, USA, August 10-14, 2020 2020
  11. WF-IoT
    KalKi: A Software-Defined IoT Security Platform
    Echeverrı́a, Sebastián, Lewis, Grace A., Mazzotta, Craig, Grabowski, Christopher, O’Meara, Kyle, Vasudevan, Amit, Novakouski, Marc, McCormack, Matthew, and Sekar, Vyas
    In 6th IEEE World Forum on Internet of Things, WF-IoT 2020, New Orleans, LA, USA, June 2-16, 2020 2020
  12. arxiv
    Fighting Fire with Light: A Case for Defending DDoS Attacks Using the Optical Layer
    Hall, Matthew Nance, Durairajan, Ramakrishnan, and Sekar, Vyas
    CoRR 2020
  13. arxiv
    Unleashing In-network Computing on Scientific Workloads
    Kim, Daehyeok, Jain, Ankush, Liu, Zaoxing, Amvrosiadis, George, Hazen, Damian, Settlemyer, Bradley W., and Sekar, Vyas
    CoRR 2020
  14. arxiv
    Why Spectral Normalization Stabilizes GANs: Analysis and Improvements
    Lin, Zinan, Sekar, Vyas, and Fanti, Giulia C.
    CoRR 2020

2019

  1. USENIX Login
    Building an Nmap for Your Car
    Kulandaivel, Sekar, Goyal, Tushar, Agrawal, Arnav Kumar, and Sekar, Vyas
    login Usenix Mag. 2019
  2. EdgeComputing
    Sandpaper: mitigating performance interference in CDN edge proxies
    Helt, Jeffrey, Feng, Guoyao, Seshan, Srinivasan, and Sekar, Vyas
    In Proceedings of the 4th ACM/IEEE Symposium on Edge Computing, SEC 2019, Arlington, Virginia, USA, November 7-9, 2019 2019
  3. HotNets
    Towards Oblivious Network Analysis using Generative Adversarial Networks
    Lin, Zinan, Moon, Soo-Jin, Zarate, Carolina M., Mulagalapalli, Ritika, Kulandaivel, Sekar, Fanti, Giulia C., and Sekar, Vyas
    In Proceedings of the 18th ACM Workshop on Hot Topics in Networks, HotNets 2019, Princeton, NJ, USA, November 13-15, 2019 2019
  4. ICDCS
    Practical Verifiable In-network Filtering for DDoS Defense
    Gong, Deli, Tran, Muoi, Shinde, Shweta, Jin, Hao, Sekar, Vyas, Saxena, Prateek, and Kang, Min Suk
    In 39th IEEE International Conference on Distributed Computing Systems, ICDCS 2019, Dallas, TX, USA, July 7-10, 2019 2019
  5. NSDI
    FreeFlow: Software-based Virtual RDMA Networking for Containerized Clouds
    Kim, Daehyeok, Yu, Tianlong, Liu, Hongqiang Harry, Zhu, Yibo, Padhye, Jitu, Raindel, Shachar, Guo, Chuanxiong, Sekar, Vyas, and Seshan, Srinivasan
    In 16th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2019, Boston, MA, February 26-28, 2019 2019
  6. NSDI
    Alembic: Automated Model Inference for Stateful Network Functions
    Moon, Soo-Jin, Helt, Jeffrey, Yuan, Yifei, Bieri, Yves, Banerjee, Sujata, Sekar, Vyas, Wu, Wenfei, Yannakakis, Mihalis, and Zhang, Ying
    In 16th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2019, Boston, MA, February 26-28, 2019 2019
  7. Sigcomm
    Nitrosketch: robust and general sketch-based monitoring in software switches
    Liu, Zaoxing, Ben-Basat, Ran, Einziger, Gil, Kassner, Yaron, Braverman, Vladimir, Friedman, Roy, and Sekar, Vyas
    In Proceedings of the ACM Special Interest Group on Data Communication, SIGCOMM 2019, Beijing, China, August 19-23, 2019 2019
  8. USENIX Security
    CANvas: Fast and Inexpensive Automotive Network Mapping
    Kulandaivel, Sekar, Goyal, Tushar, Agrawal, Arnav Kumar, and Sekar, Vyas
    In 28th USENIX Security Symposium, USENIX Security 2019, Santa Clara, CA, USA, August 14-16, 2019 2019
  9. arxiv
    Practical Verifiable In-network Filtering for DDoS defense
    Gong, Deli, Tran, Muoi, Shinde, Shweta, Jin, Hao, Sekar, Vyas, Saxena, Prateek, and Kang, Min Suk
    CoRR 2019
  10. arxiv
    Generating High-fidelity, Synthetic Time Series Datasets with DoppelGANger
    Lin, Zinan, Jain, Alankar, Wang, Chen, Fanti, Giulia C., and Sekar, Vyas
    CoRR 2019
  11. arxiv
    Privacy for Free: Communication-Efficient Learning with Differential Privacy Using Sketches
    Li, Tian, Liu, Zaoxing, Sekar, Vyas, and Smith, Virginia
    CoRR 2019
  12. arxiv
    Enhancing the Privacy of Federated Learning with Sketching
    Liu, Zaoxing, Li, Tian, Smith, Virginia, and Sekar, Vyas
    CoRR 2019

2018

  1. CoNext
    Intent-driven composition of resource-management SDN applications
    Heorhiadi, Victor, Chandrasekaran, Sanjay, Reiter, Michael K., and Sekar, Vyas
    In Proceedings of the 14th International Conference on emerging Networking EXperiments and Technologies, CoNEXT 2018, Heraklion, Greece, December 04-07, 2018 2018
  2. IMC
    How to Catch when Proxies Lie: Verifying the Physical Locations of Network Proxies with Active Geolocation
    Weinberg, Zachary, Cho, Shinyoung, Christin, Nicolas, Sekar, Vyas, and Gill, Phillipa
    In Proceedings of the Internet Measurement Conference 2018, IMC 2018, Boston, MA, USA, October 31 - November 02, 2018 2018
  3. NSDI
    Efficient and Correct Test Scheduling for Ensembles of Network Policies
    Yuan, Yifei, Chandrasekaran, Sanjay, Jia, Limin, and Sekar, Vyas
    In 15th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2018, Renton, WA, USA, April 9-11, 2018 2018
  4. SECON
    Rethinking Virtual Network Embedding in Reconfigurable Networks
    Curran, Max, Rahman, Md. Shaifur, Gupta, Himanshu, and Sekar, Vyas
    In 15th Annual IEEE International Conference on Sensing, Communication, and Networking, SECON 2018, Hong Kong, China, June 11-13, 2018 2018
  5. Sigcomm
    Hyperloop: group-based NIC-offloading to accelerate replicated transactions in multi-tenant storage systems
    Kim, Daehyeok, Memaripour, Amirsaman, Badam, Anirudh, Zhu, Yibo, Liu, Hongqiang Harry, Padhye, Jitu, Raindel, Shachar, Swanson, Steven, Sekar, Vyas, and Seshan, Srinivasan
    In Proceedings of the 2018 Conference of the ACM Special Interest Group on Data Communication, SIGCOMM 2018, Budapest, Hungary, August 20-25, 2018 2018
  6. arxiv
    Oh, What a Fragile Web We Weave: Third-party Service Dependencies In Modern Webservices and Implications
    Kashaf, Aqsa, Zarate, Carolina, Wang, Hanrou, Agarwal, Yuvraj, and Sekar, Vyas
    CoRR 2018

2017

  1. S&P Magazine
    Rethinking Security in the Era of Cloud Computing
    Aikat, Jay, Akella, Aditya, Chase, Jeffrey S., Juels, Ari, Reiter, Michael K., Ristenpart, Thomas, Sekar, Vyas, and Swift, Michael M.
    IEEE Secur. Priv. 2017
  2. IEEE Trans
    Tradeoffs Between Cost and Performance for CDN Provisioning Based on Coordinate Transformation
    Yin, Hao, Zhang, Xu, Zhao, Shuoyao, Luo, Yan, Tian, Chen, and Sekar, Vyas
    IEEE Trans. Multim. 2017
  3. ACC
    On the efficiency and fairness of multiplayer HTTP-based adaptive video streaming
    Yin, Xiaoqi, Bartulovic, Mihovil, Sekar, Vyas, and Sinopoli, Bruno
    In 2017 American Control Conference, ACC 2017, Seattle, WA, USA, May 24-26, 2017 2017
  4. Comsnets
    Unleashing the Potential of Data-Driven Networking
    Jiang, Junchen, Sekar, Vyas, Stoica, Ion, and Zhang, Hui
    In Communication Systems and Networks - 9th International Conference, COMSNETS 2017, Bengaluru, India, January 4-8, 2017, Revised Selected Papers and Invited Papers 2017
  5. Hotnets
    Biases in Data-Driven Networking, and What to Do About Them
    Bartulovic, Mihovil, Jiang, Junchen, Balakrishnan, Sivaraman, Sekar, Vyas, and Sinopoli, Bruno
    In Proceedings of the 16th ACM Workshop on Hot Topics in Networks, Palo Alto, CA, USA, HotNets 2017, November 30 - December 01, 2017 2017
  6. ICDCS
    Flow Reconnaissance via Timing Attacks on SDN Switches
    Liu, Sheng, Reiter, Michael K., and Sekar, Vyas
    In 37th IEEE International Conference on Distributed Computing Systems, ICDCS 2017, Atlanta, GA, USA, June 5-8, 2017 2017
  7. NDSS
    PSI: Precise Security Instrumentation for Enterprise Networks
    Yu, Tianlong, Fayaz, Seyed Kaveh, Collins, Michael P., Sekar, Vyas, and Seshan, Srinivasan
    In 24th Annual Network and Distributed System Security Symposium, NDSS 2017, San Diego, California, USA, February 26 - March 1, 2017 2017
  8. NSDI
    Pytheas: Enabling Data-Driven Quality of Experience Optimization Using Group-Based Exploration-Exploitation
    Jiang, Junchen, Sun, Shijie, Sekar, Vyas, and Zhang, Hui
    In 14th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2017, Boston, MA, USA, March 27-29, 2017 2017
  9. Sigcomm
    A High Performance Packet Core for Next Generation Cellular Networks
    Qazi, Zafar Ayyub, Walls, Melvin, Panda, Aurojit, Sekar, Vyas, Ratnasamy, Sylvia, and Shenker, Scott
    In Proceedings of the Conference of the ACM Special Interest Group on Data Communication, SIGCOMM 2017, Los Angeles, CA, USA, August 21-25, 2017 2017
  10. arxiv
    Vulnerabilities of Electric Vehicle Battery Packs to Cyberattacks on Auxiliary Components
    Sripad, Shashank, Kulandaivel, Sekar, Pande, Vikram, Sekar, Vyas, and Viswanathan, Venkatasubramanian
    CoRR 2017

2016

  1. CCR
    EZ-PC: program committee selection made easy
    Sekar, Vyas
    Comput. Commun. Rev. 2016
  2. IEEE Trans
    Enhancing Video Accessibility and Availability Using Information-Bound References
    Anand, Ashok, Balachandran, Athula, Akella, Aditya, Sekar, Vyas, and Seshan, Srinivasan
    IEEE/ACM Trans. Netw. 2016
  3. AsiaCCS
    CICADAS: Congesting the Internet with Coordinated and Decentralized Pulsating Attacks
    Ke, Yu-Ming, Chen, Chih-Wei, Hsiao, Hsu-Chun, Perrig, Adrian, and Sekar, Vyas
    In Proceedings of the 11th ACM on Asia Conference on Computer and Communications Security, AsiaCCS 2016, Xi’an, China, May 30 - June 3, 2016 2016
  4. Hotnets
    FreeFlow: High Performance Container Networking
    Yu, Tianlong, Noghabi, Shadi Abdollahian, Raindel, Shachar, Liu, Hongqiang Harry, Padhye, Jitu, and Sekar, Vyas
    In Proceedings of the 15th ACM Workshop on Hot Topics in Networks, HotNets 2016, Atlanta, GA, USA, November 9-10, 2016 2016
  5. ICDCS
    Gremlin: Systematic Resilience Testing of Microservices
    Heorhiadi, Victor, Rajagopalan, Shriram, Jamjoom, Hani, Reiter, Michael K., and Sekar, Vyas
    In 36th IEEE International Conference on Distributed Computing Systems, ICDCS 2016, Nara, Japan, June 27-30, 2016 2016
  6. NDSS
    SPIFFY: Inducing Cost-Detectability Tradeoffs for Persistent Link-Flooding Attacks
    Kang, Min Suk, Gligor, Virgil D., and Sekar, Vyas
    In 23rd Annual Network and Distributed System Security Symposium, NDSS 2016, San Diego, California, USA, February 21-24, 2016 2016
  7. NSDI
    CFA: A Practical Prediction System for Video QoE Optimization
    Jiang, Junchen, Sekar, Vyas, Milner, Henry, Shepherd, Davis, Stoica, Ion, and Zhang, Hui
    In 13th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2016, Santa Clara, CA, USA, March 16-18, 2016 2016
  8. NSDI
    Simplifying Software-Defined Network Optimization Using SOL
    Heorhiadi, Victor, Reiter, Michael K., and Sekar, Vyas
    In 13th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2016, Santa Clara, CA, USA, March 16-18, 2016 2016
  9. NSDI
    BUZZ: Testing Context-Dependent Policies in Stateful Networks
    Fayaz, Seyed Kaveh, Yu, Tianlong, Tobioka, Yoshiaki, Chaki, Sagar, and Sekar, Vyas
    In 13th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2016, Santa Clara, CA, USA, March 16-18, 2016 2016
  10. OSDI
    Efficient Network Reachability Analysis Using a Succinct Control Plane Representation
    Fayaz, Seyed Kaveh, Sharma, Tushar, Fogel, Ari, Mahajan, Ratul, Millstein, Todd D., Sekar, Vyas, and Varghese, George
    In 12th USENIX Symposium on Operating Systems Design and Implementation, OSDI 2016, Savannah, GA, USA, November 2-4, 2016 2016
  11. Sigcomm
    One Sketch to Rule Them All: Rethinking Network Flow Monitoring with UnivMon
    Liu, Zaoxing, Manousis, Antonis, Vorsanger, Gregory, Sekar, Vyas, and Braverman, Vladimir
    In Proceedings of the ACM SIGCOMM 2016 Conference, Florianopolis, Brazil, August 22-26, 2016 2016
  12. Sigcomm
    CS2P: Improving Video Bitrate Selection and Adaptation with Data-Driven Throughput Prediction
    Sun, Yi, Yin, Xiaoqi, Jiang, Junchen, Sekar, Vyas, Lin, Fuyuan, Wang, Nanshu, Liu, Tao, and Sinopoli, Bruno
    In Proceedings of the ACM SIGCOMM 2016 Conference, Florianopolis, Brazil, August 22-26, 2016 2016
  13. Sigcomm
    Via: Improving Internet Telephony Call Quality Using Predictive Relay Selection
    Jiang, Junchen, Das, Rajdeep, Ananthanarayanan, Ganesh, Chou, Philip A., Padmanabhan, Venkat N., Sekar, Vyas, Dominique, Esbjorn, Goliszewski, Marcin, Kukoleca, Dalibor, Vafin, Renat, and Zhang, Hui
    In Proceedings of the ACM SIGCOMM 2016 Conference, Florianopolis, Brazil, August 22-26, 2016 2016
  14. SOSR
    KLEIN: A Minimally Disruptive Design for an Elastic Cellular Core
    Qazi, Zafar Ayyub, Penumarthi, Phani Krishna, Sekar, Vyas, Gopalakrishnan, Vijay, Joshi, Kaustubh, and Das, Samir Ranjan
    In Proceedings of the Symposium on SDN Research, SOSR 2016, Santa Clara, CA, USA, March 14 - 15, 2016 2016
  15. NSPW
    Defending Against Evolving DDoS Attacks: A Case Study Using Link Flooding Incidents
    Kang, Min Suk, Gligor, Virgil D., and Sekar, Vyas
    In Security Protocols XXIV - 24th International Workshop, Brno, Czech Republic, April 7-8, 2016, Revised Selected Papers 2016
  16. arxiv
    NetMemex: Providing Full-Fidelity Traffic Archival
    Lim, Hyeontaek, Sekar, Vyas, Abe, Yoshihisa, and Andersen, David G.
    CoRR 2016
  17. arxiv
    On the Efficiency and Fairness of Multiplayer HTTP-based Adaptive Video Streaming
    Yin, Xiaoqi, Bartulovic, Mihovil, Sekar, Vyas, and Sinopoli, Bruno
    CoRR 2016
  18. arxiv
    Shedding Light on the Adoption of Let’s Encrypt
    Manousis, Antonis, Ragsdale, Roy, Draffin, Ben, Agrawal, Adwiteeya, and Sekar, Vyas
    CoRR 2016

2015

  1. CCS
    Nomad: Mitigating Arbitrary Cloud Side Channels via Provider-Assisted Migration
    Moon, Soo-Jin, Sekar, Vyas, and Reiter, Michael K.
    In Proceedings of the 22nd ACM SIGSAC Conference on Computer and Communications Security, Denver, CO, USA, October 12-16, 2015 2015
  2. Hotnets
    Handling a trillion (unfixable) flaws on a billion devices: Rethinking network security for the Internet-of-Things
    Yu, Tianlong, Sekar, Vyas, Seshan, Srinivasan, Agarwal, Yuvraj, and Xu, Chenren
    In Proceedings of the 14th ACM Workshop on Hot Topics in Networks, Philadelphia, PA, USA, November 16 - 17, 2015 2015
  3. Hotnets
    Enabling a "RISC" Approach for Software-Defined Monitoring using Universal Streaming
    Liu, Zaoxing, Vorsanger, Gregory, Braverman, Vladimir, and Sekar, Vyas
    In Proceedings of the 14th ACM Workshop on Hot Topics in Networks, Philadelphia, PA, USA, November 16 - 17, 2015 2015
  4. NSDI
    C3: Internet-Scale Control Plane for Video Quality Optimization
    Ganjam, Aditya, Siddiqui, Faisal, Zhan, Jibin, Liu, Xi, Stoica, Ion, Jiang, Junchen, Sekar, Vyas, and Zhang, Hui
    In 12th USENIX Symposium on Networked Systems Design and Implementation, NSDI 15, Oakland, CA, USA, May 4-6, 2015 2015
  5. NSDI
    Klotski: Reprioritizing Web Content to Improve User Experience on Mobile Devices
    Butkiewicz, Michael, Wang, Daimeng, Wu, Zhe, Madhyastha, Harsha V., and Sekar, Vyas
    In 12th USENIX Symposium on Networked Systems Design and Implementation, NSDI 15, Oakland, CA, USA, May 4-6, 2015 2015
  6. PAM
    Internet Outages, the Eyewitness Accounts: Analysis of the Outages Mailing List
    Banerjee, Ritwik, Razaghpanah, Abbas, Chiang, Luis, Mishra, Akassh, Sekar, Vyas, Choi, Yejin, and Gill, Phillipa
    In Passive and Active Measurement - 16th International Conference, PAM 2015, New York, NY, USA, March 19-20, 2015, Proceedings 2015
  7. Sigcomm
    A Control-Theoretic Approach for Dynamic Adaptive Video Streaming over HTTP
    Yin, Xiaoqi, Jindal, Abhishek, Sekar, Vyas, and Sinopoli, Bruno
    In Proceedings of the 2015 ACM Conference on Special Interest Group on Data Communication, SIGCOMM 2015, London, United Kingdom, August 17-21, 2015 2015
  8. USENIX Security
    Bohatei: Flexible and Elastic DDoS Defense
    Fayaz, Seyed Kaveh, Tobioka, Yoshiaki, Sekar, Vyas, and Bailey, Michael
    In 24th USENIX Security Symposium, USENIX Security 15, Washington, D.C., USA, August 12-14, 2015 2015
  9. arxiv
    Accelerating the Development of Software-Defined Network Optimization Applications Using SOL
    Heorhiadi, Victor, Reiter, Michael K., and Sekar, Vyas
    CoRR 2015
  10. arxiv
    DDA: Cross-Session Throughput Prediction with Applications to Video Bitrate Selection
    Jiang, Junchen, Sekar, Vyas, and Sun, Yi
    CoRR 2015
  11. arxiv
    Scalable Testing of Context-Dependent Policies over Stateful Data Planes with Armstrong
    Fayaz, Seyed Kaveh, Tobioka, Yoshiaki, Chaki, Sagar, and Sekar, Vyas
    CoRR 2015
  12. arxiv
    Analyzing TCP Throughput Stability and Predictability with Implications for Adaptive Video Streaming
    Sun, Yi, Yin, Xiaoqi, Wang, Nanshu, Jiang, Junchen, Sekar, Vyas, Jin, Yun, and Sinopoli, Bruno
    CoRR 2015
  13. arxiv
    Bohatei: Flexible and Elastic DDoS Defense
    Fayaz, Seyed Kaveh, Tobioka, Yoshiaki, Sekar, Vyas, and Bailey, Michael
    CoRR 2015

2014

  1. IEEE Trans
    Improving Fairness, Efficiency, and Stability in HTTP-Based Adaptive Video Streaming With Festive
    Jiang, Junchen, Sekar, Vyas, and Zhang, Hui
    IEEE/ACM Trans. Netw. 2014
  2. IEEE Trans
    Characterizing Web Page Complexity and Its Impact
    Butkiewicz, Michael, Madhyastha, Harsha V., and Sekar, Vyas
    IEEE/ACM Trans. Netw. 2014
  3. Conext
    Trace-Driven Analysis of ICN Caching Algorithms on Video-on-Demand Workloads
    Sun, Yi, Fayaz, Seyed Kaveh, Guo, Yang, Sekar, Vyas, Jin, Yun, Kâafar, Mohamed Ali, and Uhlig, Steve
    In Proceedings of the 10th ACM International on Conference on emerging Networking Experiments and Technologies, CoNEXT 2014, Sydney, Australia, December 2-5, 2014 2014
  4. Hotnets
    Toward a Principled Framework to Design Dynamic Adaptive Streaming Algorithms over HTTP
    Yin, Xiaoqi, Sekar, Vyas, and Sinopoli, Bruno
    In Proceedings of the 13th ACM Workshop on Hot Topics in Networks, HotNets-XIII, Los Angeles, CA, USA, October 27-28, 2014 2014
  5. Hotnets
    Using Video-Based Measurements to Generate a Real-Time Network Traffic Map
    Sun, Yi, Jiang, Junchen, Sekar, Vyas, Zhang, Hui, Lin, Fuyuan, and Wang, Nanshu
    In Proceedings of the 13th ACM Workshop on Hot Topics in Networks, HotNets-XIII, Los Angeles, CA, USA, October 27-28, 2014 2014
  6. Hotnets
    EONA: Experience-Oriented Network Architecture
    Jiang, Junchen, Liu, Xi, Sekar, Vyas, Stoica, Ion, and Zhang, Hui
    In Proceedings of the 13th ACM Workshop on Hot Topics in Networks, HotNets-XIII, Los Angeles, CA, USA, October 27-28, 2014 2014
  7. ICISS
    SNIPS: A Software-Defined Approach for Scaling Intrusion Prevention Systems via Offloading
    Heorhiadi, Victor, Fayaz, Seyed Kaveh, Reiter, Michael K., and Sekar, Vyas
    In Information Systems Security - 10th International Conference, ICISS 2014, Hyderabad, India, December 16-20, 2014, Proceedings 2014
  8. IMC
    A First Look at Performance in Mobile Virtual Network Operators
    Zarinni, Fatima, Chakraborty, Ayon, Sekar, Vyas, Das, Samir R., and Gill, Phillipa
    In Proceedings of the 2014 Internet Measurement Conference, IMC 2014, Vancouver, BC, Canada, November 5-7, 2014 2014
  9. NSDI
    Enforcing Network-Wide Policies in the Presence of Dynamic Middlebox Actions using FlowTags
    Fayazbakhsh, Seyed Kaveh, Chiang, Luis, Sekar, Vyas, Yu, Minlan, and Mogul, Jeffrey C.
    In Proceedings of the 11th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2014, Seattle, WA, USA, April 2-4, 2014 2014
  10. ONS
    Extending SDN to Handle Dynamic Middlebox Actions via FlowTags
    Fayazbakhsh, Seyed Kaveh, Chiang, Luis, Sekar, Vyas, Yu, Minlan, and Mogul, Jeffrey C.
    In Open Networking Summit 2014 - Research Track, ONS 2014, Santa Clara, CA, USA, March 2-4, 2014 2014
  11. HotSDN
    Testing stateful and dynamic data planes with FlowTest
    Fayaz, Seyed Kaveh, and Sekar, Vyas
    In Proceedings of the third workshop on Hot topics in software defined networking, HotSDN ’14, Chicago, Illinois, USA, August 22, 2014 2014
  12. Sigcomm
    FireFly: a reconfigurable wireless data center fabric using free-space optics
    Azimi, Navid Hamed, Qazi, Zafar Ayyub, Gupta, Himanshu, Sekar, Vyas, Das, Samir R., Longtin, Jon P., Shah, Himanshu, and Tanwer, Ashish
    In ACM SIGCOMM 2014 Conference, SIGCOMM’14, Chicago, IL, USA, August 17-22, 2014 2014
  13. arxiv
    A Framework to Quantify the Benefits of Network Functions Virtualization in Cellular Networks
    Qazi, Zafar Ayyub, Sekar, Vyas, and Das, Samir Ranjan
    CoRR 2014

2013

  1. CACM
    Understanding the impact of video quality on user engagement
    Dobrian, Florin, Awan, Asad, Joseph, Dilip Antony, Ganjam, Aditya, Zhan, Jibin, Sekar, Vyas, Stoica, Ion, and Zhang, Hui
    Commun. ACM 2013
  2. HotMiddlebox
    Verifiable network function outsourcing: requirements, challenges, and roadmap
    Fayazbakhsh, Seyed Kaveh, Reiter, Michael K., and Sekar, Vyas
    In Proceedings of the 2013 workshop on Hot topics in middleboxes and network function virtualization, HotMiddlebox 2013, Santa Barbara, California, USA, December 9, 2013 2013
  3. Conext
    Enhancing video accessibility and availability using information-bound references
    Anand, Ashok, Balachandran, Athula, Akella, Aditya, Sekar, Vyas, and Seshan, Srinivasan
    In Conference on emerging Networking Experiments and Technologies, CoNEXT ’13, Santa Barbara, CA, USA, December 9-12, 2013 2013
  4. Conext
    Shedding light on the structure of internet video quality problems in the wild
    Jiang, Junchen, Sekar, Vyas, Stoica, Ion, and Zhang, Hui
    In Conference on emerging Networking Experiments and Technologies, CoNEXT ’13, Santa Barbara, CA, USA, December 9-12, 2013 2013
  5. Hotnets
    Patch panels in the sky: a case for free-space optics in data centers
    Azimi, Navid Hamed, Gupta, Himanshu, Sekar, Vyas, and Das, Samir R.
    In Twelfth ACM Workshop on Hot Topics in Networks, HotNets-XII, College Park, MD, USA, November 21-22, 2013 2013
  6. Hotnets
    Analyzing the potential benefits of CDN augmentation strategies for internet video workloads
    Balachandran, Athula, Sekar, Vyas, Akella, Aditya, and Seshan, Srinivasan
    In Proceedings of the 2013 Internet Measurement Conference, IMC 2013, Barcelona, Spain, October 23-25, 2013 2013
  7. HotSDN
    FlowTags: enforcing network-wide policies in the presence of dynamic middlebox actions
    Fayazbakhsh, Seyed Kaveh, Sekar, Vyas, Yu, Minlan, and Mogul, Jeffrey C.
    In Proceedings of the Second ACM SIGCOMM Workshop on Hot Topics in Software Defined Networking, HotSDN 2013, The Chinese University of Hong Kong, Hong Kong, China, Friday, August 16, 2013 2013
  8. Sigcomm
    SIMPLE-fying middlebox policy enforcement using SDN
    Qazi, Zafar Ayyub, Tu, Cheng-Chun, Chiang, Luis, Miao, Rui, Sekar, Vyas, and Yu, Minlan
    In ACM SIGCOMM 2013 Conference, SIGCOMM’13, Hong Kong, China, August 12-16, 2013 2013
  9. Sigcomm
    Less pain, most of the gain: incrementally deployable ICN
    Fayazbakhsh, Seyed Kaveh, Lin, Yin, Tootoonchian, Amin, Ghodsi, Ali, Koponen, Teemu, Maggs, Bruce M., Ng, K. C., Sekar, Vyas, and Shenker, Scott
    In ACM SIGCOMM 2013 Conference, SIGCOMM’13, Hong Kong, China, August 12-16, 2013 2013
  10. Sigcomm
    Developing a predictive model of quality of experience for internet video
    Balachandran, Athula, Sekar, Vyas, Akella, Aditya, Seshan, Srinivasan, Stoica, Ion, and Zhang, Hui
    In ACM SIGCOMM 2013 Conference, SIGCOMM’13, Hong Kong, China, August 12-16, 2013 2013
  11. Sigmetrics
    Understanding internet video viewing behavior in the wild
    Balachandran, Athula, Sekar, Vyas, Akella, Aditya, and Seshan, Srinivasan
    In ACM SIGMETRICS / International Conference on Measurement and Modeling of Computer Systems, SIGMETRICS ’13, Pittsburgh, PA, USA, June 17-21, 2013 2013
  12. VEE
    Towards verifiable resource accounting for outsourced computation
    Chen, Chen, Maniatis, Petros, Perrig, Adrian, Vasudevan, Amit, and Sekar, Vyas
    In ACM SIGPLAN/SIGOPS International Conference on Virtual Execution Environments (co-located with ASPLOS 2013), VEE ’13, Houston, TX, USA, March 16-17, 2013 2013
  13. HotMobile
    Enabling the transition to the mobile web with WebSieve
    Butkiewicz, Michael, Wu, Zhe, Li, Shunan, Murali, Pavithra, Hristidis, Vagelis, Madhyastha, Harsha V., and Sekar, Vyas
    In 14th Workshop on Mobile Computing Systems and Applications, HotMobile ’13, Jekyll Island, GA, USA, February 26-27, 2013 2013
  14. arxiv
    Stratos: A Network-Aware Orchestration Layer for Middleboxes in the Cloud
    Gember, Aaron, Krishnamurthy, Anand, John, Saul St., Grandl, Robert, Gao, Xiaoyang, Anand, Ashok, Benson, Theophilus, Akella, Aditya, and Sekar, Vyas
    CoRR 2013

2012

  1. Conext
    Improving fairness, efficiency, and stability in HTTP-based adaptive video streaming with FESTIVE
    Jiang, Junchen, Sekar, Vyas, and Zhang, Hui
    In Conference on emerging Networking Experiments and Technologies, CoNEXT ’12, Nice, France - December 10 - 13, 2012 2012
  2. Conext
    New opportunities for load balancing in network-wide intrusion detection systems
    Heorhiadi, Victor, Reiter, Michael K., and Sekar, Vyas
    In Conference on emerging Networking Experiments and Technologies, CoNEXT ’12, Nice, France - December 10 - 13, 2012 2012
  3. Hotnets
    A quest for an Internet video quality-of-experience metric
    Balachandran, Athula, Sekar, Vyas, Akella, Aditya, Seshan, Srinivasan, Stoica, Ion, and Zhang, Hui
    In 11th ACM Workshop on Hot Topics in Networks, HotNets-XI, Redmond, WA, USA - October 29 - 30, 2012 2012
  4. Hotnets
    CARE: content aware redundancy elimination for challenged networks
    Weinsberg, Udi, Li, Qingxi, Taft, Nina, Balachandran, Athula, Sekar, Vyas, Iannaccone, Gianluca, and Seshan, Srinivasan
    In 11th ACM Workshop on Hot Topics in Networks, HotNets-XI, Redmond, WA, USA - October 29 - 30, 2012 2012
  5. IMC
    Evolution of social-attribute networks: measurements, modeling, and implications using google+
    Gong, Neil Zhenqiang, Xu, Wenchang, Huang, Ling, Mittal, Prateek, Stefanov, Emil, Sekar, Vyas, and Song, Dawn
    In Proceedings of the 12th ACM SIGCOMM Internet Measurement Conference, IMC ’12, Boston, MA, USA, November 14-16, 2012 2012
  6. NSDI
    Design and Implementation of a Consolidated Middlebox Architecture
    Sekar, Vyas, Egi, Norbert, Ratnasamy, Sylvia, Reiter, Michael K., and Shi, Guangyu
    In Proceedings of the 9th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2012, San Jose, CA, USA, April 25-27, 2012 2012
  7. Sigcomm
    Multi-resource fair queueing for packet processing
    Ghodsi, Ali, Sekar, Vyas, Zaharia, Matei, and Stoica, Ion
    In ACM SIGCOMM 2012 Conference, SIGCOMM ’12, Helsinki, Finland - August 13 - 17, 2012 2012
  8. Sigcomm
    Making middleboxes someone else’s problem: network processing as a cloud service
    Sherry, Justine, Hasan, Shaddi, Scott, Colin, Krishnamurthy, Arvind, Ratnasamy, Sylvia, and Sekar, Vyas
    In ACM SIGCOMM 2012 Conference, SIGCOMM ’12, Helsinki, Finland - August 13 - 17, 2012 2012
  9. Sigcomm
    A case for a coordinated internet video control plane
    Liu, Xi, Dobrian, Florin, Milner, Henry, Jiang, Junchen, Sekar, Vyas, Stoica, Ion, and Zhang, Hui
    In ACM SIGCOMM 2012 Conference, SIGCOMM ’12, Helsinki, Finland - August 13 - 17, 2012 2012
  10. SOUPS
    Measuring user confidence in smartphone security and privacy
    Chin, Erika, Felt, Adrienne Porter, Sekar, Vyas, and Wagner, David A.
    In Symposium On Usable Privacy and Security, SOUPS ’12, Washington, DC, USA - July 11 - 13, 2012 2012
  11. arxiv
    CARE: Content Aware Redundancy Elimination for Disaster Communications on Damaged Networks
    Weinsberg, Udi, Balachandran, Athula, Taft, Nina, Iannaccone, Gianluca, Sekar, Vyas, and Seshan, Srinivasan
    CoRR 2012
  12. arxiv
    Evolution of Social-Attribute Networks: Measurements, Modeling, and Implications using Google+
    Gong, Neil Zhenqiang, Xu, Wenchang, Huang, Ling, Mittal, Prateek, Stefanov, Emil, Sekar, Vyas, and Song, Dawn
    CoRR 2012

2011

  1. CCSW
    Verifiable resource accounting for cloud computing services
    Sekar, Vyas, and Maniatis, Petros
    In Proceedings of the 3rd ACM Cloud Computing Security Workshop, CCSW 2011, Chicago, IL, USA, October 21, 2011 2011
  2. Hotnets
    The middlebox manifesto: enabling innovation in middlebox deployment
    Sekar, Vyas, Ratnasamy, Sylvia, Reiter, Michael K., Egi, Norbert, and Shi, Guangyu
    In Tenth ACM Workshop on Hot Topics in Networks (HotNets-X), HOTNETS ’11, Cambridge, MA, USA - November 14 - 15, 2011 2011
  3. IMC
    Understanding website complexity: measurements, metrics, and implications
    Butkiewicz, Michael, Madhyastha, Harsha V., and Sekar, Vyas
    In Proceedings of the 11th ACM SIGCOMM Internet Measurement Conference, IMC ’11, Berlin, Germany, November 2-, 2011 2011
  4. Sigcomm
    Understanding the impact of video quality on user engagement
    Dobrian, Florin, Sekar, Vyas, Awan, Asad, Stoica, Ion, Joseph, Dilip Antony, Ganjam, Aditya, Zhan, Jibin, and Zhang, Hui
    In Proceedings of the ACM SIGCOMM 2011 Conference on Applications, Technologies, Architectures, and Protocols for Computer Communications, Toronto, ON, Canada, August 15-19, 2011 2011

2010

  1. ACM TOMCCAP
    LiveSky: Enhancing CDN with P2P
    Yin, Hao, Liu, Xuening, Zhan, Tongyu, Sekar, Vyas, Qiu, Feng, Lin, Chuang, Zhang, Hui, and Li, Bo
    ACM Trans. Multim. Comput. Commun. Appl. 2010
  2. Comsnets
    Coordinated sampling sans Origin-Destination identifiers: Algorithms and analysis
    Sekar, Vyas, Gupta, Anupam, Reiter, Mike K., and Zhang, Hui
    In Second International Conference on Communication Systems and Networks, COMSNETS 2010, Bangalore, India, January 5-9, 2010 2010
  3. Conext
    Network-wide deployment of intrusion detection and prevention systems
    Sekar, Vyas, Krishnaswamy, Ravishankar, Gupta, Anupam, and Reiter, Michael K.
    In Proceedings of the 2010 ACM Conference on Emerging Networking Experiments and Technology, CoNEXT 2010, Philadelphia, PA, USA, November 30 - December 03, 2010 2010
  4. Hotnets
    A case for information-bound referencing
    Anand, Ashok, Akella, Aditya, Sekar, Vyas, and Seshan, Srinivasan
    In Proceedings of the 9th ACM Workshop on Hot Topics in Networks. HotNets 2010, Monterey, CA, USA - October 20 - 21, 2010 2010
  5. IMC
    Revisiting the case for a minimalist approach for network flow monitoring
    Sekar, Vyas, Reiter, Michael K., and Zhang, Hui
    In Proceedings of the 10th ACM SIGCOMM Internet Measurement Conference, IMC 2010, Melbourne, Australia - November 1-3, 2010 2010
  6. Homenets
    Tracking semantic relationships for effective data management in home networks
    Anand, Ashok, Gember, Aaron, Akella, Aditya, and Sekar, Vyas
    In Proceedings of the 2010 ACM SIGCOMM workshop on Home networks, HomeNets@SIGCOMM 2010, New Delhi, India, September 3, 2010 2010
  7. SIGCOMM Posters
    Flexible multimedia content retrieval using InfoNames
    Kumar, Arun, Anand, Ashok, Akella, Aditya, Balachandran, Athula, Sekar, Vyas, and Seshan, Srinivasan
    In Proceedings of the ACM SIGCOMM 2010 Conference on Applications, Technologies, Architectures, and Protocols for Computer Communications, New Delhi, India, August 30 -September 3, 2010 2010

2009

  1. ICISS
    Making Peer-Assisted Content Distribution Robust to Collusion Using Bandwidth Puzzles
    Reiter, Michael K., Sekar, Vyas, Spensky, Chad, and Zhang, Zhenghao
    In Information Systems Security, 5th International Conference, ICISS 2009, Kolkata, India, December 14-18, 2009, Proceedings 2009
  2. IMC
    Inside the bird’s nest: measurements of large-scale live VoD from the 2008 olympics
    Yin, Hao, Liu, Xuening, Qiu, Feng, Xia, Ning, Lin, Chuang, Zhang, Hui, Sekar, Vyas, and Min, Geyong
    In Proceedings of the 9th ACM SIGCOMM Internet Measurement Conference, IMC 2009, Chicago, Illinois, USA, November 4-6, 2009 2009
  3. Multimedia
    Design and deployment of a hybrid CDN-P2P system for live video streaming: experiences with LiveSky
    Yin, Hao, Liu, Xuening, Zhan, Tongyu, Sekar, Vyas, Qiu, Feng, Lin, Chuang, Zhang, Hui, and Li, Bo
    In Proceedings of the 17th International Conference on Multimedia 2009, Vancouver, British Columbia, Canada, October 19-24, 2009 2009
  4. Sigcomm
    SmartRE: an architecture for coordinated network-wide redundancy elimination
    Anand, Ashok, Sekar, Vyas, and Akella, Aditya
    In Proceedings of the ACM SIGCOMM 2009 Conference on Applications, Technologies, Architectures, and Protocols for Computer Communications, Barcelona, Spain, August 16-21, 2009 2009

2008

  1. IMC
    An empirical evaluation of entropy-based traffic anomaly detection
    Nychis, George, Sekar, Vyas, Andersen, David G., Kim, Hyong, and Zhang, Hui
    In Proceedings of the 8th ACM SIGCOMM Internet Measurement Conference, IMC 2008, Vouliagmeni, Greece, October 20-22, 2008 2008
  2. NSDI
    cSamp: A System for Network-Wide Flow Monitoring
    Sekar, Vyas, Reiter, Michael K., Willinger, Walter, Zhang, Hui, Kompella, Ramana Rao, and Andersen, David G.
    In 5th USENIX Symposium on Networked Systems Design & Implementation, NSDI 2008, April 16-18, 2008, San Francisco, CA, USA, Proceedings 2008
  3. ATC
    Remote Profiling of Resource Constraints of Web Servers Using Mini-Flash Crowds
    Ramamurthy, Pratap, Sekar, Vyas, Akella, Aditya, Krishnamurthy, Balachander, and Shaikh, Anees
    In 2008 USENIX Annual Technical Conference, Boston, MA, USA, June 22-27, 2008. Proceedings 2008

2007

    2006

    1. DSN
      A Multi-Resolution Approach for Worm Detection and Containment
      Sekar, Vyas, Xie, Yinglian, Reiter, Michael K., and Zhang, Hui
      In 2006 International Conference on Dependable Systems and Networks 2006), 25-28 June 2006, Philadelphia, Pennsylvania, USA, Proceedings 2006
    2. ICNP
      Forensic Analysis for Epidemic Attacks in Federated Networks
      Xie, Yinglian, Sekar, Vyas, Reiter, Michael K., and Zhang, Hui
      In Proceedings of the 14th IEEE International Conference on Network Protocols, ICNP 2006, November 12-15, 2006, Santa Barbara, California, USA 2006
    3. Sigmetrics
      Data streaming algorithms for estimating entropy of network traffic
      Lall, Ashwin, Sekar, Vyas, Ogihara, Mitsunori, Xu, Jun (Jim), and Zhang, Hui
      In Proceedings of the Joint International Conference on Measurement and Modeling of Computer Systems, SIGMETRICS/Performance 2006, Saint Malo, France, June 26-30, 2006 2006
    4. ATC
      LADS: Large-scale Automated DDoS Detection System
      Sekar, Vyas, Duffield, Nick G., Spatscheck, Oliver, Merwe, Jacobus E., and Zhang, Hui
      In Proceedings of the 2006 USENIX Annual Technical Conference, Boston, MA, USA, May 30 - June 3, 2006 2006

    2005

    1. IMC
      Sparse Approximations for High Fidelity Compression of Network Traffic Data
      Aiello, William, Gilbert, Anna C., Rexroad, Brian, and Sekar, Vyas
      In Proceedings of the 5th Internet Measurement Conference, IMC 2005, Berkeley, California, USA, October 19-21, 2005 2005
    2. IEEE S&P
      Worm Origin Identification Using Random Moonwalks
      Xie, Yinglian, Sekar, Vyas, Maltz, David A., Reiter, Michael K., and Zhang, Hui
      In 2005 IEEE Symposium on Security and Privacy (S&P 2005), 8-11 May 2005, Oakland, CA, USA 2005

    2004

    1. HotNets
      Toward a Framework for Internet Forensic Analysis
      Sekar, Vyas, Xie, Yinglian, Maltz, David A, Reiter, Michael K, and Zhang, Hui
      In Proc HotNets 2004

    2003

    1. ICC
      Routing for a single interface MCN architecture and pricing schemes for data traffic in multihop cellular networks
      Sekar, Vyas, Manoj, B. S., and Murthy, C. Siva Ram
      In Proceedings of IEEE International Conference on Communications, ICC 2003, Anchorage, Alaska, USA, 11-15 May, 2003 2003