Communications and Cognitive Networks

• S. Vakili, Q. Zhao, C. Liu, C.N. Chuah
  Hierarchical heavy hitter detection under unknown models
  IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), April, 2018.

• J. Gao, Q. Zhao, W. Ren, A. Swami, R. Ramanathan, A. Bar-Noy
  Dynamic Shortest Path Algorithms for Hypergraphs
  IEEE/ACM Transactions on Networking, vol. 23, no. 6, pp. 1805-1817, December, 2015.
  Also available at arXiv.org

• J. Gao, Q. Zhao, A. Swami
  The Thinnest Path Problem
  IEEE/ACM Transactions on Networking, vol. 23, no. 4, pp. 1176-1189, August, 2015.
  Also available at arXiv.org

• W. Ren, Q. Zhao, A. Swami
  Temporal Traffic Dynamics Improve the Connectivity of Ad Hoc Cognitive Radio Networks
  IEEE/ACM Transactions on Networking, vol. 22, no. 1, pp. 124-136, February, 2014.

• W. Ren, Q. Zhao, R. Ramanathan, J. Gao, A. Swami, A. Bar-Noy, M. Johnson, P. Basu
  Broadcasting in Multi-Radio Multi-Channel Wireless Networks using Simplicial Complexes
  ACM/Springer Journal of Wireless Networks, vol. 19, no. 6, pp. 1121-1133, August, 2013.

• H. Liu, K. Liu, Q. Zhao
  Learning in A Changing World: Restless Multiarmed Bandit with Unknown Dynamics
  IEEE Transactions on Information Theory, vol. 59, no. 3, pp. 1902-1916, March 2013.
  Also available at arXiv.org.

• P. Tehrani, L. Tong, Q. Zhao
  Asymptotically Efficient Multichannel Estimation for Opportunistic Spectrum Access
  IEEE Transactions on Signal Processing, vol. 60, no. 10, pp. 5347 – 5360, October, 2012.

• K. Liu, Q. Zhao
  Cooperative Game in Dynamic Spectrum Access with Unknown Model and Imperfect Sensing
  IEEE Transactions on Wireless Communications, vol. 11, no. 4, pp. 1596-1604, April, 2012.

• W. Ren, Q. Zhao, A. Swami
  Connectivity of Heterogeneous Wireless Networks
  IEEE Transactions on Information Theory, vol. 57, no. 7, pp. 4315-4332, July, 2011.
  Also available at arXiv.org.

• W. Ren, Q. Zhao, A. Swami
  On the Connectivity and Multihop Delay of Ad Hoc Cognitive Radio Networks
  IEEE Journal on Selected Areas in Communications (JSAC), vol. 29, no. 4, pp. 805-818, April, 2011.
  Also available at arXiv.org.

• Q. Zhao, J. Ye
  Quickest Detection in Multiple On-Off Processes
  IEEE Transactions on Signal Processing, vol. 58, no. 12, pp. 5994-6006, December, 2010.

• K. Liu, Q. Zhao
  Distributed Learning in Multi-Armed Bandit with Multiple Players
  IEEE Transactions on Signal Processing, vol. 58, no. 11, pp. 5667-5681, November, 2010.
  Also available at arXiv.org.

• K. Liu, Q. Zhao
  Indexability of Restless Bandit Problems and Optimality of Whittle Index for Dynamic Multichannel Access
  IEEE Transactions on Information Theory, vol. 56, no. 11, pp. 5547-5567, November, 2010.
  Also available at arXiv.org.

• K. Liu, Q. Zhao, B. Krishnamachari
  Dynamic Multichannel Access with Imperfect Channel State Detection
  IEEE Transactions on Signal Processing, vol. 58, No. 5, pp. 2795 – 2808, May, 2010.

• W. Ren, Q. Zhao, A. Swami
  Power Control in Cognitive Radio Networks: How to Cross a Multi-Lane Highway
  IEEE Journal on Selected Areas in Communications (JSAC), vol. 27, No. 7, pp. 1283-1296, September, 2009.
  Also available at arXiv.org.

• S.H. Ahmad, M. Liu, T. Javidi, Q. Zhao, B. Krishnamachari
  Optimality of Myopic Sensing in Multichannel Opportunistic Access
  IEEE Transactions on Information Theory, vol. 55, No. 9, pp. 4040-4050, September, 2009.
  Also available at arXiv.org.

• Y. Chen, Q. Zhao, A. Swami
  Distributed Spectrum Sensing and Access in Cognitive Radio Networks with Energy Constraint
  IEEE Transactions on Signal Processing, vol. 57, no. 2, pp. 783-797, February, 2009.

• M. Maskery, V. Krishnamurthy, Q. Zhao
  Decentralized Dynamic Spectrum Access for Cognitive Radios: Cooperative Design of a Non-cooperative Game
  IEEE Transactions on Communications, vol. 57, No. 2, pp. 459-469, February, 2009.

• Q. Zhao, B. Krishnamachari, K. Liu
  On Myopic Sensing for Multi-Channel Opportunistic Access: Structure, Optimality, and Performance
  IEEE Transactions on Wireless Communications, vol. 7, no. 12, pp. 5431-5440, December, 2008.
  Also available at arXiv.org.

• Y. Chen, Q. Zhao, A. Swami
  Joint Design and Separation Principle for Opportunistic Spectrum Access in the Presence of Sensing Errors
  IEEE Transactions on Information Theory, vol. 54, no. 5, pp. 2053-2071, May, 2008.
  Also available at arXiv.org.

• Q. Zhao, L. Tong, D. Counsil
  Energy-Aware Adaptive Routing for Large-Scale Ad Hoc Networks: Protocol and Performance Analysis
  IEEE Transactions on Mobile Computing, vol. 6, no. 9, pp. 1048-1059, September, 2007.

• Q. Zhao, A. Swami
  A Decision-Theoretic Framework for Opportunistic Spectrum Access
  IEEE Wireless Communications Magazine: Special Issue on Cognitive Wireless Networks, vol. 14, no. 4, pp. 14-20, August, 2007.

• Y. Chen, Q. Zhao
  An Integrated Approach to Energy-Aware Medium Access for Wireless Sensor Networks
  IEEE Transactions on Signal Processing, vol. 55, no. 7, pp. 3429-3444, July, 2007.

• Q. Zhao, B.M. Sadler
  A Survey of Dynamic Spectrum Access
  IEEE Signal Processing Magazine, vol. 24, no. 3, pp. 79-89, May, 2007.
  Also available at arXiv.org.

• Y. Chen, Q. Zhao, V. Krishnamurthy, D. Djonin
  Transmission Scheduling for Optimizing Sensor Network Lifetime: A Stochastic Shortest Path Approach
  IEEE Transactions on Signal Processing, vol. 55, no. 5, pp. 2294-2309, May, 2007.

• Q. Zhao, L. Tong, A. Swami, Y. Chen
  Decentralized Cognitive MAC for Opportunistic Spectrum Access in Ad Hoc Networks: A POMDP Framework
  IEEE Journal on Selected Areas in Communications (JSAC), vol. 25, no. 3, pp. 589-600, April, 2007.
  (Download Simulation Source Code)

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