2012

1. K. Liu and Q. Zhao
   
"Dynamic Intrusion Detection in Resource-Constrained Cyber Networks" paper (pdf).
to appear in Proc. of IEEE International Symposium on Information Theory (ISIT), July, 2012.
 
2. J. Gao, Q. Zhao, W. Ren, A. Swami, R. Ramanathan, A. Bar-Noy
   
"Dynamic Shortest Path Algorithms for Hypergraphs" paper (pdf).
in Proc. of the 10th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt), May, 2012.
 
3. K. Liu and Q. Zhao
   
"Adaptive Shortest-Path Routing under Unknown and Stochastically Varying Link States" paper (pdf).
in Proc. of the 10th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt), May, 2012.
 
4. S. Chen, L. Tong, and Q. Zhao
   
"Delay Optimal Multichannel Opportunistic Access" paper (pdf).
in Proc. of the 31st international Conference on Computer Communications (INFOCOM), March, 2012.
 
5. L. Li, A. Scaglione, A. Swami, Q. Zhao
   
"Phase Transition in Opinion Diffusion in Social Networks" paper (pdf)
in Proc. of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), March, 2012.
 
6. K. Liu and Q. Zhao
   
"Online Learning for Stochastic Linear Optimization Problems" paper (pdf)
in Proc. of Information Theory and Applications Workshop (ITA), February, 2012.
 

2011

7. K. Liu, R.R. Weber, and Q. Zhao
   
"Indexability and Whittle Index for Restless Bandit Problems Involving Reset Processes" paper (pdf).
in Proc. of the 50th IEEE Conference on Decision and Control (CDC), December, 2011.
 
8. P. Tehrani, Q. Zhao, and L. Tong
   
"Multi-Channel Opportunistic Spectrum Access in Unslotted Primary Systems with Unknown Models" paper (pdf).
in Proc. of IEEE Workshops on Computational Advances in Multi-Channel Sensor Array Processing (CAMSAP) , December, 2011.
 
9. Y. Zhai, P. Tehrani, L. Li, J. Zhao, Q. Zhao
   
"Dynamic Pricing under Binary Demand Uncertainty: A Multi-Armed Bandit with Correlated Arms" paper (pdf)
in Proc. of the 45th IEEE Asilomar Conference on Signals, Systems, and Computers, November, 2011.
 
10. L. Li, A. Scaglione, A. Swami, Q. Zhao
    
"Trust, Opinion Diffusion and Radicalization in Social Networks" paper (pdf)
in Proc. of the 45th IEEE Asilomar Conference on Signals, Systems, and Computers, November, 2011.
 
11. 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" paper (pdf),   full version (pdf)
in Proc. of the 8th IEEE International Conference on Mobile Ad-hoc and Sensor Systems (MASS), October, 2011.
 
12. K. Liu and Q. Zhao
    
"Multi-Armed Bandit Problems with Heavy Tail Reward Distributions" paper (pdf),   full version available at arXiv.org.
in Proc. of Allerton Conference on Communications, Control, and Computing, September, 2011.
 
13. P. Tehrani, L. Tong, and Q. Zhao
    
"Asymptotically Efficient Multi-Channel Estimation for Opportunistic Spectrum Access" paper (pdf),   full version (pdf).
in Proc. of the 12th IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) , June, 2011.
 
14. H. Liu, K. Liu, and Q. Zhao
    
"Logarithmic Weak Regret of Non-Bayesian Restless Multi-Armed Bandit" paper (pdf),   slides (pdf),   full version available at arXiv.org.
in Proc. of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), May, 2011.
 
15. W. Dai, Y. Gai, B. Krishnamachari, and Q. Zhao
    
"The Non-Bayesian Restless Multi-Armed Bandit: A Case of Near-Logarithmic Regret" paper (pdf),   slides (pdf)
in Proc. of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), May, 2011.
 
16. H. Liu, K. Liu, and Q. Zhao
    
"Learning and Sharing in A Changing World: Non-Bayesian Restless Bandit with Multiple Players" paper (pdf),   slides (pdf)
in Proc. of Information Theory and Applications Workshop (ITA), January, 2011.
 

2010

17. K. Liu, Q. Zhao, and B. Krishnamachari
    
"Distributed Learning under Imperfect Sensing in Cognitive Radio Networks" paper (pdf)
in Proc. of IEEE Asilomar Conference on Signals, Systems, and Computers, November, 2010.
 
18. K. Chan, A. Swami, Q. Zhao, and A. Scaglione
    
"Consensus Algorithms over Fading Channels" paper (pdf)
in Proc. of IEEE Military Communication Conference (MILCOM), October, 2010.
 
19. P. Tehrani and Q. Zhao
    
"Multichannel Scheduling and Its Connection to Queueing Network Control Problem" paper (pdf)
in Proc. of IEEE Military Communication Conference (MILCOM), October, 2010.
 
20. K. Liu and Q. Zhao
    
"Learning from Collisions in Cognitive Radio Networks: Time Division Fair Sharing Without Pre-Agreement" full version
in Proc. of IEEE Military Communication Conference (MILCOM), October, 2010.
 
21. K. Liu, Q. Zhao, and B. Krishnamachari
    
"Decentralized Multi-Armed Bandit with Imperfect Observations" paper (pdf),   slides (pdf)
in Proc. of Allerton Conference on Communications, Control, and Computing, September, 2010.
 
22. W. Ren, Q. Zhao, and A. Swami
    
"On the Connectivity and Multihop Delay of Ad Hoc Cognitive Radio Networks" paper (pdf),   full version,   slides (pdf)
in Proc. of IEEE International Conference on Communications (ICC), May, 2010.
 
23. Y. Wang, B. Krishnamachari, Q. Zhao, and M. Annavaram
    
"Markov-Optimal Sensing Policy for User State Estimation in Mobile Devices" paper (pdf)
in Proc. of ACM/IEEE International Conference on Information Processing in Sensor Networks (IPSN), April, 2010.
 
24. K. Liu and Q. Zhao
    
"Distributed Learning in Cognitive Radio Networks: Multi-Armed Bandit with Distributed Multiple Players" paper (pdf),   full version
in Proc. of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), March, 2010.
 
25. C. Wang, B. Krishnamachari, Q. Zhao, and G.E. Øien
    
"Performance of Round Robin Policies for Dynamic Multichannel Access" paper (pdf)
in Proc. of Information Theory and Applications Workshop (ITA), January, 2010.
 
26. K. Liu and Q. Zhao
    
"Decentralized Multi-Armed Bandit with Distributed Multiple Players" paper (pdf),   slides (pdf),   full version
in Proc. of Information Theory and Applications Workshop (ITA), January, 2010.
 

2009

27. K. Liu and Q. Zhao
    
"On the Myopic Policy for a Class of Restless Bandit Problems with Applications in Dynamic Multichannel Access" paper (pdf),   journal version (pdf)
in Proc. of the 48th IEEE Conference on Decision and Control (CDC), December, 2009.
 
28. W. Ren, X. Xiao, and Q. Zhao
    
"Minimum-Energy Multicast Tree in Cognitive Radio Networks" paper (pdf)
in Proc. of IEEE Asilomar Conference on Signals, Systems, and Computers, November, 2009.
 
29. Y. Wang, B. Krishnamachari, Q. Zhao, and M. Annavaram
    
"The Tradeoff between Energy Efficiency and User State Estimation Accuracy in Mobile Sensing" paper (pdf)
in Proc. of International Conference on Mobile Computing, Applications, and Services (MobiCASE), October, 2009.
 
30. J. Ye and Q. Zhao
    
"Quickest Change Detection in Multiple On-Off Processes: Switching with Memory" paper (pdf),   slides (pdf)
in Proc. of Allerton Conference on Communications, Control, and Computing, September, 2009.
 
31. W. Ren, Q. Zhao, and A. Swami
    
"Connectivity of Cognitive Radio Networks: Proximity vs. Opportunity" paper (pdf),   journal version,   slides (pdf)
in Proc. of ACM MobiCom Workshop on Cognitive Radio Networks, September, 2009.
 
32. H. Liu, B. Krishnamachari, and Q. Zhao
    
"Negotiating Multichannel Sensing and Access In Cognitive Radio Wireless Networks" paper (pdf)
in Proc. of the 6th IEEE Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON) Workshops, June, 2009.
 
33. Q. Zhao and J. Ye
    
"Quickest Change Detection in Multiple On-Off Processes" paper (pdf),   slides (pdf)
in Proc. of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), April, 2009 (invited).
 
34. P. Tehrani and Q. Zhao
    
"Separation Principle for Opportunistic Spectrum Access in Unslotted Primary Systems" paper (pdf),   correction (pdf)
in Proc. of the 43rd Conference on Information, Science, and Systems (CISS), March, 2009.
 

2008

35. Q. Zhao and J. Ye
    
"When to Quit for A New Job: Quickest Detection of Spectrum Opportunities in Multiple Channels" paper (pdf),   slides (pdf)
in Proc. of IEEE Military Communication Conference (MILCOM), November, 2008.
 
36. K. Liu, X. Xiao, and Q. Zhao
    
"Opportunistic Spectrum Access in Self Similar primary Traffic" journal version (pdf)
in Proc. of IEEE Military Communication Conference (MILCOM), November, 2008.
 
37. H. Liu, L. Huang, B. Krishnamachari, Q. Zhao
    
"A Negotiation Game for Multichannel Access in Cognitive Radio Networks''
in Proc. of the Fourth International Wireless Internet Conference (WICON), November, 2008 (invited).
 
38. K. Liu and Q. Zhao
    
"Channel Probing for Opportunistic Access with Multi-channel Sensing'' paper (pdf),   journal version (pdf),   slides (pdf)
in Proc. of IEEE Asilomar Conference on Signals, Systems, and Computers, October, 2008.
 
39. K. Liu, Q. Zhao, and Y. Chen
    
"Distributed Sensing and Access in Cognitive Radio Networks'' paper (pdf)
in Proc. of 10th International Symposium on Spread Spectrum Techniques and Applications (ISSSTA), August, 2008 (invited).
 
40. K. Liu and Q. Zhao
    
"A Restless Bandit Formulation of Opportunistic Access: Indexablity and Index Policy'' paper (pdf),  journal version (pdf)
in Proc. of the 5th IEEE Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON) Workshops, June, 2008 (invited).
 
41. H. Liu, B. Krishnamachari, and Q. Zhao
    
"Cooperation and Learning in Multiuser Opportunistic Spectrum Access" paper (pdf)
in Proc. of IEEE International Conference on Communications (ICC) Workshops, May, 2008.
 
42. T. Javidi, B. Krishnamachari, Q. Zhao, and M. Liu
    
"Optimality of Myopic Sensing in Multi-Channel Opportunistic Access'' paper (pdf),   journal version (pdf)
in Proc. of IEEE International Conference on Communications (ICC), May, 2008.
 
43. K. Liu and Q. Zhao
    
"Link Throughput of Multi-Channel Opportunistic Access with Limited Sensing'' paper (pdf),   typo correction,   journal version (pdf),   slides (pdf)
in Proc. of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), March, 2008.
 
44. W. Ren, Q. Zhao and A. Swami
    
"Power Control in Spectrum Overlay Networks: How to Cross A Multi-Lane Highway?'' paper (pdf),  journal version (pdf),  slides (pdf)
in Proc. of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), March, 2008.
 
45. Q. Zhao and K. Liu
    
"Detecting, Tracking, and Exploiting Spectrum Opportunities in Unslotted Primary Systems'' paper (pdf),   slides (pdf)
in Proc. of IEEE Radio and Wireless Symposium (RWS), January, 2008.
 

2007

46. Y. Chen, Q. Zhao, and A. Swami
    
"Bursty Traffic in Energy-Constrained Opportunistic Spectrum Access'' paper (pdf),  journal version (pdf)
in Proc. of IEEE Global Communications Conference (Globecom), November, 2007.
 
47. Q. Zhao, W. Ren, and A. Swami
    
"Spectrum Opportunity Detection: How Good Is Listen-Before-Talk?'' paper (pdf),  journal version (pdf)
in Proc. of IEEE Asilomar Conference on Signals, Systems, and Computers, November, 2007 (invited).
 
48. T. Zhao and Q. Zhao
    
"Joint Design of Scheduling and Routing based on Connected Coverage for Optimal Sensor Network Lifetime," paper (pdf)
in Proc. of the SPIE Conference on Advanced Signal Processing Algorithms, Architectures, and Implementations , August, 2007 (invited).
 
49. Q. Zhao, B. Krishnamachari, and K. Liu
    
"Low-Complexity Approaches to Spectrum Opportunity Tracking," paper (pdf),   slides (pdf)
in Proc. of the 2nd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom) , August, 2007.
 
50. Y. Chen, Q. Zhao, and A. Swami
    
"Joint PHY-MAC Design for Opportunistic Spectrum Access with Multi-Channel Sensing," paper (pdf),   journal version (pdf),   slides (pdf file)
in Proc. of the 8th IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) , June, 2007.
 
51. Q. Zhao and B. Krishnamachari
    
"Structure and Optimality of Myopic Sensing for Opportunistic Spectrum Access" paper (pdf),   journal version (pdf)
in Proc. of IEEE International Conference on Communications (ICC) Workshops, June, 2007.
 
52. D.V. Djonin, Q. Zhao, and V. Krishnamurthy
    
"Optimality and Complexity of Opportunistic Spectrum Access: A Truncated Markov Decision Process Formulation," paper (pdf)
in Proc. of IEEE International Conference on Communications (ICC), June, 2007.
 
53. Q. Zhao and A. Swami
    
"A Survey of Dynamic Spectrum Access: Signal Processing and Networking Perspectives," paper (pdf),   slides (pdf file)
in Proc. of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP): special session on Signal Processing and Networking for Dynamic Spectrum Access, April, 2007.
 
54. Q. Zhao
    
"Spectrum Opportunity and Interference Constraint in Opportunistic Spectrum Access," paper (pdf)
in Proc. of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), April, 2007.
 
55. T. Zhao and Q. Zhao
    
"Coverage-Based Information Retrieval for Lifetime Maximization in Sensor Networks," paper (pdf)
in Proc. of the 41st Conference on Information, Science, and Systems (CISS), March, 2007.
 

2006

56. Y. Chen, Q. Zhao, and A. Swami
    
"Joint Design and Separation Principle for Opportunistic Spectrum Access," paper (pdf),   journal version (pdf)
in Proc. of IEEE Asilomar Conference on Signals, Systems, and Computers, November, 2006 ( First Place Winner of Student Paper Contest).
 
57. Y. Chen, Q. Zhao, and A. Swami
    
"Distributed Cognitive MAC for Energy-Constrained Opportunistic Spectrum Access," paper (pdf),   journal version (pdf)
in Proc. of IEEE Military Communication Conference (MILCOM), October, 2006 (invited).
 
58. Y. Chen, Q. Zhao, V. Krishnamurthy, and D. Djonin
    
"Transmission Scheduling for Sensor Network Lifetime Maximization: A Shortest Path Bandit Formulation," paper (pdf),   journal version (pdf)
in Proc. of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), May, 2006 ( Student Paper Contest Award ).
 
59. Q. Zhao, L. Tong, A. Swami, and Y. Chen
    
"Cross-Layer Design of Opportunistic Spectrum Access in the Presence of Sensing Error," paper (pdf),   journal version (pdf)
in Proc. of the 40th Conference on Information, Science, and Systems (CISS), March, 2006.
 

2005

60. Q. Zhao, L. Tong, and A. Swami
    
"Decentralized Cognitive MAC for Dynamic Spectrum Access," paper (pdf),   journal version (pdf)
in Proc. of the first IEEE Symposium on New Frontiers in Dynamic Spectrum Access Networks (DySPAN), November, 2005.
 
61. Q. Zhao, L. Tong, and A. Swami
    
"A Cross-Layer Approach to Cognitive MAC for Spectrum Agility," paper (pdf),   journal version (pdf)
in Proc. of IEEE Asilomar Conference on Signals, Systems, and Computers, November, 2005 (invited).
 
62. Y. Chen, C. Chuan, and Q. Zhao
    
"Sensor Placement for Maximizing Lifetime per Unit Cost in Wireless Sensor Networks," paper (pdf),   journal version (pdf)
in Proc. of IEEE Military Communication Conference (MILCOM), October, 2005.
 
63. Q. Zhao, L. Tong, and Y. Chen
    
"Energy-Aware Data-Centric MAC for Application-Specific Sensor Networks," pdf file
in Proc. of IEEE Workshop on Statistical Signal Processing, July, 2005 (invited).
 
64. Y. Chen and Q. Zhao
    
"Distributed Transmission Protocol for Lifetime Maximization in Sensor Network," paper (pdf),   journal version (pdf)
in Proc. of the 6th IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), June, 2005 (invited).
 
65. Y. Chen and Q. Zhao
    
"Maximizing the Lifetime of Sensor Network Using Local Information on Channel State and Residual Energy," paper (pdf) ,   journal version (pdf)
in Proc. of the 39th Conference on Information, Science, and Systems (CISS), March, 2005.
 
66. Q. Zhao
    
"On the Use of Channel State for Energy-Efficient Information Retrieval in Sensor Networks," paper (pdf) ,   journal version (pdf)
in Proc. of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), March, 2005.
 
67. Q. Zhao and L. Tong
    
"Energy-Efficient Adaptive Routing for Ad Hoc Networks with Time-Varying Heterogeneous Traffic," paper (pdf) ,   journal version (pdf)
in Proc. of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), March, 2005.
 

2000-2004

68. Q. Zhao and L. Tong
    
"A Connectionless Approach to Large-Scale Sensor Networks,"pdf file
in Proc. of IEEE Military Communication Conference (MILCOM), Nov., 2004.
 
69. P. Venkitasubramaniam, Q. Zhao, and L. Tong
    
"Sensor Network with Multiple Mobile Access Points,"pdf file
in Proc. of the 38th Conference on Information, Science, and Systems (CISS), March, 2004.
 
70. Q. Zhao and L. Tong
    
"Distributed Opportunistic Transmission for Wireless Sensor Networks,"pdf file
in Proc. of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), May, 2004.
 
71. Q. Zhao and L. Tong
    
"QoS Specific Medium Access Control for Wireless Sensor Networks with Fading,"pdf file
in Proc. of the Eighth International Workshop on Signal Processing for Space Communications, Sept., 2003, Italy.
 
72. Q. Zhao and L. Tong
    
"Quality-of-Service Specific Information Retrieval for Densely Deployed Sensor Networks,"pdf file
in Proc. of IEEE Military Communication Conference (MILCOM) , Oct., 2003, Boston, MA.
 
73. L. Tong, Q. Zhao, and S. Adireddy
    
"Sensor Networks with Mobile Agents,"pdf file
in Proc. of IEEE Military Communication Conference (MILCOM) , Oct., 2003, Boston, MA.
 
74. Q. Zhao and L. Tong
    
`` The Dynamic Queue Protocol for Spread Spectrum Random Access Networks,''
in Proc. of IEEE Military Communication Conference (MILCOM), Washington, DC, Oct., 2001.
 
75. Q. Zhao and L. Tong
    
`` A Dynamic Queue MAC Protocol for Random Access Channels with Multipacket Reception,''
in Proc. of the 34th Asilomar Conference on Signals, Systems, and Computers, Oct., 2000.
 
76. Q. Zhao and L. Tong
    
`` An Adaptive Multi-Queue Service Room Protocol for Wireless Networks with Multipacket Reception,''
in Proc. of the 28th Allerton Conference on Communications, Control, and Computing , Moticello, IL, Sept., 2000.
 

1996-1999

77. Q. Zhao and L. Tong
    
"Semi-blind Signal Separation for Collision Resolution in Wireless Ad-Hoc Networks,"
in Proc. of IEEE Military Communication Conference (MILCOM) , October, 1999.
 
78. Q. Zhao and L. Tong
    
"Semi-blind Collision Resolution in Random Access Wireless Networks,"
in Proc. of the 2nd IEEE Signal Processing Workshop on Signal Processing Advances in Wireless Communications (SPAWC), May, 1999.
 
79. Q. Zhao and L. Tong
    
"Decision Feedback Blind Symbol Estimation by Adaptive Least Squares Smoothing,"
in Proc. of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), March, 1999.
 
80. Q. Zhao and L. Tong
    
"Semi-Blind Equalization by Least Squares Smoothing,"
in Proc. of the 32nd Asilomar Conference on Signals, Systems, and Computers, November, 1998.
 
81. Q. Zhao and L. Tong
    
``Blind Channel Estimation by Least-Squares Smoothing for CDMA,''
in Proc. of the SPIE Conference on Advanced Signal Processing Algorithms, Architectures, and Implementations, July, 1998.
 
82. Q. Zhao and L. Tong
    
``Adaptive Least Squares Smoothing for Blind Channel Estimation and Tracking,''
in Proc. of the 9th IEEE Signal Processing Workshop on Statistical Signal and Array Processing, September, 1998.
 
83. Q. Zhao and L. Tong
    
``Fast Convergence Adaptive Blind Channel Estimation and Deconvolution,''
in Proc. of the 32nd Conference on Information, Science, and Systems (CISS), March, 1998.
 
84. L. Tong and Q. Zhao
    
``Joint Order Detection and Channel Estimation by Least Squares Smoothing,''
in Proc. of the 32nd Conference on Information Science and Systems (CISS), March, 1998.
 
85. L. Tong and Q. Zhao
    
``Blind Channel Estimation by Least Squares Smoothing,''
in Proc. of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), May, 1998.
 
86. J. Luo, Q. Zhao, and X. Ling
    
``A New Learning Algorithm for Blind Channel Identification,''
in Proc. of IEEE International Conference on Digital Signal Processing Applications, Perth, Australia, Nov., 1996.
 

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