Welcome to Xiaojun’s web page!

I am a Ph.D. student at WINLAB (wireless information network laboratory), Rutgers University, New Brunswick/ Piscataway, New Jersey, working with Prof. Predrag Spasojevic.  

My research interests are in the general areas of wireless communication, information and coding theory. Currently, I am working on physical layer security for wireless communication and also towards the understanding of cognition, competition, and cooperation (CO₃) in wireless networks. 

Before joining WINLAB, I worked with Prof. Yingbo Hua at University of California, Riverside, CA.

Recent Publications:

X. Tang, R. Liu, P. Spasojevic, and H. V. Poor, The Gaussian Wiretap Channel With a Helping Interferer, to appear in Proc. of IEEE International Symposium on Information Theory (ISIT 2008), Toronto, Ontario, Canada, Jul. 6-11, 2008.

X. Tang, R. Liu, P. Spasojevic, and H. V. Poor, Interference-Assisted Secret Communication, to appear in Proc. of IEEE Information Theory Workshop (ITW 2008), Porto, Portugal, May 5-9, 2008.

X. Tang, R. Liu, P. Spasojevic, and H. V. Poor, Coding Schemes for Confidential Communications, in Proc. of Workshop on Information Theory and Applications (ITA 2008), UCSD, La Jolla, CA, Jan. 27 - Feb. 1, 2008.

X. Tang, R. Liu, P. Spasojevic, and H. V. Poor, Multiple Access Channels with Generalized Feedback and Confidential Messages, in Proc. of IEEE Information Theory Workshop on Frontiers in Coding Theory (ITW 2007), Lake Tahoe, CA, Sep. 2-6, 2007.

X. Tang, R. Liu, P. Spasojevic, and H. V. Poor, On the Throughput of Secure Hybrid-ARQ Protocols for Gaussian Block-Fading Channels, submitted to IEEE Transactions on Information Theory, Dec. 2007.

X. Tang, R. Liu, and P. Spasojevic, An Achievable Secrecy Throughput of Hybrid-ARQ Protocols for Block Fading Channels, in Proc. of IEEE International Symposium on Information Theory (ISIT 2007), Nice, France, Jun. 24-29, 2007.  

X. Tang, R. Liu, and P. Spasojevic, On the Achievable Secrecy Throughput of Block Fading Channels with No Channel State Information at the Transmitter, in Proc. of the 41st Annual Conference on Information Sciences and Systems (CISS 2007), Baltimore, MD, Mar. 14-16, 2007. 

X. Tang and Y. Hua, Optimal Design of Non-regenerative MIMO Wireless Relays, IEEE Transactions on Wireless Communications,  vol. 6, no. 4, pp. 1398- 1407, Apr. 2007.

X. Tang and Y. Hua, Optimal Waveform Design for MIMO Relaying, in Proc. of the 6th IEEE International Workshop on Signal Processing Advances for Wireless Communications (SPAWC 2005),  New York, NY, Jun. 5-8, 2005.

X. Tang and Y. Hua, Capacity of Ultra-Wideband Power-Constrained Ad-hoc Networks, IEEE Transactions on Information Theory,  vol. 54, no. 2, pp. 916-920, Feb. 2008.