Publications By Topic

Biometrics

Lifeng Lai, Siu-Wai Ho and H. Vincent Poor, "A Theoretic Framework for Biometric Security Systems,"
International Conference on Biometrics (ICB), June 2009.

Lifeng Lai, Siu-Wai Ho and H. Vincent Poor, "Privacy-Security Tradeoffs in Biometric Security Systems,"
IEEE Transactions on Information Theory, 2008. Under Revision.

Lifeng Lai, Siu-Wai Ho and H. Vincent Poor, "Privacy-Security Tradeoffs in Biometric Security Systems," 
Annual Allerton Conference on Communication, Control, and Computing (Allerton), Monticello, IL, Sept. 2008.

Wireless Network Security

Lifeng Lai and H. Vincent Poor, "A Unified Framework for Key Agreement over Wireless Fading Channels,"
IEEE Information Theory Workshop (ITW), Oct. 2009. To appear.

Vannet Aggarwal, Lifeng Lai, A. Robert Calderbank and H. Vincent Poor, "Wiretap channel II with an active eavesdropper,"
IEEE International Symposium on Information Theory (ISIT), June/July 2009.

O. O. Koyluoglu, Hesham El Gamal, Lifeng Lai and H. Vincent Poor, "Interference Alignment for Secrecy,"
IEEE Transactions on Information Theory, 2008. Under revision.

Lifeng Lai, Hesham El Gamal and H. Vincent Poor, "Authentication over Noisy Channels,"
IEEE Transactions on Information Theory, vol. 55, no. 2, pp. 906-916, Feb. 2009.

Lifeng Lai, Hesham El Gamal and H. Vincent Poor, "The Wiretap Channel with Feedback: Encryption over the Channel,"
IEEE Transactions on Information Theory, vol. 54, no. 11, pp. 5059 - 5067, Nov. 2008.

Praveen. K. Gopala, Lifeng Lai and Hesham El Gamal, "On the Secrecy Capacity of Fading Channels,"
IEEE Transactions on Information Theory, vol. 54, no. 10, pp. 4687 - 4698, Oct. 2008.

Lifeng Lai and Hesham El Gamal, "The Relay-Eavesdropper Channel: Cooperation for Secrecy,"
IEEE Transactions on Information Theory, vol. 54, no. 9, pp. 4005 - 4019, Sept. 2008.

O. O. Koyluoglu, Hesham El Gamal, Lifeng Lai and H. Vincent Poor, " On the Secure Degrees of Freedom in the $K$-User
Gaussian Interference Channel," IEEE International Symposium on Information Theory (ISIT), Toronto, Canada, July 2008.

Lifeng Lai, Hesham El Gamal and H. Vincent Poor, "Secrecy Capacity of the Wiretap Channel with Noisy Feedback", 
Annual Allerton Conference on Communication, Control, and Computing (Allerton), Monticello, IL, Sept. 2007.

Lifeng Lai, Hesham El Gamal and H. Vincent Poor, "Authentication over Noisy Channels", 
Annual Allerton Conference on Communication, Control, and Computing (Allerton), Monticello, IL, Sept. 2007.

Lifeng Lai and Hesham El Gamal, "Cooperative Secrecy: The Relay-Eavesdropper Channel", 
IEEE International Symposium on Information Theory (ISIT), Nice, France, June 2007.

Praveen K. Gopala, Lifeng Lai and Hesham El Gamal, "On the Secrecy Capacity of Fading Channels",
IEEE International Symposium on Information Theory (ISIT), Nice, France, June 2007.

Lifeng Lai and Hesham El Gamal, "Cooperation for Secure Communication: The Relay Wiretap Channel",
IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Honolulu, Hawaii, Apr. 2007.

Lifeng Lai, Praveen K. Gopala  and Hesham El Gamal, "Secure Communications over Wireless Channels"(Invited paper);, 
ITA 2007, UCSD Information Theory and Application, Jan. 2007.

Sequential Analysis and Its Applications

Lifeng Lai, H. Vincent Poor and Yan Xin, "Quickest Search over Multiple Sequences,"
Annals of Statistics, 2009. Submitted.

Hai Jiang, Lifeng Lai, Rongfei Fan and H. Vincent Poor,"Optimal Selection of Channel Sensing Order in 
Cognitive Radios," IEEE Transactions on Wireless Communications, vol. 8, no. 1, pp. 297-307, Jan. 2009.

Lifeng Lai, Yijia Fan and H. Vincent Poor,"Quickest Detection in Cognitive Radio: A Sequential Change Detection 
Framework," IEEE Global Communications Conferences(Globecom), Nov. 30- Dec. 4, 2008.

Hai Jiang, Lifeng Lai, Rongfei Fan, and H. Vincent Poor, "Cognitive radio: how to maximally utilize spectrum
opportunities in sequential sensing," IEEE Global Communications Conferences(Globecom), Nov. 30- Dec. 4, 2008.

Lifeng Lai, H. Jiang and H. Vincent Poor,"Medium Access in Cognitive Radio Networks: A Competitive Multi-armed
Bandit Framework,", Asilomar Conference on Signals, Systems, and Computers (Asilomar), Pacific Grove, CA, Oct. 2008.

Lifeng Lai, Hesham El Gamal, Hai Jiang and H. Vincent Poor, "Optimal Medium Access Control in Cognitive Radios: A
Sequential Design Approach", IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP),
pp. 2073 - 2076, Apr. 2008.

Lifeng Lai, Hesham El Gamal, Hai Jiang and H. Vincent Poor, "Optimal Medium Access Protocols for Cognitive Radio
Networks", Intl. Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (Wiopt), Mar. 2008.

Cooperative Communications

Yijia Fan, Lifeng Lai, Elza Erkip and H. Vincent Poor, "Rateless coding for MIMO fading channels: Performance limit and code construction,"
IEEE Transactions on Wireless Communications, 2009. Submitted.

Yijia Fan, Lifeng Lai, Elza Erkip and H. Vincent Poor,"Rateless Coding for MIMO Block Fading Channels,"
IEEE International Symposium on Information Theory (ISIT), Toronto, Canada, July 2008.

Lifeng Lai and Hesham El Gamal,"The Water-filling Game in fading Multiple Access Channel,"
IEEE Transactions on Information Theory, vol. 54, no. 5, pp. 2110 - 2122, May, 2008.

Lifeng Lai and Hesham El Gamal, " On Cooperation in Energy Efficient Wireless Networks: the Role of Altruistic Nodes,"
IEEE Transactions on Wireless Communications, vol. 7, no. 5, pp. 1868 - 1878, May 2008.

Lifeng Lai, Ke Liu and Hesham El Gamal, "The Three Node Wireless Network: Achievable Rates and Cooperation
Strategies," IEEE Transactions on Information Theory, vol. 52, no. 3, pp. 805 - 828, Mar. 2006.

Lifeng Lai and Hesham El Gamal, "Fading Multiple Access Channels: A Game Theoretic Perspective", 
IEEE International Symposium on Information Theory (ISIT), Seattle, WA, July 9 - July 15, 2006.

Lifeng Lai, Ke Liu and Hesham El Gamal, "On the Achievable Rates and Cooperation Strategies of Three-Node
Wireless Network", The Forty-Third Annual Allerton Conference on Communication, Control, and Computing (Allerton),
Monticello, IL, Sep. 28 - Sep. 30, 2005.

Lifeng Lai, Ke Liu and Hesham El Gamal, "On the Achievable Rate of Three-Node Wireless Networks", 
IEEE WIRELESSCOM 2005,Maui, Hawaii, USA, June 13-16, 2005.(Invited paper)

Zhaoyang Zhang, Lifeng Lai, "A Practical Slotted Quasi-Synchronous CDMA Access System for LEO Micro-Satellite
Short Message Transmission," IEEE ICC 2003, Anchorage, Alaska, USA, May 11 - 15, 2003.