By year

Xiang Duan, Xiyan Ma, Zhisheng Niu, Junli Zheng, Analysis of Wireless Transmission Efficiency and Its Application: Efficiency-Based Adaptive Coding, Proc. IEEE 14th Int. Symposium Personal, Indoor and Mobile Radio Commun. (PIMRC'2003), Sept. 2003, Beijing, China.
Yi Wu, Zhisheng Niu, Junli Zheng, Tamio Saito, A Delay NAK Retransmission Scheme Based on Channel State for Mobile Multimedia Communications, Proc. of IEEE Vehicular Technology Conference (VTC2003-Spring), April 2003.
Zhisheng Niu, Song Liu, Dawei Huang, Jianping Shu, Yang Li, Modeling and performance analysis of Voice Message Service in mobile communication systems, 2002 China Wireless Congress (Invited paper), http://delson.org/cwc02/, 15-17th, October 2002, Hangzhou, China.