Cheng tiao was born in 1976 and now is a Ph. D. student in National Key Lab of Communication, University of Electronic Science and Technology of China. His research interests include intelligent signal processing, OFDM and iterative decoding.E-mail: Dr.chenghao@163.com Guo Wei was born in 1964. He is a professor and doctoral tutor with UESTC. His research interests include OFDM, MIMO, Turbo codes, LDPC codes, Ad Hoc and UWB wireless communication. Jiang Yi was born in 1978. He received his M.S. Degree from UESTC in 2004, and is now working as a communication engineer.