Iterative Differential Unitary Space-Frequency Decoding for Multiband-OFDM UWB Communication Systems
Recently, noncoherent UWB radios have generated increasing interest among researchers due to the advantage of not requiring channel state information (CSI) at both transmitter and receiver. However, the trade-off is a penalty of approximately 3 dB in the required SNR compare to the coherent case. In order to overcome the gap, in this paper,we propose a differential encoding and decoding scheme for multiband UWB systems. The proposed scheme employs the parallel concatenation of two differential unitary space-frequency encoders at the transmitter and performs a simple soft decision iterative decoding at the receiver. Simulation results show that the proposed scheme can outperform the conventional differential and coherent detection at high SNR with few number of iterations.
Xiufeng Jin Guangguo Bi Haiyong Xiao
National Mobile Communication Research laboratory.Southeast University, Nanjing, China
国际会议
2006年IEEE信息理论国际会议(Proceedings of 2006 IEEE Information Theory Workshop ITW06)
成都
英文
512-516
2006-10-22（万方平台首次上网日期，不代表论文的发表时间）