Performance and EXIT analysis of parallel concatenated space time trellis codes

查看全文 作　　者：Yang [1]Haifen;Li [1]Guangjun;Guo [1]Zhiyong;Xiong [2]Yong 机构地区：[1]Dept. of Communication gc Information Engineering,Univ. of Electronic Science and Technology of China, Chengdu 010054, P. R. China;[2]Shanghai Research Center for Wireless Communlcations,Shanghai 200050, P. R. China 出　　处：《Journal of Systems Engineering and Electronics》索引2009年第20卷第6期,共5页 基　　金：supported by Shanghai Municipal Government and Nokia 摘　　要：Space time trellis coding (STTC) techniques have been proposed to achieve both diversity and coding gains in multiple input multiple output (MIMO) fading channels. But with more transmit antennas STTCs suffer from the design dificulty and complexity increasing. This paper proposes a scheme, named parallel concatenated space time trellis codes (PC-STTC), to achieve the tradeoff between the performances and complexity of STTCs for a large number of transmit antennas. Simulation results and complexity comparison are provided to demonstrate the performance and superiority of the proposed scheme over conventional schemes in fast fading channels in low signal-to-noise ratio (SNR) regions. And an EXIT (extrinsic information transform) chart is given to analyze the iterative convergence of the proposed scheme. It shows that PC-STTC has better iterative convergence in low SNR regions. 关 键 词：空时格码 并行级联 性能 快衰落信道 码分 多输入多输出 网格编码 发射天线