Turbo乘积码与空时分组码的结合研究

STBC combining with turbo product code

讨论了Turbo乘积码编码,研究了Turbo乘积码与空时分组码相结合的多发射天线单接收天线系统(MISO)在平坦瑞利衰落信道下的性能,这里Turbo乘积码作为外码提供编码增益,采用两个相同的扩展汉明码(64,57)构成;空时分组码作为内码提供分集增益,对于二根、三根和四根发射天线的系统空时分组码编码器的码率分别为1,1/2和1/2,空时分组码译码采用最大似然译码方式和理想信道估计.仿真结果表明,在空时分组码的基础上加入高效的信道编码方式,提高了系统编码增益,能满足高速移动环境下的高速无线数据通信性能需求.

The encoding of turbo product code (TPC) was discussed. Then multiple transmit and single receive antenna system (MISO systems) combing turbo product code with space time block code (STBC) in Rayleigh flat-fading channels obtained by STBC as an inner code. The STBC encoder with the code rate 1 was applied to two transmit antennas system. The STBC encoder with the code rate 1/2 was applied to three transmit antennas system and four transmit antennas system. The STBC decoder was used with maximum likelihood decoding and the ideal channel estimation. The simulation results show that the TPC-STBC systems improve coding gain and are able to satisfy the requirements of high rate data communication in high velocity mobility environment.