中文摘要：

构建了基于译码转发中继信道的对角正交设计极化空时分组码（STPBC），该种码可以通过极化天线进行满码率发射和接收．然后设计了码率为1、发射天线数为2和4的码字矩阵，最后与传统对角正交、传统准正交和极化准正交这3种无中继空时分组码（STBC）分别进行了仿真对比．结果表明：2个发射天线和1个接收天线情况下，当BER=10^-3时，BPSK调制下STPBC的性能比无中继传统对角正交情况有3．5dB的增益，QPSK调制下有3dB的增益；4个发射天线和1个接收天线情况下，当BER=10^-3时，BPSK调制下比上述3种情况分别有6．0，2．7和-1．5dB的增益，QPSK调制下分别有5．5，2．5和-2．5dB的增益；与无中继极化准正交STBC相比，在SNR较低的情况下所提分组码具有较好的性能．

英文摘要：

A new kind of diagonal orthogonal designs space time polarization block codes （STPBC） for decode-and-forward relay channel is constructed. These codes can transmit and receive with full transmission rate through dual-polarized antennas. The STPBC with two and four transmit antennas are designed firstly. Then it is compared with the space time block codes （STBC） without relay channel including the traditional diagonal orthogonal, the traditional quasi-orthogonal and the polarized quasi- orthogonal. Simulation results show that the STPBC can provide a gain of 3.5 dB/3 dB compared with the traditional diagonal orthogonal at the given of BER （bit error rate） 10-3 for BPSK/QPSK （binary phase shift keying/quaternary phase shift keying） in the condition of two transmit antennas and one re- ceive antenna. In same case except for four transmit antennas instead of two, the gain is 6.0 dB/5.5 dB for the traditional diagonal orthogonal, 2. 7 dB/2. 5 dB for the traditional quasi-orthogonal and - 1.5 dB/-2. 5 dB for the polarized quasi-orthogonal, respectively. The performance of the STPBC is also better than that of the polarized quasi-orthogonal STBC in low SNR.