级联LDPC的空时分组码性能研究

Performance studies on STBS with LDPC

阐述了空时分组码的编译码算法并进行性能分析,就其编码能提供分集增益但不能提供编码增益的特点,给出空时分组码级联LDPC(low density parity check code,低密度奇偶校验码)的系统模型。最后利用Matlab对级联LDPC的空时分组码进行仿真,结果表明:级联LDPC码的空时分组码能有效提高编码性能。

This paper gives introduction of the encoding/decoding theory of space time block coding（STBC ）and analyzes the performance ,STBC can provide diversity gain, but can not provide coding gain ,then gives the concatenating model of the LDPC and STBC.Finally, the performance of LDPC-STBC is gived through computer simulation, the simulation results show that this method can improve the coding performance.