RS与STBC级联编码的可见光MIMO系统

针对采用空时分组编码(Space-Time Block Coding, STBC)的多输入多输出(Multiple-Input Multiple-Output, MIMO)可见光通信(Visible Light Communications, VLC)系统复杂度和天线数难以平衡的问题，为了在一定天线数的条件下获得更多的编码增益，结合正交设计的思路，设计了适合于多阵列协同信息传输的STBC编解码方案，并将RS(Reed-Solomon)码作为外码，STBC编码作为内码，设计了RS-STBC串行级联编码的VLC-MIMO通信系统。仿真和分析表明，该级联系统在天线数较小的条件下能够弥补STBC编码在编码增益上的损失，系统的误码率性能得到了进一步提升，且系统具有较高的可靠性。

A visible light MIMO system with RS and STBC cascaded coding

In order to obtain more coding gain under the condition of a certain number of antennas,the complexity of multiple-input multiple-output(MIMO) visible light communication(VLC) system with space-time block coding(STBC) is difficult to balance with the number of antennas.In this paper,an STBC coding and decoding scheme suitable for multi-array collaborative information transmission is designed by combining the orthogonal design idea.In addition,the Reed-Solomon(RS) code is taken as the outer code and the STBC code as the inner code.A VLC-MIMO communication system with RS-STBC serial cascade code is designed.Simulation and analysis shows that the cascade system can make up for the loss of STBC coding gain when the number of antennas is small,the bit error rate performance of the system is further improved,and the system has a high reliability.