RS编码空间调制系统

RS CODE FOR SPATIAL MODULATION

针对多输入多输出系统(MIMO)中信道相关性对系统性能影响严重以及TC-SM系统频谱效率低等问题,提出一种RS编码与空间调制相结合的RS-SM系统方案。在发送端,首先对数据进行编码、交织、SM映射后发送出去,在接收端,通过采用最大似然(ML)译码算法进行检测,检测结果送入RS译码器,利用RS码的纠错性能,降低信道相关性对系统性能的影响。同时,RS-SM系统克服了TC-SM系统频谱效率低的缺点,使系统具有更高的编码效率和更多的码率选择。理论分析与实验仿真结果表明:RS-SM系统能够有效提高系统的性能和频谱效率。

In multiple-input multiple-output （MIMO） system, channel correlation has significant impact on the performance of system; the spectrum efficiency of TC-SM system is low. Aiming at these problems, we present a RS-SM system scheme, in which the RS encoding is com- bined with spatial modulation （SM）. At sender, first the data are encoded, interleaved and SM mapped and then transmitted. At receiver, the maximum likelihood （ML） decoding algorithm is used for detecting, and the detection resuh is inputted to RS decoder, the error correction property of RS is utilised to reduce the effect of channel correlation on system performance. Meanwhile, RS-SM system overcomes the disadvan- tage of low spectrum efficiency in TC-SM, and makes the system have higher encoding efficiency and more choices in bit rates. Theoretical anal- ysis and experimental simulation result show that the RS-SM system can effectively enhance the system performance and spectrum efficiency.