In this work, we propose the reference signal-aided channel estimation approach which is a crucial requirement to address the realistic performance of spatial media-based modulation (SMBM) systems where the digitally controllable radio frequency mirrors are deployed on the multiple transmit antennas. Accordingly, least squares and linear minimum mean square error-based channel estimation schemes are proposed for MBM-based systems for the first time in the literature where former studies mainly assume either perfect channel state information or an error model on channel coefficients. In addition, corresponding symbol detection performance is studied. To measure the efficiency of the proposed channel estimation approaches, the theoretical upper bounds on average bit error rate are derived and shown to be well overlapped with the computer simulations for the medium and high signal-to-noise ratio regions. This study is important due to the implementation of channel estimation as well as the theoretical derivation of detection bounds for SMBM communication systems.

在这项工作中，我们提出了参考信号辅助信道估计方法，这是解决基于空间媒体调制 (SMBM) 系统的现实性能的关键要求，其中数字可控射频反射镜部署在多个发射天线上。因此，在文献中首次为基于 MBM 的系统提出了基于最小二乘法和线性最小均方误差的信道估计方案，其中以前的研究主要假设完美的信道状态信息或信道系数的误差模型。此外，还研究了相应的符号检测性能。为了测量所提出的信道估计方法的效率，推导出平均误码率的理论上限，并显示出与中等和高信噪比区域的计算机模拟很好地重叠。由于信道估计的实施以及 SMBM 通信系统检测界限的理论推导，这项研究很重要。