The filter bank multi-carrier (FBMC) technique is hoped to become a potential candidate for advanced wireless multiple intput multiple output (MIMO) systems as the fifth generation (5G) or the sixth generation (6G) owing to its advantages. In this paper, two combining designs of precoder and equalizer for MIMO FBMC offset quadrature amplitude modulation (OQAM) systems are investigated and proposed. These designs are developed basically on power allocation strategies such as the error balance algorithm (EBA) and water-pouring algorithm (WPA). The key idea is how to address bad sub-channels in which they are strengthened with the EBA whereas some really bad sub-channels are discarded with the WPA. The proposed designs are evaluated and compared to outstanding conventional designs based on zero forcing (ZF) and minimum mean square error (MMSE) algorithms via bit error rate (BER) and throughput issues. Simulation results show that the proposed designs can improve significantly the performance of downlink spatial multiplexing systems.

由于其优点，希望将滤波器组多载波（FBMC）技术作为第五代（5G）或第六代（6G）的先进无线多输入多输出（MIMO）系统的潜在候选者。本文研究并提出了用于MIMO FBMC偏移正交调幅（OQAM）系统的预编码器和均衡器的两种组合设计。这些设计基本上是根据功率分配策略开发的，例如误差平衡算法（EBA）和注水算法（WPA）。关键思想是如何通过EBA来解决不良子信道的问题，而使用EBA来加强这些不良子信道，而通过WPA丢弃一些真正不良的子信道。通过零误码率（BER）和吞吐量问题，对提出的设计进行了评估，并与基于零强迫（ZF）和最小均方误差（MMSE）算法的出色传统设计进行了比较。仿真结果表明，所提出的设计可以显着提高下行空间复用系统的性能。