Analytical SER Performance Bound of M-QAM MIMO System With ZF-SIC Receiver

The Multiple-Input-Multiple-Output (MIMO) technique, combined with Multi-level Quadrature Amplitude Modulation (MQAM), has been considered a potential scheme for high data rate transmission in next generation mobile communication systems. In this paper, the Symbol Error Rate (SER) of M-QAM MIMO system based on spatial multiplexing is analyzed and closed-form results are given under rich scattering Rayleigh fading channel for Zero-Forcing (ZF) receiver and Zero-Forcing Perfect Successive Interference Cancellation (ZF-PSIC) receiver. Furthermore, these two precise analytical SER expressions are taken as the upper bound and lower bound of Zero-Forcing Successive Interference Cancellation (ZF-SIC) receiver without optimal ordering.