摘要
This paper considers the design of a low-complexity and high-performance precoder for multiple-input multiple-output(MIMO)systems.The precoder is designed by combining both nonlinear and non-iterative processing strategies.The proposed nonlin-ear precoding techniques employ a nonlinear constellation precoding technique based on maximum distance sepa-rable codes at the transmitter.We propose to reduce the computational complexity in iterative-based precoding algorithms by using less complex non-iterative singular value decomposition-based joint precoder and decoder pair design.The maximum likelihood detection for the lin-ear MIMO channel is considered.The simulation results showed that the proposed nonlinear and non-iterative precoding schemes outperform the conventional linear MIMO precoder design,even when a reduced-complexity suboptimal strategy is adopted,considering the bit error rate performance.
