Application of MIMO enhancement technique based on spread spectrum method

摘要

In order to combat multipath interference in Multiple-Input-Multiple-Output (MIMO) system, enhancement technique with spread spectrum method is proposed in this paper. The bit error rate (BER) performance of MIMO system under multipath channel will deteriorate seriously, and the merit of spread spectrum technique is its potential to reduce interference, so we proposed the method that combines spread spectrum communication technique with MIMO system to obtain a better BER performance. Extensive simulations have been conducted and we designed the MIMO system based on conventional pseudo-random (PN) sequence and complete complementary sequence (CC-S), respectively. The results of simulations illustrate obviously that utilizing spread spectrum method as an enhancement technique to eliminate multipath fading interference in MIMO system is a feasible and an effective implementation way.