英语翻译本文研究的是无线通信接收分集技术.由于无线通信的条件相当恶劣,会造成信号失真和引入各种干扰.为了充分利用传输中的

英语翻译
本文研究的是无线通信接收分集技术.由于无线通信的条件相当恶劣,会造成信号失真和引入各种干扰.为了充分利用传输中的多径信号能量,以改善传输可靠性,接收分集技术是常用的克服多径衰落的无线通信技术之一.接收分集技术简单,容易实现,但能够明显提高多径衰落信道下的传输可靠性.
无线通信接收分集技术包括：空间分集（包括天线分集、波束分集、极化分集等）、频率分集、时间分集和波束分集等.分集接收的合并算法包括：选择性合并（SC）、等增益合并（EGC）和最大比合并（MRC）算法等.
本文对分集技术的有关理论进行分析总结,并对相应算法的性能进行仿真分析.仿真结果表明：分集接收技术能够有效平滑多径衰落造成的SNR波动；三种合并算法中最大比合并分集性能最佳,等增益合并次之,选择性合并最差.

This research is receiving diversity wireless communication.Due to the condition of wireless communication is bad,can cause the distortion and introduce all kinds of jamming.In order to make full use of the multipath signal transmission of energy,in order to improve the reliability and receive transmission diversity is commonly overcome multipath fading of the wireless communication technology.Receiving diversity technology is simple,easy to achieve,but can obviously improve the multipath fading channel of transmission and reliability.
Wireless communications technology including receiving diversity,spatial diversity (including antenna beam diversity,diversity,polarization diversity,etc.),frequency diversity,time diversity and beam diversity,etc.Diversity of merger algorithm including receiving consolidation (SC),selectivity,etc) and EGC (gain mergers are warning) algorithm (etc.
Based on relevant theories of diversity,and analysis of performance of the algorithm simulation analysis.Simulation results show that the technique can effectively smooth diversity receiving multipath fading of SNR,Three kinds of merger algorithm are the best performance,such as diversity gain merger,selective merge the worst.