改进的多天线OFDM系统及其性能分析

一种改进的多天线OFDM系统及其性能分析

内容简介：提出一种改进的OFDM系统，把N点FFT分为n组，同时把空间分集应用于该系统中，利用正交设计理论安排发送数据符号，在接收端采用适当的合并方式最大限度地获得信号功率.通过分析与仿真计算可以看到，多天线分集可以显著地改善OFDM系统的性能.

Abstract：An improved OFDM system is proposed: N-points-FFT is divided inton groups. The symbol is arranged according to orthogonal design theory at transmitter, and the multi-antenna can achieve the maximum signal power by appropriate combination method at receiver. The performance is improved greatly by analysis and numerical simulation.

作者：佟学俭, 纪红, 乐光新,

关键词：频分复用, 分集技术, 快速傅里叶变换,