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阐述采用正交空时编码的发射分集以及采用最大比合并的接收分集的基本原理.通过仿真比较两种分集方案在改善正交频分复用无线局域网吞吐量性能上的不同效果.理论分析和仿真结果表明,两种分集方案都能较大提高正交频分复用无线局域网的吞吐量,并且接收分集的性能要优于发射分集.
The basic principles of transmit diversity using Orthogonal Space-Time Coding and receiver diversity with maximum ratio combining are described, and the different effects of the two diversity schemes on improving throughput of Orthogonal Frequency Division Multiplexing (WDM) wireless LANs are compared by simulation. Theoretical analysis and The simulation results show that both diversity schemes can greatly improve the Orthogonal Frequency Division Multiplexing wireless LAN throughput, and receive diversity performance is better than transmit diversity.