【摘要】 针对目前散射通信中传统的空间、频率等分集方式的局限性,提出了一种新的分集方式———基于信道认知的空间分集自适应选频传输技术,即散射通信设备能够根据各个空间分集支路快衰落的实时认知结果,自适应选择衰落最小的频率作为最佳工作频率传输信息,从而有效地平滑信道的深衰落。理论仿真和信道模拟测试结果证实了方案的有效性及可行性。更多还原

【Abstract】 Because of the limitation of space and frequency diversity in troposcatter communication,a new scheme about adaptive frequency selection technology based on space diversity is presented in the paper,which enables troposcatter communication equipments transmit / receive signals with the optimal frequency based on the results of channel recognition.Validity and feasibility of the scheme are proved by theoretic analysis and testing on wireless channel emulator.更多还原