【摘要】 简要介绍了六端口结直接将射频调制信号下变频至基带进行解调的工作原理。鉴于六端口直接变频接收机众多的优点。预计它将有广阔的应用领域,人们正在试图将它与多种通信技术相结合。当信道处于深度衰落时接收中将发生差错,通常可以采用分集接收的方法予以改善。但是在新型的六端口接收机中,能否应用分集接收技术还无人讨论过。正是探讨了将一部分分集接收技术应用于这种接收机的可行性,以及相应的接收机结构。最后,仿真研究了采用分集技术的六端口接收机接收BPSK信号的接收性能。结果和理论相符,验证了该文所述观点的正确性。更多还原

【Abstract】 This paper briefly presents the operating principles of six - port directly converting RF modulation signals down to base band for demodulating. Considering so many advantages of six-port receivers, it will have wide application field and people are trying to combine it with many communication technologies. The received signal is likely to be wrong when it is communicated in the deep fading channel. This can be improved by using diversity techniques. But it hasn’ t been discussed that whether a six - port receiver can use diversity techniques. This paper discusses the probability of applying some diversity techniques to six - port receivers, and the configuration of corresponding receiver. Finally, the simulation results of the diversity six - port receiver for demodulating BPSK signal are studied. The method proves to be accurate, as the results are consistent with theoretical value.更多还原