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跳频通信可以通过载频在宽频带内的跳变来躲避干扰,但是在实际系统中不可避免地会受到人为的干扰,从而造成跳频通信系统性能的下降。部分频带干扰便是常用的一种方式。针对这种干扰,采用 RS码作为前向纠错码( FEC)的技术方案,通过理论分析和计算,说明只要合理选择 RS码的参数,就能有效地改善系统的误码性能。最后给出了 DSP芯片实现 RS译码器的方法。
Frequency hopping communication can avoid interference by carrier frequency hopping in a wide frequency band, but it is inevitably interfered by man-made system in actual systems, resulting in the decline of the performance of frequency hopping communication system. Part of the band interference is commonly used as a way. Aiming at this kind of interference, RS code is adopted as the technical solution of forward error correction code (FEC). Theoretical analysis and calculation show that as long as the parameters of RS code are reasonably selected, the error performance of the system can be effectively improved. Finally, a method of realizing RS decoder by DSP chip is given.