用限制差分检测改善跳频CPFSK在部分频带干扰下的分集

MILCOM 92 Conference Record Pub Date : 1992-10-11 DOI:10.1109/MILCOM.1992.244093

H.M. Kwon, L. Miller, J. Lee

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摘要

分析了在部分频带噪声干扰信道上传输慢跳频连续相移频键控(CPFSK)分集波形时，在接收机前加带通限制器的差分检波器产生的误差概率，并与不加带通限制器的系统性能进行了比较。原则上，每个比特在L个不同的跳数上重复，对于所分析的跳频/CPFSK系统，这些重复被组合起来产生软决策。研究结果表明，在最坏情况下，带限制器的差分检波器能够实现提高误码率的分集增益，而不带限制器的差分检波器则不能实现。通过比较L=2和L=1时的误差概率，得到了这一结果

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Diversity improvement of frequency-hopped CPFSK in partial-band jamming by limiter-differential detection

The error probability achieved by a differential detector with a bandpass limiter preceding the receiver is analyzed for a slow-frequency-hopped continuous-phase frequency-shift keying (CPFSK) diversity waveform transmitted over a partial-band noise jamming channel, and is compared to the system's performance without the bandpass limiter. In principle, each bit is repeated on L different hops and, for the frequency-hopped/CPFSK system analyzed, these repetitions are combined to yield a soft decision. The main result of the work is that a diversity gain for error rate improvement in worst-case partial-band jamming is realized for the different detector preceded by a limiter, but not for the differential detector without a limiter. This result is shown by considering the error probability for L=2 in comparison with that for L=1.<>

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MILCOM 92 Conference Record

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