调频鉴别器解调数字信号的误码率

D. Schilling, E. Hoffman, E. Nelson
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引用次数: 35

摘要

描述了利用调频鉴别器低通滤波器检测器检测二进制移频键控(FSK)信号的误码率的计算。给出了一个使用交替标记空间序列的例子,并与使用匹配滤波器得到的结果进行了比较。结果表明,在某些区域,调频鉴别器低通滤波器检测器的误差率与匹配滤波器检测器相当,而在其他区域,匹配滤波器的误差率明显优于鉴别器。描述了一种纠错装置,当与鉴别器结合使用时,降低了鉴别器检测器的错误率,使其更接近匹配的滤波器检测器。实验结果验证了理论的正确性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Error Rates for Digital Signals Demodulated by an FM Discriminator
The calculation of the error rate resulting from the detection of binary frequency shift keyed (FSK) signals using an FM discriminator low-pass filter detector is described. An example is given using an alternating mark space sequence and the results compared with those obtained using a matched filter. The results indicate that in certain regions the FM discriminator low-pass filter detector yields error rates comparable to the matched filter detector, while in other regions the matched filter significantly out performs the discriminator. An error correction device is described, which when used in conjunction with the discriminator, reduces the error rate of the discriminator detector so that it more closely approaches the matched filter detector. Experimental results are presented to verify the theory.
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