文章基本信息

标题：Performance Comparison of Three Algorithms Applied to UM2000 Signal Demodulation
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作者：Zhichao Qiao ; Fuping Wang
期刊名称：Journal of Signal and Information Processing
印刷版ISSN：2159-4465
电子版ISSN：2159-4481
出版年度：2013
卷号：4
期号：3B
页码：58-61
DOI：10.4236/jsip.2013.43B010
出版社：Scientific Research Publishing
摘要：UM2000 signal is a type of multi-audio frequency-modulated signal which is widely used for railway blocking. Principles of three typical demodulating algorithms are presented in details in this paper. Bit error rates of the three methods at different SNRs are achieved by Monte Carlo simulation experiments. Among the three algorithms, the quadrature demodulation has the best performance at the real working environment. However, the three methods have the same problem of phase hopping when noise is too strong.
关键词：UM2000 Signal; Differential Frequency Detection; Zero-Crossing Detection; Quadrature Demodulation