Method for reducing complexity of continuous phase modulation receiver
A phase modulation and phase modulation signal technology, applied in the field of communication, can solve the problems of complex CPM signal processing, large receiver storage capacity, high computational complexity, etc., to achieve the effect of ensuring realizability, reducing calculation amount, and reducing complexity
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[0047] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0048] The method for reducing the complexity of the continuous phase modulation receiver of the present invention is divided into two stages, the former stage is to carry out orthogonal processing on the transmitted signal to reduce the number of matched filters at the front end of the receiver, and the latter stage is passed in the sequence detection stage. State fusion reduces the number of states for Viterbi decoding and uses decision feedback decoding.
[0049] Reduce the number of matched filters
[0050] The reduction of the number of matched filters in the previous stage is mainly implemented in two parts. First, it can be known from formulas (2) and (5) that CPM signals with the same correlation state but different phase states can be linearly represented by the same signal, so the same matched filter can be used to process these CPM signals...
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