Joint iterative carrier synchronization and demodulation method of SCCPM system
A carrier synchronization and joint iteration technology, applied in transmission systems, digital transmission systems, modulated carrier systems, etc., can solve problems such as systems that cannot track carrier frequency offset, achieve the effect of reducing sensitivity and improving tracking range
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[0047] The present invention will be further described below in conjunction with the drawings and embodiments. The present invention includes but is not limited to the following embodiments.
[0048] The invention can be applied in the fields of telemetry communication, satellite communication, military communication, etc., by using the second-order PLL structure to realize carrier synchronization, and by means of the iterative demodulation algorithm in the SCCPM system to realize data demodulation and ensure the reliability of communication.
[0049] The idea of the method of the present invention is: first use the carrier synchronization initialization module to obtain the initial carrier estimation information and CPM bit logarithmic input probability for iterative, and then use the joint iterative carrier synchronization and demodulation module to perform carrier tracking and iterative demodulation to achieve accuracy The carrier synchronization and reliable signal demodulatio...
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