Abstract
Describes the establishment of maximum likelihood estimation model and victor than the realization of the search path. At the same time according to the data block transmission mode in the software and the characteristics of victor than path search, research a kind of software demodulation is implemented based on data redundancy, make full use of the parallel processing computer system performance, improve the operation efficiency of the algorithm. And the algorithm error rate as an index, compares the software likelihood estimation algorithm with the traditional frequency demodulation performance, results show that the BER 10-4 when algorithm can get the demodulation gain of about 3 dB.
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