Iterative pseudo-code capture apparatus and method based on information optimization
A capture device and iterative technology, which is applied in the field of fast capture of long pseudocode sequences, can solve the problems of restricting the performance of iterative capture methods and the inability to obtain initial information of iterations, etc.
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[0071] The present invention is described in more detail below in conjunction with accompanying drawing example:
[0072] to combine image 3 , the structural composition of the iterative pseudocode acquisition device based on information optimization includes A / D sampling module 1, carrier demodulation module 2, maximum likelihood timing estimation module 3, multi-sampling arithmetic mean synthesis module 4, iterative message transfer module 5 and capture decision Module 6. After the acquisition process starts, the sampled signal is sent to the maximum likelihood timing estimator after carrier demodulation, and the maximum likelihood estimator generates a timing estimate of the chip timing error, and forms the opening of the multi-sampling arithmetic mean structure according to the timing estimation result Control signal; when the multi-sampling arithmetic mean structure receives the start signal, it starts to work and forms M chip observations to form the data of an observa...
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