Acquisition method and device for evaluating threshold value of perforation pattern performance

Abstract

The invention discloses an acquisition method and a device for evaluating a threshold value of perforation pattern performance. The method comprises the following steps of acquiring a perforation pattern used when encoding information bits according to an expansion matrix of a basic matrix, wherein the expansion matrix is obtained according to the quasi-cyclic basic matrix with low density and anodd-even check code; obtaining a perforation factor and a non perforation factor according to the perforation pattern; obtaining a first mutual information value according to a set signal noise ratio; obtaining a fourth mutual information value according to a conversion matrix, the perforation factor, the non perforation factor and the first mutual information value of the basic matrix; and obtaining the threshold value used for evaluating the perforation pattern performance according to the fourth mutual information value. The invention can enhance the working efficiency and is suitable for perforation pattern performance evaluation of perforations with arbitrary amount and perforation positions.

Description

technical field

[0001] The invention relates to mobile communication technology, in particular to a method and device for acquiring a threshold value for evaluating the performance of a perforated pattern. Background technique

[0002] Low Density Parity Check (Low Density Parity Check, LDPC) codes have unique advantages in the field of channel coding and decoding, and Hybrid Automatic Repeat Request (HARQ) technology can obtain higher spectral efficiency. LDPC codes usually use a belief propagation algorithm, which is an iterative decoding algorithm. Puncture the original LDPC image in the decoding process (for the quasi-cyclic LDPC code, the original image can be obtained by transforming its basis matrix), which can realize the effective combination of LDPC technology and HARQ technology. In order to improve the system performance, it is necessary to obtain the punching pattern with the best performance. At present, the method of simulation is usually used to evaluate the...

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