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- Title
非理想同步下BCH码盲识别的改进算法.
- Authors
吴 刚; 张邦宁; 郭道省
- Abstract
In order to realize blind reeognition of BCH eodes in the ease of unknown channel error probability and imperfect synchronization, an improved blind recognition algorithm was proposed. Firstly, estimated channel error probability by combining modulation scheme and SNR estimation algorithm. Then, deduced an optimal decision threshold for deciding whether a minimal polynomial under the testing field index was a factor of the generator polynomial or not according to the estimated channel error probability, and completed the recognition of the code length. At last, recognized the real synchronization deviation by comparing the number that the row polynomials were divisible by the minimal polynomial under each tested synchronization deviation, and completed the recognition of the generator polynomial by finding all the minimal polynomials that satisfied the decision threshold. Simulation results demonstrate that the proposed algorithm can recognize the BCH codes efficiently in the case of unknown channel error probability and imperfect synchronization, and the recognition performance outperforms the previous algorithms.
- Publication
Journal of Signal Processing, 2016, Vol 32, Issue 6, p746
- ISSN
1003-0530
- Publication type
Academic Journal
- DOI
10.16798/j.issn.1003-0530.2016.06.015