LT码度分布改进及在认知无线电链路保持中的应用

doi:10.11959/j.issn.1000-436x.2018062

Abstract

Abstract:

The degree distribution has a great influence on the performance of Luby transform (LT) codes.Based on the link maintain model of cognitive radio system，the novel degree distribution of LT codes was obtained by using the THOA (two-layer hierarchical optimization algorithm) to combine the IPD (improved poisson distribution) which achieved high decoding success rate with low overhead and the robust soliton distribution (RSD) which achieved high decoding success rate with high overhead.Simulation results show that the proposed method with application to link maintenance in cognitive radio system can improve the reliability and efficiency of secondary communication.

Key words: LT codes, cognitive radio, THOA, ripple size, goodput

CLC Number:

TN911.22

Benshun YI,Weiqing YAO. Degree distribution optimization for LT codes and its application in link maintenance of cognitive radio[J]. Journal on Communications, 2018, 39(4): 76-83.

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References 14

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Degree distribution optimization for LT codes and its application in link maintenance of cognitive radio

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