Decoder-in-the-Loop: Genetic Optimization- Based LDPC Code Design
Decoder-in-the-Loop: Genetic Optimization- Based LDPC Code Design
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解码器在环:基于遗传优化的 LDPC 码设计
DOI:
10.1109/access.2019.2942999
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发表时间:
2019
期刊:
影响因子:
3.9
通讯作者:
Stephan ten Brink
中科院分区:
文献类型:
--
作者:
Ahmed Elkelesh;Moustafa Ebada;Sebastian Cammerer;Laurent Schmalen;Stephan ten Brink
LDPC code design tools typically rely on asymptotic code behavior and are affected by an unavoidable performance degradation due to model imperfections in the short length regime. We propose an LDPC code design scheme based on an evolutionary algorithm, the Genetic Algorithm (GenAlg), implementing a “decoder-in-the-loop” concept. It inherently takes into consideration the channel, code length and the number of iterations while optimizing the error-rate of the actual decoder hardware architecture. We construct short length LDPC codes (i.e., the parity-check matrix) with error-rate performance comparable to, or even outperforming that of well-designed standardized short length LDPC codes over both AWGN and Rayleigh fading channels. Our proposed algorithm can be used to design LDPC codes with special graph structures (e.g., accumulator-based codes) to facilitate the encoding step, or to satisfy any other practical requirement. Moreover, GenAlg can be used to design LDPC codes with the aim of reducing decoding latency and complexity, leading to coding gains of up to 0.325 dB and 0.8 dB at BLER of 10-5for both AWGN and Rayleigh fading channels, respectively, when compared to state-of-the-art short LDPC codes. Also, we analyze what can be learned from the resulting codes and, as such, the GenAlg particularly highlights design paradigms of short length LDPC codes (e.g., codes with degree-1 variable nodes obtain very good results).
影响因子:
8.3
作者:
Elkelesh, Ahmed;Ebada, Moustafa;ten Brink, Stephan
通讯作者:
ten Brink, Stephan
DOI:
10.1109/isit.2018.8437581
发表时间:
2017-12
期刊:
2018 IEEE International Symposium on Information Theory (ISIT)
影响因子:
--
作者:
Sebastian Cammerer;Moustafa Ebada;Ahmed Elkelesh;S. Brink
通讯作者:
Sebastian Cammerer;Moustafa Ebada;Ahmed Elkelesh;S. Brink
DOI:
--
发表时间:
2010
期刊:
International Symposium on Turbo Codes and Iterative Information Processing
影响因子:
--
作者:
Mayur Punekar;F. Kienle;N. Wehn;A. Tanatmis;Stefan Ruzika;H. Hamacher
通讯作者:
H. Hamacher