Design for the asymmetric turbo codes

Authors:
Hanxin Wang;Shaoping Chen;Chengyi Xiong;Cuitao Zhu
Affiliations:
Department of Electronics and Information Engineering, South-Central University for Nationalities, Wuhan, China;Department of Electronics and Information Engineering, South-Central University for Nationalities, Wuhan, China;Department of Electronics and Information Engineering, South-Central University for Nationalities, Wuhan, China;Department of Electronics and Information Engineering, South-Central University for Nationalities, Wuhan, China
Venue:
ICACT'10 Proceedings of the 12th international conference on Advanced communication technology
Year:
2010

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Abstract

Two types of asymmetric turbo codes are proposed, i.e., the parallel concatenated turbo codes that use the non-identical component encoder with different constraint lengths and mixed types of generator polynomials. The proposed schemes can optimize the HER performance of both water-fall region at low SNR and error-floor region at high SNR. The simulation results show the presented asymmetric turbo codes can achieve better performance than the conventional symmetric system over the entire ranges of SNR with a reduced decoding computational complexity.