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Latency reduced method for modified successive cancellation decoding of polar codes

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3 Author(s)
Huang, Z.L. ; Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China ; Diao, C.J. ; Chen, M.

A latency reduced method is proposed based on the modified successive cancellation (MSC) decoder for decoding polar codes. In the MSC decoder, it was shown that latencies for both the rate-zero and the rate-one nodes can be reduced. By redistributing the information bits, the proposed method can obtain a good rate-zero and rate-one nodes distribution, in which decoding latency can be further reduced under the MSC decoder. Simulation results show that the new polar code (obtained by the proposed method) achieves 8.5% latency reduction with neglected error performance loss compared with the original polar code. Furthermore, it is easy to adjust the trade-off between the error performance and decoding latency by the proposed method.

Published in:

Electronics Letters  (Volume:48 ,  Issue: 23 )