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arXiv · 1508.07698

Rate-Compatible Polar Codes for Wireless Channels

Mostafa El-Khamy·Hsien-Ping Lin·Jungwon Lee·Hessam Mahdavifar·Inyup Kang
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Abstract

A design of rate-compatible polar codes suitable for HARQ communications is proposed in this paper. An important feature of the proposed design is that the puncturing order is chosen with low complexity on a base code of short length, which is then further polarized to the desired length. A practical rate-matching system that has the flexibility to choose any desired rate through puncturing or repetition while preserving the polarization is suggested. The proposed rate-matching system is combined with channel interleaving and a bit-mapping procedure that preserves the polarization of the rate-compatible polar code family over bit-interleaved coded modulation systems. Simulation results on AWGN and fast fading channels with different modulation orders show the robustness of the proposed rate-compatible polar code in both Chase combining and incremental redundancy HARQ communications.

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Mostafa El-Khamy, Hsien-Ping Lin, Jungwon Lee, Hessam Mahdavifar, Inyup Kang. 2015-08-31. Rate-Compatible Polar Codes for Wireless Channels. https://arxiv.org/abs/1508.07698

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