A Hybrid ARQ Scheme Based on Polar Codes
Kai Chen, Kai Niu, and Jiaru Lin
TL;DR
This paper introduces a hybrid ARQ scheme utilizing rate-compatible polar codes, achieving comparable performance to turbo and LDPC codes with low complexity, and operating close to channel capacity.
Contribution
The paper proposes a novel HARQ scheme based on rate-compatible polar codes constructed via puncturing and repetition, enhancing performance and simplicity.
Findings
Performs as well as turbo and LDPC-based schemes
Operates 1.0-1.5dB from channel capacity
Uses low-complexity successive cancellation decoding
Abstract
A hybrid automatic repeat request (HARQ) scheme based on a novel class of rate-compatible polar (\mbox{RCP}) codes are proposed. The RCP codes are constructed by performing punctures and repetitions on the conventional polar codes. Simulation results over binary-input additive white Gaussian noise channels (BAWGNCs) show that, using a low-complexity successive cancellation (SC) decoder, the proposed HARQ scheme performs as well as the existing schemes based on turbo codes and low-density parity-check (LDPC) codes. The proposed transmission scheme is only about 1.0-1.5dB away from the channel capacity with the information block length of 1024 bits.
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