A Low Latency SCAN-Flip Polar Decoder for 5G Vehicular Communication
A Low Latency SCAN-Flip Polar Decoder for 5G Vehicular Communication
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用于 5G 车辆通信的低延迟 SCAN-Flip Polar 解码器
DOI:
10.1007/978-3-030-14757-0_12
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发表时间:
2018-11
期刊:
影响因子:
--
通讯作者:
Zuocheng Xing
中科院分区:
文献类型:
--
作者:
Yu Wang;Lirui Chen;Shikai Qiu;Li Huang;Zuocheng Xing
Polar codes are widely considered as one of the most promising channel codes for future wireless communication. However, at short or moderate block lengths, their error-correction performance under traditional successive cancellation (SC) decoding is inferior to other modern channel codes, while under list decoding outperforms at the cost of high complexity and long latency. Successive cancellation flip (SCF) decoding is shown having competitive performance compared to that of list decoding but suffers from a long decoding latency. In this work, we propose the SCAN-Flip decoding algorithm by introducing the flipping idea into soft cancellation (SCAN) decoding. The proposed algorithm improves the error-correction performance of soft cancellation decoding and accelerates the convergence of iterative calculation, leading to lower execution-time. Besides, we also propose a new path metric to improve the performance of our SCAN-Flip decoder further. Simulation results show that the proposed decoder has a much smaller average number of iterations than that of SCF at equivalent frame error rate. At equivalent max number of iterations, the error-correction performance of SCAN-Flip outperforms SC-Flip by up to 0.25 dB at bit error rate of \(10^{-4}\).
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DOI:
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发表时间:
2016-12
期刊:
2016 IEEE Global Communications Conference (GLOBECOM)
影响因子:
--
作者:
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发表时间:
2017-12
期刊:
GLOBECOM 2017 - 2017 IEEE Global Communications Conference
影响因子:
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影响因子:
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