Simplified Fast List PAC Decoder for Broadcasting Services in 6G: Algorithm and Implementation

IF 4.8 1区 计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Jingxin Dai;Hang Yin;Yansong Lv;Yuhuan Wang;Yin Xu;Rui Lv
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引用次数: 0

Abstract

In the 6G network, integrating broadcasting and mobile networks will significantly improve the transmission capability. Considering the excellent error-correction performance, polarized-adjusted convolutional (PAC) codes are promising for ensuring reliable data transmission in 6G broadcasting services. However, the inherent high decoding latency of PAC codes poses challenges for seamless switching between broadcasting and mobile services. In this paper, we propose a simplified fast list (SFL) PAC decoder, which jointly exploits the node thresholds and adaptive path-pruning technology to reduce the decoding latency while maintaining high reliability. Firstly, we present a novel path expansion rule based on the node thresholds to avoid unnecessary computations. Secondly, the introduction of the adaptive path-pruning technology efficiently reduces the number of sorting operations. Moreover, we implement the proposed decoder on general purpose processors (GPPs) by software. Simulation results show that the proposed SFL decoding algorithm significantly reduces the decoding latency by up to 75.18% compared to the state-of-the-art (SOTA) work with no noticeable degradation in error-correction performance. Software implementation of the proposed decoder achieves an 18.80% improvement in throughput performance over the SOTA PAC software decoder.
用于6G广播业务的简化快速列表PAC解码器:算法与实现
在6G网络中,广播和移动网络的融合将显著提高传输能力。考虑到良好的纠错性能,极化调整卷积码(PAC)有望在6G广播业务中确保可靠的数据传输。然而,PAC码固有的高解码延迟给广播和移动业务之间的无缝切换带来了挑战。本文提出了一种简化的快速列表(SFL) PAC解码器,该解码器结合了节点阈值和自适应路径剪剪技术,在保持高可靠性的同时减少了解码延迟。首先,提出了一种基于节点阈值的路径扩展规则,避免了不必要的计算。其次,引入自适应路径修剪技术,有效地减少了排序操作的数量。此外,我们还通过软件在通用处理器(gpp)上实现了所提出的解码器。仿真结果表明,与现有的SOTA译码算法相比,SFL译码算法的译码延迟降低了75.18%,且纠错性能没有明显下降。该解码器的软件实现比SOTA PAC软件解码器的吞吐量性能提高了18.80%。
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来源期刊
IEEE Transactions on Broadcasting
IEEE Transactions on Broadcasting 工程技术-电信学
CiteScore
9.40
自引率
31.10%
发文量
79
审稿时长
6-12 weeks
期刊介绍: The Society’s Field of Interest is “Devices, equipment, techniques and systems related to broadcast technology, including the production, distribution, transmission, and propagation aspects.” In addition to this formal FOI statement, which is used to provide guidance to the Publications Committee in the selection of content, the AdCom has further resolved that “broadcast systems includes all aspects of transmission, propagation, and reception.”
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