Investigation of LDPC codes with interleaving for 5G wireless networks

IF 1.8 4区 计算机科学 Q3 TELECOMMUNICATIONS
Pooja Pathak, Richa Bhatia
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引用次数: 0

Abstract

Low-density parity check (LDPC) codes are employed for data channels due to their capability of achieving high throughput and good performance. However, the belief propagation decoding algorithm for LDPC codes has high computational complexity. The min-sum approach reduces decoding complexity at the expense of performance loss. In this paper, we investigate the performance of LDPC codes using interleaving. The codes are investigated using BPSK modulation for short to moderate message lengths for various numbers of iterations using the min-sum decoding algorithm. The paper aims to improve the block error rate (BLER) and bit error rate (BER) for short to moderate block lengths required for massive machine-type communications (mMTC) supporting numerous IoT devices with short data packets, and ultra-reliable low-latency communications (URLLC) for delay-sensitive services of 5G. By incorporating interleaving alongside min-sum decoding, the performance is not only improved but also reaches a level of comparability with established algorithms such as the belief propagation algorithm (BPA) and the sum-product algorithm (SPA). LDPC coding with interleaving and subsequent min-sum decoding is a promising approach for improving the performance metrics of codes for short to moderate block length without incurring a significant increase in decoding complexity.

Abstract Image

针对 5G 无线网络的交织 LDPC 码研究
低密度奇偶校验(LDPC)码具有吞吐量大、性能好的特点,因此被用于数据信道。然而,LDPC 码的信念传播解码算法具有很高的计算复杂度。最小和方法以性能损失为代价降低了解码复杂度。本文研究了使用交织的 LDPC 码的性能。我们使用 BPSK 调制对这些编码进行了研究,并使用最小和解码算法对不同迭代次数的短至中等信息长度进行了研究。本文旨在提高中短信息块长度的块误码率(BLER)和比特误码率(BER),以满足支持大量物联网设备的短数据包大规模机器型通信(mMTC)和 5G 时延敏感服务的超可靠低延迟通信(URLLC)的要求。通过将交错与最小和解码相结合,不仅提高了性能,而且达到了与信念传播算法(BPA)和和积算法(SPA)等成熟算法相当的水平。采用交错和后续最小和解码的 LDPC 编码是一种很有前途的方法,可在不显著增加解码复杂度的情况下,改善中短码块长度编码的性能指标。
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来源期刊
Annals of Telecommunications
Annals of Telecommunications 工程技术-电信学
CiteScore
5.20
自引率
5.30%
发文量
37
审稿时长
4.5 months
期刊介绍: Annals of Telecommunications is an international journal publishing original peer-reviewed papers in the field of telecommunications. It covers all the essential branches of modern telecommunications, ranging from digital communications to communication networks and the internet, to software, protocols and services, uses and economics. This large spectrum of topics accounts for the rapid convergence through telecommunications of the underlying technologies in computers, communications, content management towards the emergence of the information and knowledge society. As a consequence, the Journal provides a medium for exchanging research results and technological achievements accomplished by the European and international scientific community from academia and industry.
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