时变信道中16-QAM OFDM低密度校验码的评估

2021 IEEE International Conference on Communication, Networks and Satellite (COMNETSAT) Pub Date : 2021-07-17 DOI:10.1109/COMNETSAT53002.2021.9530811

A. Y. Kuti, A. E. Abdelkareem

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引用次数: 3

摘要

在无线网络中，时变信道中的多径干扰是影响数据有效传输的一个重要问题。采用前向纠错(FEC)编码，如低密度奇偶校验(LDPC)编码，可以提高误码率(BER)效率。LDPC具有接近香农极限的效率，近年来受到了广泛的关注。本文对时变信道下LDPC编码正交频分复用(OFDM)通信方案的效率进行了评价。然后研究了基于LDPC码的带宽高效编码调制系统，该系统具有低实现复杂度和高误码率的特点。通过仿真研究了调制和编码方案对LDPC码性能的影响。结果表明，该装置可以显著提高无线信道的效率，同时降低码率，提高系统整体性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Evaluation of Low-density parity-check code with 16-QAM OFDM in a time-varying channel

In wireless networks, multipath interference in a time-varying channel is a significant and major challenge to effective data transmission. Bit error rate (BER) efficiency is improved using Forward Error Correction (FEC) coding, such as Low-Density Parity-Check (LDPC) coding. LDPC, which can accomplish near Shannon limit efficiency and has recently gained considerable attention because of these properties. The efficiency of an LDPC coded orthogonal frequency division multiplexing (OFDM) communication scheme for time-varying channels is evaluated in this paper. Then we study the bandwidth-efficient coded modulation system based on LDPC codes that have low implementation complexity and high BER efficiency. Simulation is used to investigate the effects of modulation and coding schemes on the performance of the LDPC code.The results show that the device can significantly boost the efficiency of wireless channels while lowering the code rate and improving overall system performance.

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来源期刊

2021 IEEE International Conference on Communication, Networks and Satellite (COMNETSAT)

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