PAPR reduction in CP-OFDM (5G) using hybrid technique

IF 0.6 Q3 ENGINEERING, MULTIDISCIPLINARY

Acta Polytechnica Pub Date : 2023-11-07 DOI:10.14311/ap.2023.63.0364

Azlan Yusof, A. Idris, Ezmin Abdullah

引用次数: 0

Abstract

The Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM) is a 5G multicarrier waveform that offers great data speeds and improvements in spectrum utilisation. The primary CP-OFDM’s weakness is its excessive peak-to-average power ratio (PAPR), which is a characteristic of all multicarrier modulation techniques. We study the application of a hybrid technique approach how to lower the peak to average power ratio (PAPR) in a CP-OFDM system. We also evaluated the outcomes of peak to average power ratio (PAPR) decrease in CP-OFDM, utilising a hybrid technique with Group Codeword Shift (GCS), Median Codeword Shift, Selective Codeword Shift (SCS), and Conventional CP-OFDM. When compared to the non-hybrid technique, the simulation results indicate that the hybrid approach is superior in reducing the peak PAPR by more than 65 percent.

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利用混合技术降低 CP-OFDM （5G）中的 PAPR

循环前缀正交频分复用（CP-OFDM）是一种 5G 多载波波形，可提供极快的数据传输速度并提高频谱利用率。CP-OFDM 的主要弱点是峰均功率比（PAPR）过高，这是所有多载波调制技术的一个特点。我们研究了如何在 CP-OFDM 系统中应用混合技术方法来降低峰均功率比（PAPR）。我们还评估了 CP-OFDM 中峰值与平均功率比（PAPR）降低的结果，利用了混合技术，包括分组码字移位（GCS）、中值码字移位、选择性码字移位（SCS）和传统 CP-OFDM。与非混合技术相比，仿真结果表明，混合方法在降低峰值 PAPR 方面更胜一筹，降幅超过 65%。

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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来源期刊

Acta Polytechnica ENGINEERING, MULTIDISCIPLINARY-

CiteScore

1.90

自引率

12.50%

发文量

审稿时长

24 weeks

期刊介绍： Acta Polytechnica is a scientific journal published by CTU in Prague. The main title, Acta Polytechnica, is accompanied by the subtitle Journal of Advanced Engineering, which defines the scope of the journal more precisely - Acta Polytechnica covers a wide spectrum of engineering topics, physics and mathematics. Our aim is to be a high-quality multi-disciplinary journal publishing the results of basic research and also applied research. We place emphasis on the quality of all published papers. The journal should also serve as a bridge between basic research in natural sciences and applied research in all technical disciplines. The innovative research results published by young researchers or by postdoctoral fellows, and also the high-quality papers by researchers from the international scientific community, reflect the good position of CTU in the World University Rankings. We hope that you will ﬁnd our journal interesting, and that it will serve as a valuable source of scientiﬁc information.