A Hybrid Precoded-Companding Scheme for PAPR Reduction in OFDM systems

IF 1.2 4区综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES

National Academy Science Letters Pub Date : 2023-10-06 DOI:10.1007/s40009-023-01354-4

V. J. Arulkarthick, K. Srihari, C. Arvind, M. A. Mukunthan, R. Sundar

引用次数: 0

Abstract

This letter proposes a hybrid precoded-companding scheme (HPCS) in which the orthogonal frequency-division multiplexing (OFDM) signal is initially precoded using the Zadoff–Chu sequence, and the intermediate signal is sine companded to minimize the peak-to-average-power-ratio (PAPR) value of the OFDM signal. It is evident from the simulation results that for OFDM signal with 512 and 1024 sub carriers, the PAPR value is reduced by 64.38 and 51.13%, respectively, when compared with the QPSK modulated OFDM signal. Also the bit error rate (BER) performance at the receiver is improved by 5.61 and 4.66 dB when compared with the original OFDM signal.

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用于降低 OFDM 系统 PAPR 的混合编码压缩方案

本文提出了一种混合预编码-压缩方案（HPCS），其中使用 Zadoff-Chu 序列对正交频分复用（OFDM）信号进行初始预编码，并对中间信号进行正弦压缩，以最大限度地降低 OFDM 信号的峰均功率比（PAPR）值。仿真结果表明，与 QPSK 调制的 OFDM 信号相比，512 和 1024 子载波的 OFDM 信号的 PAPR 值分别降低了 64.38% 和 51.13%。与原始 OFDM 信号相比，接收器的误码率 (BER) 性能也分别提高了 5.61 和 4.66 dB。

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

National Academy Science Letters 综合性期刊-综合性期刊

CiteScore

2.20

自引率

0.00%

发文量

审稿时长

12 months

期刊介绍： The National Academy Science Letters is published by the National Academy of Sciences, India, since 1978. The publication of this unique journal was started with a view to give quick and wide publicity to the innovations in all fields of science