用于降低多载波无线通信系统 PAPR 的新型混合编码-部分传输序列方法

IF 0.8 4区 综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES Proceedings of the National Academy of Sciences, India Section A: Physical Sciences Pub Date : 2023-12-18 DOI:10.1007/s40010-023-00866-4
S. Sathish Kumar, V. J. Arulkarthick, Arvind Chakrapani, G. Sasikala
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引用次数: 0

摘要

现代宽带和数据通信系统主要依靠正交频分复用(OFDM)原理在无线系统和设备之间进行有效的高速数据传输。但是,基本的 OFDM 方案具有较大的峰均功率比(PAPR)值,会降低误码率(BER)性能并增加带外辐射,从而严重影响整个系统的性能。本文提出了一种基于预编码器的部分发送序列(P-PTS)方法,其中对 OFDM 信号进行预编码,以减少带外辐射并保持误码率性能,而 PTS 方案则用于降低 PAPR 值。在通过加性白高斯噪声(AWGN)信道和瑞利信道向 OFDM 接收机部分传输 1024 个子载波的 16 QAM 调制 OFDM 信号时,对 P-PTS 的有效性进行了验证。仿真分析表明,与原始 OFDM 信号相比,PAPR 降低了近 50%,而误码率性能却没有降低。
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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A New Hybrid Precoding-Partial Transmit Sequence Method for PAPR Reduction in Multicarrier Wireless Communication Systems

Modern broadband and data communication systems strongly rely on the principles of orthogonal frequency division multiplexing (OFDM) for effective high speed data transfer between wireless systems and devices. But the underlying OFDM scheme has large peak to average power ratio (PAPR) value associated with it which can severely affect the overall system’s performance by degrading the bit error rate (BER) performance and increasing the out of band radiation. This article proposes a precoder-based partial transmit sequence (P-PTS) method in which the OFDM signal is precoded in order to reduce the out of band radiation and maintain the BER performance, while the PTS scheme is used to reduce the PAPR value. The effectiveness of P-PTS is validated for a 16 QAM modulated OFDM signal with 1024 subcarriers when transmitted over additive white Gaussian Noise (AWGN) channel and Rayleigh channel to the OFDM receiver section. The simulation analysis ensures that PAPR reduction is achieved by nearly 50% when compared to the original OFDM signal without degrading the BER performance.

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来源期刊
CiteScore
2.60
自引率
0.00%
发文量
37
审稿时长
>12 weeks
期刊介绍: To promote research in all the branches of Science & Technology; and disseminate the knowledge and advancements in Science & Technology
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