使用基于中心相位序列矩阵的 PTS 方法分析 OTFS 中的 PAPR

Q3 Physics and Astronomy
Arun Kumar , Himanshu Sharma , Nishant Gaur , Aziz Nanthaamornphong
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引用次数: 0

摘要

正交时频空间(OTFS)是一种多载波调制技术,用于无线通信中的高速数据传输。在 OTFS 系统中,许多子载波用于发送调制符号。这使得 OTFS 信号具有较高的峰均功率比(PAPR)。我们提出了一种基于中心相序矩阵(CPSM)的部分发送序列(PTS)方法,以降低高 PAPR。此外,建议的方法还能有效搜索相位旋转因子的最佳组合,从而降低计算复杂度。我们研究了误码率 (BER)、功率谱密度 (PSD) 和 PAPR 的结果,以验证 OTFS 系统中的竞争变换。与非正交多址接入(NOMA)、滤波器组多载波(FBMC)、通用滤波器组多载波(UFMC)和正交频分复用(OFDM)一起,我们还比较了 OTFS 的 PAPR、误码率和 PSD 性能。数据显示,建议的 PTS + CPSM 比当前的 PTS 更有效地降低了 PAPR。此外,通过增加子块的数量(s = 2 和 4),建议的 PTS + CPSM 可以获得更好的 PAPR 率。实验结果表明,建议的方法在保持误码率和 PSD 性能的同时,以最小的计算复杂度大幅降低了 PAPR。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
PAPR analysis in OTFS using the centre phase sequence matrix based PTS method

Orthogonal time–frequency space (OTFS) is a multicarrier modulation technique for high-speed data transfer in wireless communications. In an OTFS system, many subcarriers are used to send the modulated symbols. This makes OTFS signals have a high peak-to-average power ratio (PAPR). We suggest a partial transmit sequence (PTS) approach based on the Centre Phase Sequence Matrix (CPSM) to lower the high PAPR. Furthermore, the suggested method effectively searches for the best possible combination of phase rotation factors to reduce computing complexity. We examine the outcomes regarding bit error rate (BER), power spectral density (PSD), and PAPR to validate the competing transforms in the OTFS system. Along with non-orthogonal multiple access (NOMA), filter bank multi-carrier (FBMC), universal filter multi-carrier (UFMC), and orthogonal frequency division multiplexing (OFDM), the PAPR, BER, and PSD performance of OTFS were also compared. According to the data, the suggested PTS + CPSM reduces PAPR more effectively than the current PTS. It is also mentioned that by increasing the number of sub-blocks (s = 2 and 4), the suggested PTS + CPSM can achieve an even better PAPR rate. According to the experimental results, the suggested approach has dramatically decreased the PAPR while maintaining the BER and PSD performance with the least amount of computational complexity.

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来源期刊
Results in Optics
Results in Optics Physics and Astronomy-Atomic and Molecular Physics, and Optics
CiteScore
2.50
自引率
0.00%
发文量
115
审稿时长
71 days
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