一种结合PTS和SLM的方法，在OFDM系统中插入假信号以降低PAPR

2021 RIVF International Conference on Computing and Communication Technologies (RIVF) Pub Date : 2014-12-01 DOI:10.1109/ICCCT2.2014.7066735

T. Sravanti, N. Vasantha

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引用次数: 6

摘要

提出了一种新的选择性映射(SLM)、部分发射序列(PTS)和虚拟信号插入(DSI)相结合的方法来降低正交频分调制(OFDM)系统中的峰值平均功率比(PAPR)和带外干扰(OBI)。当PAPR系数较高时，OFDM的效率会降低，而安装HPA(高功率放大器)的成本会增加。为了尽量减少这个因素，已经做了很多研究。该方法通过将IFFT(快速反傅立叶变换)运算次数减少到一半来降低计算复杂度，结果表明PAPR有效降低0.6 - 1.4 dB。仿真结果表明，与传统方法和现有方法相比，该方法的OBI降低了3.2 ~ 4 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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A combined PTS & SLM approach with dummy signal insertion for PAPR reduction in OFDM systems

A novel combined approach of SLM (Selective Mapping), PTS (Partial Transmit Sequence) and DSI (Dummy Signal Insertion) is proposed to diminish PAPR (Peak to Average Power Ratio) and OBI (Out of Band Interference) in OFDM (Orthogonal Frequency Division Modulation) systems. The efficiency of OFDM decreases while the cost of installing HPA (High Power Amplifier) increases when the PAPR factor is high. A lot of research has been done to minimize this factor. The proposed method reduces the computational complexity by minimizing the number of IFFT (Inverse Fast Fourier Transform) operation to a half and the results show an effective decrement of PAPR by 0.6 - 1.4 dB. It also proved from the simulation results that it has 3.2 - 4 dB lower OBI when compared against the conventional and existing methods.

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2021 RIVF International Conference on Computing and Communication Technologies (RIVF)

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