节能的M-QAM信号星座以减少OFDM系统中的PMEPR

2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2005-09-11 DOI:10.1109/PIMRC.2005.1651618

M. Vaezi, A. Mirzaee, S. M. Safavi

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引用次数: 4

摘要

本文研究正交频分复用(OFDM)系统中峰均包络功率比(PMEPR)问题。首先，我们提出了一种节能的8-QAM信号星座，并将其扩展到高阶QAM信号星座;然后利用星座扩展的思想部署这些星座来降低OFDM系统中的PMEPR。与现有的正交星座等星座相比，所有这些星座的平均功率都更小，因此适用于OFDM和其他离散多音(DMT)技术中的PMEPR降低

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Power-efficient M-QAM signal constellations to reduce the PMEPR in OFDM systems

In this paper, we consider the problem of peak to mean envelope power ratio (PMEPR) in orthogonal frequency division multiplexing (OFDM) systems. First, we propose a power-efficient 8-QAM signal constellation and extend it to higher order QAM signal constellations as well; and then we deploy these constellations to reduce the PMEPR in OFDM systems using the constellation expanding idea. All these constellations have less average power compared to the existing constellations like quadrature constellation and therefore are appropriate for PMEPR reduction in OFDM and other discrete multi-tone (DMT) techniques

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2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications

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