On the Nonlinear Companding Transform for Reduction in PAPR of MCM Signals
On the Nonlinear Companding Transform for Reduction in PAPR of MCM Signals
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DOI：
10.1109/twc.2007.05802
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发表时间：
2007-06
影响因子：
10.4
通讯作者：
Tao Jiang;Weidong Xiang;P. Richardson;Daiming Qu;Guangxi Zhu
中科院分区：
文献类型：
--
作者：
Tao Jiang;Weidong Xiang;P. Richardson;Daiming Qu;Guangxi Zhu
本文提出了降低多载波调制（MCM）信号峰均功率比的非线性扩压变换设计准则，使原MCM信号转换成理想的分布。例如，提出了一些新颖的非线性压缩变换，将原始MCM信号的幅度或功率变换为均匀分布，可以在不增加复杂性和带宽的情况下有效降低不同调制格式和子载波大小的PAPR。计算机仿真结果表明，所提出的方案可以显著提高MCM系统的性能，包括误码率和PAPR降低。
In this paper, we provide the design criteria of the nonlinear companding transforms for reduction in peak-to-average power ratio (PAPR) of multi-carrier modulation (MCM) signals, which can enable the original MCM signals to be transformed into the desirable distribution. As examples, some novel nonlinear companding transforms have been proposed to transform the amplitude or power of the original MCM signals into uniform distribution, which can effectively reduce the PAPR for different modulation formats and subcarrier sizes without any complexity increase and bandwidth expansion. It has been shown by computer simulations that the proposed schemes can significantly improve the performance of MCM systems including bit-error-rate and PAPR reduction.