Power savings analysis of peak-to-average power ratio reduction in OFDM

被引：56
|
作者：
Baxley, RJ [1 ]
Zhou, GT [1 ]
机构：
[1] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA
来源：
IEEE TRANSACTIONS ON CONSUMER ELECTRONICS | 2004年 / 50卷 / 03期
基金：
美国国家科学基金会;
关键词：
peak-to-average power ratio; orthogonal frequency division multiplexing; power amplifier; selected mapping;
D O I：
10.1109/TCE.2004.1341681
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Orthogonal frequency division multiplexing (OFDM) has become a popular modulation method in highspeed wireless networks because of its robustness against multipath fading, its simple equalizer structure, and its high bandwidth efficiency. However, in the time domain, the OFDM signal has a large peak-to-average power ratio (PAR), which translates to low power amplifier efficiencies. In this paper we examine and quantify the power savings from PAR reductions. We also relate any power savings to the computational power costs of selected mapping, which is a prominent PAR reduction scheme that results in negligible performance degradation.
引用
收藏
页码：792 / 798
页数：7
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