| 用预留子载波降低OFDM系统峰均比的方法 |
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| 引用本文： | 陈宁,卢长兵. 用预留子载波降低OFDM系统峰均比的方法[J]. 计算机仿真, 2008, 25(10) |
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| 作者姓名： | 陈宁 卢长兵 |
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| 作者单位： | 中南大学信息科学与工程学院,湖南,长沙,410083;中南大学信息科学与工程学院,湖南,长沙,410083 |
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| 摘 要： | 针对正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)所具有的高峰均比问题.提出了一种简单有效的降峰均比的预留子载波的方法.使用预留的子载波形成降低峰均比的信号,通过合理的选择预留载波上的值,从而使时域组合信号的峰均比达到最小,同时当同一小区的扇区数目大于一时,可提高显著带宽的利用率.首先,选择用于降峰均比的子载波;然后.根据选择降峰均比的子载波生成相应的子载波信息,并将生成的信息发给不同扇区的降峰均比模块;最后,在各扇区的降峰均比模块中,使用同一组预留的子载波分别进行本扇区的降峰均比处理.数据仿真验证了所提出方法的有效性.
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| 关 键 词： | 正交频分复用 预留载波 消峰 |
A Method for Reducing PAPA in OFDM System by Reserved Subcarriers |
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| CHEN Ning,LU Chang-bing. A Method for Reducing PAPA in OFDM System by Reserved Subcarriers[J]. Computer Simulation, 2008, 25(10) |
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| Authors: | CHEN Ning LU Chang-bing |
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| Affiliation: | CHEN Ning,LU Chang-bing(School of Information Science , Engineering,Central South University,Changsha Hunan 410083,China) |
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| Abstract: | With respect to the problem of high peak-to-average power ratio (PAPR) of Orthogonal Frequency Division Multiplexing (OFDM), a simple and effective method for reducing PAPA by reserved subcarriers is presented. Making use for signals for reducing PAPR which are formed by reserved subcarriers, the least PAPR of combined signals in time domain can be obtained by reasonable choice of values in reserved subcarriers. At the same time, when the number of sectors is bigger than 1, usage ratio of bandwidth is incre... |
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| Keywords: | OFDM Reserved subcarriers Reducing peak |
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