Sidelobe Suppression in NC-OFDM Systems using Constellation Adjustment

被引：43
|
作者：
Li, Dong [1 ]
Dai, Xianhua [1 ]
Zhang, Han [1 ]
机构：
[1] Sun Yat Sen Univ, Dept Elect & Commun Engn, Guangzhou 510275, Guangdong, Peoples R China
来源：
IEEE COMMUNICATIONS LETTERS | 2009年 / 13卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Sidelobe suppression; NC-OFDM; constellation adjustment;
D O I：
10.1109/LCOMM.2009.090031
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
In this letter, a new method for sidelobe suppression in non-contiguous orthogonal frequency division multiplexing (NC-OFDM) systems is proposed. Unlike the conventional approach, sidelobes are suppressed by iteratively adjusting the constellation points for the subcarriers that are close to the edges of the used bandwidth. The constellation points corresponding to the maximum sidelobe suppression are chosen for transmission. Simulation results show that the proposed algorithm yields good performance improvement in terms of sidelobe suppression, and does not have a significant impact on the peak-to-average power ratio (PAPR).
引用
收藏
页码：327 / 329
页数：3
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