Sidelobe suppression in OFDM-based spectrum sharing systems using adaptive symbol transition

被引：149

作者：

Mahmoud, Hisham A. ^{[1
]}

Arslan, Huseyin ^{[1
]}

机构：

[1] Univ S Florida, Dept Elect Engn, Tampa, FL 33620 USA

来源：

IEEE COMMUNICATIONS LETTERS | 2008年 / 12卷 / 02期

关键词：

CR; OFDM; sidelobe suppression;

D O I：

10.1109/LCOMM.2008.071729

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, we introduce a new method for orthogonal frequency division multiplexing (OFDM) sidelobe suppression. An extension is added to OFDM symbols that is calculated using optimization methods to minimize adjacent channel interference (ACI) while keeping the extension power at an acceptable level. Using this technique, interference to adjacent signals is reduced significantly at the cost of a small decrease in the useful symbol energy. The proposed method can be used by cognitive radio (CR) systems to shape the spectrum of OFDM signals and to minimize interference to licensed users (LU), or to reduce the size of guard bands used in conventional OFDM systems.

引用

页码：133 / 135

页数：3

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