Reduction of out-of-band radiation in OFDM systems by insertion of cancellation carriers

被引：208

作者：

Brandes, Sinja ^{[1
]}

Cosovic, Ivan

Schnell, Michael

机构：

[1] German Aerosp Ctr DLR, Inst Commun & Navigat, D-82234 Wessling, Germany

[2] DoCoMo Commun Lab Europe GmbH, D-80687 Munich, Germany

来源：

IEEE COMMUNICATIONS LETTERS | 2006年 / 10卷 / 06期

关键词：

orthogonal frequency-division multiplexing (QFDM); out-of-band radiation; sidelobe suppression;

D O I：

10.1109/LCOMM.2006.1638602

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

Orthogonal frequency-division multiplexing (OFDM) suffers from high out-of-band radiation. In this letter, we investigate a new method for sidelobe suppression characterized by the insertion of a few so-called cancellation carriers (CCs) at both sides of the OFDM spectrum. These special carriers are modulated with complex weighting factors which are optimized such that the sidelobes of the CCs cancel the sidelobes of the transmit signal. With this technique a significant reduction of out-of-band radiation is achieved at the cost of a small degradation in system performance.

引用

页码：420 / 422

页数：3