DocumentCode :
961170
Title :
Reduction of out-of-band radiation in OFDM systems by insertion of cancellation carriers
Author :
Brandes, Sinja ; Cosovic, Ivan ; Schnell, Michael
Author_Institution :
Inst. of Commun. & Navigation, German Aerosp. Center, Wessling
Volume :
10
Issue :
6
fYear :
2006
fDate :
6/1/2006 12:00:00 AM
Firstpage :
420
Lastpage :
422
Abstract :
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
Keywords :
OFDM modulation; interference suppression; optimisation; radiocommunication; OFDM system; cancellation carrier; complex weighting factor; optimization; orthogonal frequency-division multiplexing; out-of-band radiation reduction; sidelobe suppression; signal modulation; Carbon capture and storage; Costs; Data communication; Degradation; Frequency division multiplexing; Helium; OFDM modulation; Phase shift keying; Quadrature amplitude modulation; System performance;
fLanguage :
English
Journal_Title :
Communications Letters, IEEE
Publisher :
ieee
ISSN :
1089-7798
Type :
jour
DOI :
10.1109/LCOMM.2006.1638602
Filename :
1638602
Link To Document :
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