Title :
Subcarrier weighting: a method for sidelobe suppression in OFDM systems
Author :
Cosovic, Ivan ; Brandes, Sinja ; Schnell, Michael
Author_Institution :
DoCoMo Commun. Lab. Europe, Munich
fDate :
6/1/2006 12:00:00 AM
Abstract :
In this letter, a method for sidelobe suppression in OFDM systems is proposed and investigated. The proposed method is based on the multiplication of the used subcarriers with subcarrier weights. The subcarrier weights are determined in such a way that the sidelobes of the transmission signal are minimized according to an optimization algorithm which allows several optimization constraints. As a result, sidelobe suppression by subcarrier weighting reduces OFDM sidelobes by more than 10 dB in the average without requiring the transmission of any side information
Keywords :
OFDM modulation; interference suppression; minimisation; radiocommunication; OFDM system; minimisation; optimization algorithm; orthogonal frequency division multiplexing; sidelobe suppression; subcarrier weighting; Bandwidth; Constraint optimization; Frequency division multiplexing; Helium; OFDM modulation; Phase shift keying; Phased arrays; Quadrature amplitude modulation; Throughput; Wireless communication;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2006.1638610
