DocumentCode :
1443517
Title :
Sidelobe Suppression with Orthogonal Projection for Multicarrier Systems
Author :
Zhang, Jian ; Huang, Xiaojing ; Cantoni, Antonio ; Guo, Y. Jay
Author_Institution :
ICT Centre, CSIRO, Canberra, ACT, Australia
Volume :
60
Issue :
2
fYear :
2012
fDate :
2/1/2012 12:00:00 AM
Firstpage :
589
Lastpage :
599
Abstract :
Sidelobe suppression, or out-of-band emission reduction, in multicarrier systems is conventionally achieved via time-domain windowing which is spectrum inefficient. Although some sidelobe cancellation and signal predistortion techniques have been proposed for spectrum shaping, they are generally not well balanced between complexity and suppression performance. In this paper, an efficient and low-complexity sidelobe suppression with orthogonal projection (SSOP) scheme is proposed. The SSOP scheme uses an orthogonal projection matrix for sidelobe suppression, and adopts as few as one reserved subcarrier for recovering the distorted signal in the receiver. Unlike most known approaches, the SSOP scheme requires multiplications as few as the number of subcarriers in the band, and enables straightforward selection of parameters. Analytical and simulation results show that more than 50dB sidelobe suppression can be readily achieved with only a slight degradation in receiver performance.
Keywords :
cognitive radio; communication complexity; interference suppression; matrix algebra; radio receivers; radio spectrum management; SSOP scheme; cognitive radio; low-complexity sidelobe suppression with orthogonal projection scheme; multicarrier system; orthogonal projection matrix; out-of-band emission reduction; radio receiver; sidelobe cancellation; signal predistortion techniques; spectrum inefficient time-domain windowing; spectrum shaping; Cognitive radio; Complexity theory; OFDM; Receivers; Signal to noise ratio; Vectors; Multicarrier systems; cognitive radio; orthogonal projection; sidelobe suppression;
fLanguage :
English
Journal_Title :
Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
0090-6778
Type :
jour
DOI :
10.1109/TCOMM.2012.012012.110115
Filename :
6148126
Link To Document :
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