DocumentCode
1057617
Title
Peak Power Reduction in Closed-Loop MIMO-OFDM Systems via Mode Reservation
Author
Zhang, Honglei ; Goeckel, Dennis L.
Author_Institution
Massachusetts Univ., Boston
Volume
11
Issue
7
fYear
2007
fDate
7/1/2007 12:00:00 AM
Firstpage
583
Lastpage
585
Abstract
This letter studies peak-to-average power ratio (PAPR) reduction for orthogonal frequency-division multiplexing (OFDM) signals in eigenbeamformed multiple antenna systems. The weak eigenmodes abandoned by the waterfilling allocation are intentionally filled in order to offset signal peaks in the time domain.Numerical results indicate that this method can significantly increase the efficiency of peak power constrained systems with no modification of the receiver required.
Keywords
MIMO systems; OFDM modulation; antenna arrays; broadband networks; closed loop systems; eigenvalues and eigenfunctions; closed-loop MIMO-OFDM systems; eigenbeamformed multiple antenna; mode reservation; orthogonal frequency-division multiplexing; peak power reduction; waterfilling allocation; Array signal processing; Discrete Fourier transforms; Frequency division multiplexing; Helium; MIMO; Matrix decomposition; OFDM modulation; Peak to average power ratio; Receiving antennas; Transmitting antennas;
fLanguage
English
Journal_Title
Communications Letters, IEEE
Publisher
ieee
ISSN
1089-7798
Type
jour
DOI
10.1109/LCOMM.2007.070275
Filename
4273768
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