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Amplitude clipping and iterative reconstruction of STBC/SFBC-OFDM signals SCIE SCOPUS

Title
Amplitude clipping and iterative reconstruction of STBC/SFBC-OFDM signals
Authors
Kwon, UKKim, DKim, KIm, GH
Date Issued
2007-11
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGI
Abstract
As with orthogonal frequency-division multiplexing (OFDM), one main disadvantage of multi-input multi-output (MIMO) OFDM is the prohibitively large peak-to-average power ratio (PAPR) of transmitted signals on different antennas, which can be reduced by a deliberate amplitude clipping. However, clipping causes distortion that degrades the system performance. In this letter, we propose clipping noise mitigation techniques for space-time and space-frequency block coded (STBC/SFBC)-OFDMs. A new SFBC transmitter for clipped OFDM is proposed, and the optimum equalizer is derived for reconstruction of the clipped signals. Simulation results show that the proposed receivers effectively recover contaminated STBC/SFBC-OFDM signals with a moderate computational complexity.
Keywords
clipping; iterative amplitude reconstruction (IAR); orthogonal frequency-division multiplexing (OFDM); space-frequency block code (SFBC); space-time block code (STBC); TRANSMISSION; REDUCTION; SYSTEMS
URI
https://oasis.postech.ac.kr/handle/2014.oak/23113
DOI
10.1109/LSP.2007.900
ISSN
1070-9908
Article Type
Article
Citation
IEEE SIGNAL PROCESSING LETTERS, vol. 14, no. 11, page. 808 - 811, 2007-11
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임기홍IM, GI HONG
Dept of Electrical Enginrg
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