DocumentCode :
836840
Title :
A Reduced-PAR Opportunistic STBC Scheme for Frequency-Selective Channels in the Presence of Frequency Offset
Author :
Wang, Dandan ; Minn, Hlaing ; Al-Dhahir, Naofal
Author_Institution :
Dept. of Electr. Eng., Univ. of Texas at Dallas, Richardson, TX
Volume :
7
Issue :
8
fYear :
2008
fDate :
8/1/2008 12:00:00 AM
Firstpage :
2871
Lastpage :
2876
Abstract :
Opportunistic space-time block codes (STBC) have been investigated for flat-fading channels in the literature. In this paper, we present a novel scheme for integrating them with orthogonal frequency division multiplexing (OFDM) for frequency-selective channels with an unequal error protection capability making it attractive for multimedia and multicasting applications. In addition, our new scheme optimizes the tradeoff between coding gain and peak-to-average ratio (PAR) while minimizing inter-carrier interference in the presence of carrier frequency offset. We show that our scheme achieves a 2 dB reduction in PAR over the conventional scheme.
Keywords :
OFDM modulation; block codes; fading channels; intercarrier interference; multicast communication; multimedia communication; space-time codes; OFDM; flat-fading channels; frequency offset; frequency selective channels; intercarrier interference minimization; multicasting applications; multimedia applications; orthogonal frequency division multiplexing; peak-to-average ratio; reduced-PAR opportunistic STBC scheme; space-time block codes; Block codes; Communication switching; Decoding; Error correction codes; Frequency diversity; Interference; OFDM; Peak to average power ratio; Switches; Transmitting antennas; ICI; OFDM; PAR; STBC;
fLanguage :
English
Journal_Title :
Wireless Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
1536-1276
Type :
jour
DOI :
10.1109/TWC.2008.070200
Filename :
4600196
Link To Document :
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