DocumentCode :
3243788
Title :
A Systematic Design of Multiuser Space-Frequency Codes for MIMO-OFDM Systems
Author :
Wei Zhang ; Ben Letaief, Khaled
Author_Institution :
Hong Kong Univ. of Sci. & Technol., Hong Kong
fYear :
2007
fDate :
24-28 June 2007
Firstpage :
1054
Lastpage :
1058
Abstract :
While a great number of space-time (ST) code and space-frequency (SF) code designs have been extensively studied for point-to-point single-user links and directly applied to each user for multiuser links, little effort has been dedicated to multiuser ST/SF code design. Recently, this issue was considered by Gartner and Bolcskei and from a perspective of increasing system throughput, they proposed a joint code design for a 2-user scenario. In this paper, by applying a signal space diversity technique and a judicious phase rotation to each of a group of uncoordinated users, we propose a systematic design of SF codes for multiuser MIMO-OFDM systems over frequency-selective fading channels. We prove that multiuser SF codes with maximum-likelihood (ML) detection can achieve the maximum diversity for each user while minimizing the interference introduced from all the other users.
Keywords :
MIMO communication; OFDM modulation; channel coding; diversity reception; fading channels; interference suppression; maximum likelihood detection; modulation coding; radio links; space-time codes; MIMO-OFDM systems; frequency-selective fading channels; interference minimization; joint code design; maximum-likelihood detection; multiuser links; multiuser space-frequency codes; point-to-point single-user links; signal space diversity technique; space-time code; user diversity; Communications Society; Design engineering; Diversity methods; Fading; Interference; MIMO; Pairwise error probability; Receiving antennas; Space technology; Transmitting antennas;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, 2007. ICC '07. IEEE International Conference on
Conference_Location :
Glasgow
Print_ISBN :
1-4244-0353-7
Type :
conf
DOI :
10.1109/ICC.2007.179
Filename :
4288850
Link To Document :
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