DocumentCode :
2947411
Title :
Fast link adaptation for opportunistic multiuser MIMO-OFDM wireless networks
Author :
Esslaoui, M. ; Riera-Palou, Felip ; Femenias, Guillem
Author_Institution :
Mobile Commun. Group, Univ. of the Balearic Islands, Mallorca, Spain
fYear :
2011
fDate :
6-9 Nov. 2011
Firstpage :
372
Lastpage :
376
Abstract :
This paper presents a practical scheme to exploit opportunistic multiuser multiple-input multiple-output (MU-MIMO) diversity in multicarrier systems using orthogonal frequency division multiplexing. The scheme is based on a multi-carrier user selection algorithm to schedule the users that should transmit simultaneously and a fast link adaptation (FLA) technique that, in light of the instantaneous channel state information (CSI), determines the most appropriate transmission parameters for each user. Numerical results based on parameters typically used in modern wireless local area networks (WLANs) show that, when compared to an opportunistic TDMA scheme, the proposed system can improve the system throughput performance by a factor proportional to the number of transmit antennas.
Keywords :
MIMO communication; OFDM modulation; diversity reception; multi-access systems; radio links; transmitting antennas; wireless channels; FLA technique; MU-MIMO diversity; fast link adaptation; instantaneous channel state information; multicarrier system; multicarrier user selection; opportunistic TDMA scheme; opportunistic multiuser MIMO-OFDM wireless network; opportunistic multiuser multiple-input multiple-output diversity; orthogonal frequency division multiplexing; system throughput; transmission parameter; transmit antenna; wireless local area network; Encoding; MIMO; Modulation; Neodymium; OFDM; Signal to noise ratio; Throughput;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communication Systems (ISWCS), 2011 8th International Symposium on
Conference_Location :
Aachen
ISSN :
2154-0217
Print_ISBN :
978-1-61284-403-9
Electronic_ISBN :
2154-0217
Type :
conf
DOI :
10.1109/ISWCS.2011.6125386
Filename :
6125386
Link To Document :
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