DocumentCode :
2893651
Title :
Adaptive frequency diversity in MIMO-OFDM systems based on spatial multiplexing
Author :
Riera-Palou, Felip ; Femenias, Guillem
Author_Institution :
Mobile Commun. Group, Univ. of the Balearic Islands, Mallorca, Spain
fYear :
2010
fDate :
19-22 Sept. 2010
Firstpage :
86
Lastpage :
90
Abstract :
This work presents a technique to adapt the frequency diversity order in a multicarrier multiantenna system. In particular, this study focuses on the combination of group-orthogonal code-division multiplex OFDM (GO-CDM OFDM), a multicarrier technique that has been shown to outperform conventional OFDM, with spatial multiplexing. Assuming a maximum likelihood detector (ML) is used at the receiver, the proposed method is shown to be effective in estimating the instantaneous channel rank, allowing the system to be dynamically configured to achieve the maximum diversity order while keeping computational complexity as low as possible. This technique can be a useful enhancement for those systems that are required to operate in a wide variety of scenarios subject to a tight computationl/power budget (e.g. mobile terminals), thus precluding them from using a worst-case designed solution.
Keywords :
MIMO communication; OFDM modulation; code division multiplexing; computational complexity; diversity reception; maximum likelihood detection; orthogonal codes; space division multiplexing; MIMO-OFDM systems; adaptive frequency diversity; computational complexity; group-orthogonal code-division multiplex OFDM; maximum likelihood detector; multicarrier multiantenna system; spatial multiplexing; Correlation; Frequency diversity; MIMO; OFDM; Receivers; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communication Systems (ISWCS), 2010 7th International Symposium on
Conference_Location :
York
ISSN :
2154-0217
Print_ISBN :
978-1-4244-6315-2
Type :
conf
DOI :
10.1109/ISWCS.2010.5624488
Filename :
5624488
Link To Document :
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