DocumentCode :
876775
Title :
On the MIMO channel capacity of multidimensional signal sets
Author :
Xin Ng, Soon ; Hanzo, Lajos
Author_Institution :
Sch. of Electron. & Comput. Sci., Univ. of Southampton, UK
Volume :
55
Issue :
2
fYear :
2006
fDate :
3/1/2006 12:00:00 AM
Firstpage :
528
Lastpage :
536
Abstract :
In this contribution, the capacity of multiple-input multiple-output (MIMO) systems using multidimensional phase-shift keying/quadratic-amplitude modulation signal sets is evaluated. It was shown that transmit diversity is capable of narrowing the gap between the capacity of the Rayleigh-fading channel and that of the additive white Gaussian noise channel. However, because this gap becomes narrower when the receiver diversity order is increased, for higher order receiver diversity, the performance advantage of transmit diversity diminishes. A MIMO system having full multiplexing gain has a higher achievable throughput than the corresponding MIMO system designed for full diversity gain, although this is attained at the cost of a higher complexity and a higher signal-to-noise ratio. The tradeoffs between diversity gain, multiplexing gain, complexity, and bandwidth are studied.
Keywords :
AWGN; MIMO systems; Rayleigh channels; channel capacity; diversity reception; multiplexing; phase shift keying; quadrature amplitude modulation; radio networks; MIMO channel capacity; Rayleigh fading channel; additive white Gaussian noise channel; multidimensional phase-shift keying; multidimensional signal sets; multiplexing gain; quadrature-amplitude modulation signal sets; receiver diversity; signal-to-noise ratio; transmit diversity; Additive white noise; Channel capacity; Diversity methods; MIMO; Multidimensional systems; Phase modulation; Phase shift keying; Rayleigh channels; Signal design; Throughput; Capacity; diversity; multiple-input multiple-output (MIMO); multiplexing;
fLanguage :
English
Journal_Title :
Vehicular Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9545
Type :
jour
DOI :
10.1109/TVT.2005.863357
Filename :
1608632
Link To Document :
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