Title :
Effect of tap gain correlation on capacity of OFDM MIMO systems
Author :
Intarapanich, A. ; Kafle, P.L. ; Davies, R.J. ; Sesay, A.B.
Author_Institution :
Dept. of Electr. Eng., Univ. of Calgary, Alta., Canada
Abstract :
The effects of tap gain correlation on the capacity of broadband multiple input, multiple output (MIMO) systems is investigated for orthogonal frequency division multiplexing (OFDM) signalling. A unified broadband MIMO fading channel model is proposed for capacity analysis using correlated tapped delay line fading channels for each antenna pair. It is shown that the amount of tap gain correlation strongly influences the capacity of the broadband MIMO system. When the tap gain correlation is greater than a certain threshold, the capacity advantage of the broadband system vanishes.
Keywords :
MIMO systems; OFDM modulation; channel capacity; fading channels; multipath channels; OFDM MIMO systems; antenna pair; correlation matrices; high-speed wireless communication; multipath propagation environment; number of resolvable paths; system capacity; tap gain correlation; tapped delay line fading channels; unified broadband fading channel model;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20040042
