Title :
On the bounds of correlated rayleigh channel capacity with geometrical MIMO channel model
Author :
Li, Yonghua ; He, Zhiqiang ; Lin, Jiaru ; Lv, Tiejun
Author_Institution :
Key Lab. of Universal Wireless Comunications, Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
MIMO system has been proven to provide higher capacity that is linear increase with the number of antennas. But this is true only in independent conditions, when the spatial-temporal fading correlation exists, the capacity may vary. In the study, the geometrical MIMO channel model is presented. Based on the formula of MIMO ergodic capacity, the capacity limits are investigated with arbitrary finite number of antennas. It first derives the exact expressions for the upper and lower bounds in doubly correlated MIMO channels. Then a simple expression for the capacity bounds is attained for the high SNR. Finally, some results are provided by Monte Carlo simulation to verify the tightness of the derived bounds.
Keywords :
MIMO communication; Rayleigh channels; MIMO ergodic capacity; MIMO system; correlated Rayleigh channel capacity; doubly correlated MIMO channels; geometrical MIMO channel model; lower bounds; spatial-temporal fading correlation; upper bounds; Correlation; Fading; MIMO; Receiving antennas; Signal to noise ratio; MIMO; bounds; capacity; correlation;
Conference_Titel :
Network Infrastructure and Digital Content, 2010 2nd IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-6851-5
DOI :
10.1109/ICNIDC.2010.5657915
