DocumentCode :
2898356
Title :
Asymptotic Analysis of Ergodic Capacity for Amplify-and-Forward MIMO Relaying Systems
Author :
Lee, Kyoung-Jae ; Kim, Jin-Sung ; Caire, Giuseppe ; Lee, Inkyu
Author_Institution :
Sch. of Electr. Eng., Korea Univ., Seoul, South Korea
fYear :
2010
fDate :
23-27 May 2010
Firstpage :
1
Lastpage :
5
Abstract :
In this paper, we analyze asymptotic ergodic capacity of multiple-input multiple-output (MIMO) amplify-and-forward (AF) relaying systems with channel state information (CSI) at the relay. By exploiting the asymptotic results for eigenvalue distributions, we derive the ergodic capacity in various asymptotic antenna regimes as a closed-form expression with arbitrary system parameters. The analyzed results demonstrate that increasing the number of source antennas causes the capacity shrink phenomenon which is analogous to the channel hardening effect in multi-user MIMO systems. Although we assume asymptotically large antennas to obtain the closed-form expressions, simulation results show that our derived expressions are surprisingly accurate even with the moderate number of antennas, and thus can serve for analyzing practical MIMO relay networks.
Keywords :
MIMO communication; channel capacity; eigenvalues and eigenfunctions; multi-access systems; multifrequency antennas; MIMO; amplify and forward; asymptotic antenna regimes; eigenvalue distributions; ergodic capacity; multiple input multiple output; multiuser systems; relaying systems; Analytical models; Channel state information; Closed-form solution; Communications Society; Decoding; Eigenvalues and eigenfunctions; Information analysis; MIMO; Relays; USA Councils;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications (ICC), 2010 IEEE International Conference on
Conference_Location :
Cape Town
ISSN :
1550-3607
Print_ISBN :
978-1-4244-6402-9
Type :
conf
DOI :
10.1109/ICC.2010.5501851
Filename :
5501851
Link To Document :
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