Title :
Dual-Hop MIMO Amplify-and-Forward Relay Channel Capacity with Keyhole Effect
Author :
Firag, Abdulla ; Suraweera, Himal A. ; Smith, Peter J. ; Yuen, Chau
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Canterbury, Christchurch, New Zealand
fDate :
10/1/2011 12:00:00 AM
Abstract :
Keyhole fading present in some relay based applications can degrade the system performance. In this paper, we investigate the effect of multi-keyhole fading on the ergodic capacity of fixed infrastructure based multiple-input multiple-output (MIMO) amplify-and-forward (AF) relaying systems. Specifically, considering a Rayleigh-multi-keyhole MIMO AF relay channel, we derive an expression for the system´s ergodic capacity. Our capacity expression is valid for arbitrary number of antennas, number of keyholes, keyhole power distribution and all signal-to-noise ratio values.
Keywords :
MIMO communication; Rayleigh channels; amplify and forward communication; channel capacity; relays; Rayleigh multikeyhole MIMO AF relay channel; dual-hop MIMO amplify-and-forward relay channel capacity; ergodic capacity; keyhole fading effect; keyhole power distribution; multikeyhole fading; multiple-input multiple-output amplify-and-forward relaying system; relay based application; signal-to-noise ratio; Antennas; Eigenvalues and eigenfunctions; Fading; MIMO; Power distribution; Relays; Wireless communication; Relay systems; capacity; keyhole; multiple-input multiple-output;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2011.081211.110809
