Title :
Ergodic Capacity Analysis of MIMO Relay Network Over Rayleigh-Rician Channels
Author :
Siyuan Zhou ; Alfano, Giuseppa ; Nordio, Alessandro ; Chiasserini, Carla-Fabiana
Author_Institution :
Dipt. di Elettron. & Telecomun., Politec. di Torino, Turin, Italy
Abstract :
We present an analytical characterization of the ergodic capacity for an amplify-and-forward (AF) multiple-input multiple-output (MIMO) relay network over asymmetric channels. In the two-hop system that we consider, the source-relay and relay-destination channels undergo Rayleigh and Rician fading, respectively. Considering arbitrary-rank means for the relay-destination channel, we first investigate the marginal distribution of an unordered eigenvalue of the cascaded AF channel, and we provide an analytical expression for the ergodic capacity of the system. The closed-form expressions that we derive are computationally efficient and validated by numerical simulation. Our results also show the impact of the signal-to-noise ratio and of the Rician factor on this asymmetric relay network.
Keywords :
MIMO communication; Rayleigh channels; Rician channels; amplify and forward communication; relay networks (telecommunication); MIMO relay network; Rayleigh-Rician channels; amplify-and-forward multiple-input multiple-output relay network; cascaded AF channel; closed-form expressions; ergodic capacity analysis; relay-destination channels; source-relay channels; Eigenvalues and eigenfunctions; Fading; Monte Carlo methods; Relays; Rician channels; Signal to noise ratio; Amplify-and-Forward relay; Ergodic capacity; MIMO; Rayleigh fading; Rician fading; amplify-and-forward (AF) relay; multiple-input multiple-output (MIMO); rayleigh fading;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2015.2396068
