Paper Info
Title
Effects of Spatial Correlation on the Sum Rate Distribution of ZF Receivers in MU-MIMO Systems
Abstract
The performance of multi-user multiple-input multiple-output (MU-MIMO) systems is not only affected by multi-path fading, but also by shadowing and path-loss. In this paper, we concentrate on the sum rate distribution of MU-MIMO systems employing linear zero-forcing receivers, accounting for both multi-path fading and shadowing effects, as well as spatial correlation at the transmit and receiver sides. In particular, we consider the classical spatially correlated lognormal model, and propose closed-form bounds on the distribution of achievable sum rates in MU-MIMO systems. With the help of these bounds, we derive a relationship between the inter-user distance and channel 10% outage sum rate under different environmental features. A practical conclusion from our results is that the effect of spatially correlated shadowing can be considered as independent when the inter-user distance is approximately five times the shadowing correlation distance. A detailed analysis of the effects of composite channel attenuation consisting of multi-path fading and shadowing is also provided.
Year
DOI
Venue
2014
10.1109/VTCSpring.2014.7022898
VTC Spring
Keywords
Field
DocType
interuser distance,radio transmitters,composite channel attenuation effects,fading channels,telecommunication network reliability,linear zero-forcing transmitter,electromagnetic wave attenuation,multiuser multiple input multiple output system,mu-mimo system,multipath channels,channel outage sum rate,mimo communication,classical spatially correlated lognormal model,spatially correlated shadowing effects,radio receivers,zf receiver sum rate distribution,multiuser detection,multipath fading effects,closed-form bounds,shadow mapping,correlation,upper bound,mimo
Multi-user MIMO,Spatial correlation,Fading,Upper and lower bounds,MIMO,Communication channel,Shadow mapping,Electronic engineering,Log-normal distribution,Mathematics
Conference
ISSN
Citations 
PageRank 
2577-2465
0
0.34
References 
Authors
7
2
Name
Order
Citations
PageRank
Ou Zhao141.44
Hidekazu Murata216437.72