Paper Info
Title
Optimal design of uniform rectangular antenna arrays for strong line-of-sight MIMO channels
Abstract
We investigate the optimal design of uniform rectangular arrays (URAs) employed in multiple-input multiple-output communications, where a strong line-of-sight (LOS) component is present. A general geometrical model is introduced to model the LOS component, which allows for any orientation of the transmit and receive arrays, and incorporates the uniform linear array as a special case of the URA. A spherical wave propagation model is used. Based on this model, we derive the optimal array design equations with respect to mutual information, resulting in orthogonal LOS subchannels. The equations reveal that it is the distance between the antennas projected onto the plane perpendicular to the transmission direction that is of importance with respect to design. Further, we investigate the influence of nonoptimal design, and derive analytical expressions for the singular values of the LOS matrix as a function of the quality of the array design. To evaluate a more realistic channel, the LOS channel matrix is employed in a Ricean channel model. Performance results show that even with some deviation from the optimal design, we get better performance than in the case of uncorrelated Rayleigh subchannels.
Year
DOI
Venue
2007
10.1155/2007/45084
EURASIP J. Wireless Comm. and Networking
Keywords
Field
DocType
strong line-of-sight mimo channel,array design,nonoptimal design,los channel matrix,orthogonal los subchannels,los component,optimal design,los matrix,uniform rectangular antenna array,general geometrical model,ricean channel model,optimal array design equation,antenna array
Rayleigh scattering,Topology,Perpendicular,Telecommunications,Singular value,Expression (mathematics),Matrix (mathematics),Computer science,Communication channel,Real-time computing,Optimal design,Mutual information
Journal
Volume
Issue
ISSN
2007
2
1687-1499
Citations 
PageRank 
References 
12
1.37
9
Authors
3
Name
Order
Citations
PageRank
Frode Bøhagen116314.75
Pål Orten28510.77
Geir Øien3272.28