DocumentCode :
2456547
Title :
On Capacity-Maximizing Angular Densities of Multipath in MIMO Channels
Author :
Levin, Georgy ; Loyka, Sergey
Author_Institution :
Sch. of Inf. Technol. & Eng., Univ. of Ottawa, Ottawa, ON, Canada
fYear :
2010
fDate :
6-9 Sept. 2010
Firstpage :
1
Lastpage :
5
Abstract :
This paper provides a partial answer to the question: "what is the best angular density of multipath in MIMO channels?" using the size-asymptotic theory of Toeplitz matrices for uniform 2-D and 3-D antenna arrays. A Kronecker-type approximation of the array correlation structure is proposed and used to find the angular densities that completely eliminate correlation between any elements of antenna arrays and thus maximize the asymptotic MIMO capacity for a broad class of fading distributions. At half-wavelength spacing, the best angular density is shown to be non-uniform, which implies that the popular Clarke\´s (Jake\´s) model does not represent the best case scenario. The asymptotic results are validated via Monte-Carlo simulations, and a number of practical guidelines for antenna design and optimal orientation are provided.
Keywords :
MIMO communication; Monte Carlo methods; Toeplitz matrices; antenna arrays; approximation theory; wireless channels; 2D antenna arrays; 3D antenna arrays; Kronecker-type approximation; MIMO channels; Monte-Carlo simulations; Toeplitz matrices; antenna design; array correlation structure; capacity-maximizing angular densities; fading distributions; half-wavelength spacing; size-asymptotic theory; Antenna arrays; Antenna measurements; Approximation methods; Correlation; MIMO;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 IEEE 72nd
Conference_Location :
Ottawa, ON
ISSN :
1090-3038
Print_ISBN :
978-1-4244-3573-9
Electronic_ISBN :
1090-3038
Type :
conf
DOI :
10.1109/VETECF.2010.5594087
Filename :
5594087
Link To Document :
بازگشت