Title :
On the approximation of MIMO capacity
Author :
Dohler, Mischa ; Aghvami, Hamid
Author_Institution :
Centre for Telecommun. Res., King´´s Coll. London, UK
Abstract :
Information theoretical optimization problems related to the resource allocation of wireless cellular and ad hoc networks are not solvable in closed form due to the nonlinear logarithmic representation of the Shannon capacity. This paper introduces functional approximations to the MIMO capacity over flat Rayleigh fading channels, which allow for analytical solutions to network resource optimization problems. The precision of the suggested approximations is assessed and is shown to provide a very close match to the exact capacity expression.
Keywords :
MIMO systems; Rayleigh channels; ad hoc networks; cellular radio; channel capacity; function approximation; optimisation; MIMO capacity approximation; Rayleigh fading channel; Shannon capacity; ad hoc network; information theoretical optimization; multiple-input multiple-output; network resource optimization; nonlinear logarithmic representation; resource allocation; wireless cellular network; Access protocols; Channel capacity; Communication networks; Decoding; MIMO; Media Access Protocol; Nonlinear equations; Optimization methods; Resource management; Throughput;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2004.840250
