Abstract:
For the purposes of macroscopic system design a
space-time Rayleigh fading multiple-input multiple-output
(MIMO) radio channel is modelled for an arbitrary transmit
antenna configuration of three to six transmit antennas. A
traditional ring of scatterers model is used to generate the spacetime
cross correlations and thence flat fading channel distortions.
A general trend is demonstrated for a specific non-coherent
modulation scheme where the optimality of different
transmission frame lengths can be related to the well known
autocorrelation function; based on this trend two frame lengths
are chosen for MIMO channel model analysis. Several beneficial
arbitrary transmit antenna configurations are obtained from this
analysis using some typical arbitrary configurations, and some
initial optimisation using a genetic algorithm, from which further
possible optimisation is proposed.
