Abstract:
Jakes model for frequency flat fading processes in mobile radio systems is extended to allow for better modelling of
a space-time Rayleigh fading multiple-input multiple-output (MIMO) channel. A conventional four transmit and
two receive (4,2) MIMO radio channel is analysed, and a ring of scatterers model is used to find the fading channel
distortions. A base station antenna spacing for appropriate partially correlated fading is assumed. Differential spacetime
modulation is used over the channel. A general trend is presented showing optimality of a range of frame
lengths over the MIMO channel for rapid decoding in this differential space-time application. The importance of
restricting the frame lengths within certain limits is also demonstrated.
