Abstract:
Multiple antenna subset selection, and the use of
transmit antenna supersets, is introduced for non-coherent spacetime
modulation across multiple-input multiple-output wireless
channels. Differential diagonal unitary space-time modulation is
employed across the Rayleigh flat-fading channel. The basis for
subset selection is outlined, and assuming a rich-scattering wireless
environment, a general trend of decreasing degradation in detection
performance from the optimum is demonstrated as the size
of the transmit antenna set increases. One method of antenna superset
utilisation is established, with associated diversity and capacity
gains over the original antenna set, and decreased computational
complexity and varying improvements in bit-error-rate performance
over a coding constellation that corresponds to the size
of the superset.
