Antenna allocation in a MIMO-OFDM system using a combination of bulk and per-tone antenna selection

摘要

Antenna allocation or selection in a multi-antenna, multi-carrier wireless communications device can be performed at a receiver or a transmitter of a wireless communications signal. A selection is made of a subset (e.g. TX2 and TX3) of the available antennae, and each antenna from the subset is used for transmission. Each subcarrier is transmitted on only one of the antennas but several different sub-carriers can be transmitted on the same antenna. Thus, it can be said that the antenna selection comprises a combination of bulk and per-tone antenna selection. The antenna selection criterion is preferably based on the optimisation of a performance metric, such as minimisation of BER, or maximisation of SNR.