Abstract
Antenna selection is a simple yet efficient technique to obtain diversity advantage from Multi-Input and Multi-Output (MIMO) communication systems. Without specifying system factors such as antenna selection criterion, coding and decoding, equalization, and channel statistics, we evaluate diversity orders of antenna selections over frequency-selective MIMO channels. We show that the diversity order of any configuration approximately scales in the numbers of transmit and receive antennas. Numerical simulations are provided to validate our analysis.