ABSTRACT
This chapter discusses transmit antenna selection (TAS) systems in detail with the explanations on spectral efficiency, diversity order and detection complexity. It also discusses performance of TAS systems with selection combining and maximal ratio combining at receiver over various generalized fading channels. The motivation behind transmit antenna selection in multiple-input multiple-output (MIMO) systems is to achieve reduction in the hardware complexity of the system and computational complexity of the detector/receiver. The pilot based antenna selection needs to transmit pilot sequence for each instant of antenna selection. The technique of norm based antenna selection too maximizes the received signal power. Selecting antennas using maximum received energy does not necessarily guarantee the highest channel capacity. Single TAS and single receiver antenna selection convert the MIMO system into a single-input single-output system while in operation. The maximum data rate for reliable transmission or the channel capacity is one of the measures for performance analysis of wireless communication systems.
