MIMO receiver system using single RF front-end

Conventional MIMO (multiple input multiple output) system is required to a number of RF chains as much as a number of antennas. If a number of antennas increased then a number of RF chains increased. Therefore, it is difficult to apply conventional MIMO system to mobile terminals with limited power. In this paper, we propose a TDM (time division multiplexing)-based single RF chain MIMO system. The outcome shows that performance of the proposed system is similar to conventional MIMO system using multiple RF chains when STO is corrected by phase angle estimation and the synchronizing signal of received signal.