Advanced Wireless Technology
3.1 Multiple-Input Multiple-Output (MIMO)
According to the number of transmit (TX) antennas and the number of receive (RX) antennas, wireless systems can be classified as single-input single-output (SISO), single-input multiple-output (SIMO), multiple-input single-output (MISO), and multiple-input multiple-output (MIMO) systems, where the input and output are with respect to the channel between the transmitter and the receiver, as shown in Figure 3.1. The advantages of employing multiple antennas and related signal processing include [1, 2]:
- Array gain As multiple copies of the signals are received at a receiver with more than one antenna, the signals can be combined coherently to achieve ...