Combining CoMP With Semi-Smart Antennas to Improve Performance
It is well known that cell-edge users in OFDMA cellular networks suffer poorer SINR because of the greater path loss to the Base Station (BS) and increased interference from neighbouring cells. Co-ordinated Multi-Point (CoMP) has been proposed as a technique to overcome that problem. CoMP is a distributed MIMO approach that changes the interference signal from neighbouring base stations into a useful signal; it does this by ensuring the signals from base stations are transmitted in a cooperative way. This does require the BSs to be synchronised and to cooperate tightly in order to create MIMO channel coding.