The standard for evaluating the correlation characteristics of MIMO channel

The use of multiple antenna elements both at the transmitter and receiver results in enormous capacity increase. But for the use of this technique, the multipath scattering must be sufficiently rich; otherwise the performance of communications system will get worse compared with not using this technique. In order to make full use of the advantage of this technique under appropriate radio propagation environment, we present a standard for evaluating the correlation characteristics of the MIMO channel. With this standard, we can judge if the multipath scattering of the radio propagation environment is sufficiently rich, and then decide if this propagation mode is used.