Modelling of a spatially correlated MIMO wireless channel

Abstract

The channel capacity of a wireless communication system is greatly increased with the usage of multiple antennas at both the transmitter and receiver as long as the environment provides sufficient scattering. This paper shows a new geometric MIMO channel model that has taken the path loss parameter into account, as well as non-isotropic scattering at both ends of the radio link. Separate transmit and receive correlation functions are derived in a compact closed format, which includes some key parameters, such as distance between transmitter and receiver, antenna element spacing and degree of scattering. The capacity of the MIMO fading channel with varying number of antenna elements, distance between transmitter and receiver, various environments, varying signal to noise ratio at the receiver, varying the antenna element spacing at the transmitter and the degree of scattering at transmitter and receiver are investigated and shown for this model.