Abstract
In this paper, the capacity of Single User (SU) Multiple Input Multiple Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) system is analyzed under Rayleigh, Rician, Lognormal and Weibull fading channels, and compared with each other under both singly- and doubly-correlated channel conditions. The distribution of the complex Wishart matrix is utilized to derive closed form expressions of ergodic capacity of MIMO-OFDM systems under doubly-correlated channels when the transmitter has no Channel State Information (CSI) and the receiver has perfect CSI. The capacity of MIMO-OFDM systems is plotted for various channels under different system specifications, such as, number of transmit and receive antennas, number of subcarriers, and different power levels. The obtained results are used to study the impact of channel correlation on capacity.
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