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MUSIC type algorithm for joint estimation of parameters in asynchronous MC CDMA systems with antenna array at the transmit and single antenna at the receive side is presented in this paper. The proposed algorithm enables joint of direction of departure (DoD), time delay, and frequency shift estimation of multi-user MC CDMA signals. The algorithm is suitable for use in fading channels and can be used for multipath channel identification. Developed algorithm is near-far resistant, requires no preamble, and can be also applied when user sequences at the transmit or the receive side are not perfectly orthogonal.

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In this paper we evaluate performances of multipleinput multiple-output (MIMO) systems based on the geometrical one-ring scattering channel model. Systems with two antennas at the both the base station (BS) and the mobile station (MS) side are analyzed. We also consider application of LDPC codes on the described MIMO channel model. Simulation results for bit error rate (BER) are given for different values of parameter k (measure of isotropic scattering) and normalized antenna spacing at the BS with and without application of LDPC codes.