Transmitter Design for LMS-MIMO-MCCDMA Systems With Pilot Channel Estimates and Zero Forcing Equalizer
The authors propose a downlink Multiple-Input MultipleOutput (MIMO) Multi-Carrier Code Division Multiple Access (MCCDMA) system with adaptive beamforming algorithm for smart antennas. The algorithm used in this paper is based on the Least Mean Square (LMS), with Pilot Channel Estimation (PCE) and the Zero Forcing Equalizer (ZFE) in the receiver, requiring reference signal and no knowledge channel. MC-CDMA is studied in a multiple antenna context in order to efficiently exploit robustness against multipath effects and multi-user flexibility of MC-CDMA and channel diversity offered by MIMO systems for radio mobile channels. Computer simulations, considering multi-path Rayleigh Fading Channel, interference inter symbol and interference are presented to verify the performance. Simulation results show that the scheme achieves good performance in a multi-user system.