Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) system is capable of improving the performance in AdHoc networks. It has a wide application in wireless communications due to its dramatic enhancement in reliability and capacity as compared to single antenna solutions. A study of multi-input multi-output (MIMO) frequency-selective fading channels using perfect and partial Channel State Information (CSI) model is done. In this system two-dimensional (2-D) coder-beamformer is applied on each subcarrier. The paper presents a MIMO-OFDM system with adaptive modulation, adaptive resource allocation and Peak to Average Power Ratio (PAPR) reduction techniques. The paper mainly aims at improvement in system throughput. Varying the number of antennas at the transmitter and the receiver stations and using different detection schemes for different code rates including Bell-Labs Layered Space-Time (BLAST) and Alamouti schemes, the effect of channel correlation on the system has been studied using simulation tools.

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Multiuser detection/ detector (MUD) orthogonal frequency division multiplexing (OFDM) multiple input multiple output (MIMO) channel state information space division multiple access (SDMA) almouti scheme BLAST system