Binary Weightbook Design for MIMO OFDM System Using Quantized Feedback

: A particularly promising candidate for next-generation fixed and mobile wireless systems is the combination of MIMO technology with Orthogonal Frequency Division Multiplexing (OFDM). OFDM is a subset of frequency division multiplexing in which a single channel utilizes multiple sub-carriers on adjacent frequencies. MIMO wireless systems are of interest due to their ability to provide substantial gains in capacity and quality. Transmit Beam forming and Receive combining are simple methods for exploiting significant diversity that is available in MIMO wireless systems. Orthogonal Frequency Division Multiplexing (OFDM) effectively deals with detrimental effects caused due to frequency selective fading, which is the major challenging issue in wireless communications. Optimal performance of MIMO-OFDM systems require complete knowledge about the channel and this is hard to realize hence a feedback path is to be established from transmitter to the receiver. The optimum Binary Weightbook is designed which uses quantized feedback from receiver to the transmitter. The performance of Binary Weightbook is almost same as the Grassmannian Weightbook which uses unquantized feedback. .