Multiple-input multiple-output (MIMO) antenna scheme is an effective technique for future terrestrial broadcasting systems such\nas digital video broadcasting-next-generation handheld (DVB-NGH) to overcome the limits on information theory of traditional\nsingle-antenna wireless communications without any additional bandwidth or increased transmit power. In this paper, we propose\na hybrid beamforming scheme for dual-polarized MIMO spatial multiplexing DVB-NGH broadcasting systems. The system of\ninterest makes use of phase shifters and amplitude attenuators for the digital-analog precoder at beamforming stage of the\ntransmitter end to maximize the signal-to-noise ratio to increase the channel capacity of the DVB-NGH systems. At the receiver\nend, the maximum likelihood (ML) detector is used to evaluate the system performance. We consider the signal-to-interferenceand-\nnoise ratio (SINR) and the achievable average capacity for the DVB-NGH MIMO with various FFT sizes, number of\ntransmit antennas, and different modulation schemes. The performance results on bit error rate, channel capacity, and\nbeampatterns show that the proposed hybrid beamforming and dual-polarized MIMO spatial multiplexing schemes provide\nmore robustness against signal interference by beamforming and/or nulling techniques. The simulation results also show that\nthe proposed system achieves higher capacity than the existing MIMO schemes for the DVB-NGH systems.
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