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Coordinated multipoint has been widely introduced to enhance the capacity, especially that of users at cell edge. Recently energy efficient transmission techniques are increasingly important due to the increase of energy consumption in wireless communication systems. In this paper, an energy efficient cooperative transmission algorithm using coordinated beamforming is proposed for multi-cell MIMO...
Transmit beamforming and receive combining, which is used in multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems, is investigated in this paper. The complexity of linear spherical interpolation algorithm is too large and it can only be applied to unquantized beamforming, so we propose a general spherical interpolation method. This method feeds back pilot subcarrier...
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