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In this paper, an alternative jointly optimized transceiver scheme is proposed to reduce the multi-user interference in the distributed antenna system (DAS). First a joint design for the pre-coders and combiners is proposed based on the signal-to-leakage-plus-noise ratio (SLNR) maximization and the receive signal-to-interference-plus-noise ratio (SINR) maximization, respectively. Then a modified weighted...
Distributed antenna system (DAS) can improve the spectral efficiency of cellular systems, especially at the cell edge. In this paper we consider a cognitive radio technique to further improve the cell edge performance of DAS. We consider the following scenario: A secondary user (SU) shares the same band with a primary user (PU) at the cell edge of a DAS, and the SU relays the signal for the PU. The...
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