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This paper studies downlink coordinated beamforming schemes with overlapped clusters, where a base station (BS) may belong to multiple clusters selected by different users. Subject to the inherent constraint on information sharing for overlapped clusters, i.e., the information of a user is shared only within the user's coordinating cluster, we propose two decentralized coordinated beamforming schemes,...
Coordinated multi-point transmission (CoMP) is a promising strategy to provide high spectral efficiency for cellular systems. To facilitate multicell precoding, downlink channel is estimated via uplink training in time division duplexing systems by exploiting channel reciprocity. Virtual subcarriers in practical orthogonal frequency division multiplexing (OFDM) systems degrade the channel estimation...
Many successive scheduling schemes associated with linear transmit beamforming have been proposed which can asymptotically achieve the sum rate of dirty paper coding (DPC) in Ltd. channels. In this paper, the performance of the successive scheduling in spatially correlated channels is studied. Then we propose a low complexity alternating user scheduling (AUS), which can be applied to both zero-forcing...
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