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Generalized multiuser orthogonal space-division multiplexing
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DOI：10.1109/TWC.2004.837449.png)
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This paper addresses the problem of performing orthogonal space-division multiplexing (OSDM) for downlink, point-to-multipoint communications when multiple antennas are utilized at the base station (BS) and (optionally) all mobile stations (MS). Based on a closed-form antenna weight solution for single-user multiple-input multiple-output communications; in the presence of other receiver points, we devise an iterative algorithm that finds the multiuser antenna weights for OSDM in downlink or broadcast channels. Upon convergence, each mobile user will receive only the desired activated spatial modes with no cochannel interference. Necessary and sufficient conditions for the existence of OSDM among the number of mobile users, the number of transmit antennas at the BS, and the number of receive antennas at the MS, are also derived. The assumption for the proposed method is that the BS knows the channels for all MS's and that the channel dynamics are quasi-stationary.
Keyword:
broadcast channels
cochannel interference
diversity
joint-channel diagonalization
multiple-input multiple-output (MIMO)
multiuser communications
orthogonal space-division multiplexing
smart antennas
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期刊
IF:
10.7
论文数:
1.3W
被引数:
5.3W
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59th ENMC International Workshop: Spinal Muscular Atrophies: recent progress and revised diagnostic criteria 17–19 April 1998, Soestduinen, The Netherlands第59届ENMC国际研讨会: 脊髓性肌萎缩: 最新进展和修订的诊断标准1998年4月19日，荷兰Soestduinen
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