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Multiuser Interference Cancellation and Detection for Users with More Than Two Transmit Antennas 总被引:1,自引:0,他引:1
We consider J transmitter units each equipped with N transmit antennas over wireless Rayleigh fading channels. Previously in [1], it was proved that when each transmitter unit has TV transmit antennas, using (J - 1)N + r receive antennas for any r ges 1, the receiver can completely separate the signals of J users. The provided diversity to each user was shown to be Nr if the units employ space-time trellis codes even if the units transmit asynchronously. Here, we consider the case when all units are synchronized and employ quasi-orthogonal space-time block codes (N > 2). It is proved that in this case a receiver with J + r - 1 antennas with r ges 1 can separate the transmitted signals of all units and provide each unit with a diversity order of Nr. Based on our interference cancellation technique, we then offer an array processing scheme which provides trade-off between diversity and spatial multiplexing. It is shown via simulations that this array processing scheme performs better than well-known modulation schemes, e.g. space-time block codes and BLAST, for a moderate number of receive antennas. 相似文献
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Noshadian Saeed Ebrahimzade Ata Kazemitabar Seyed Javad 《Multimedia Tools and Applications》2018,77(19):25569-25590
Multimedia Tools and Applications - Due to its inherent properties such as sensitivity to initial condition, ergodicity and systematic parametrization chaos systems have been extensively used in... 相似文献
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Kazemitabar Maedeh A. Lajoie Susanne P. Li Tianshu 《International Journal of Computer-Supported Collaborative Learning》2022,17(2):225-247
International Journal of Computer-Supported Collaborative Learning - Computer-supported collaborative learning (CSCL) environments may at times become socio-emotionally tense and pose challenges... 相似文献
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