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In multiple transmitter multiple receiver (MTMR) communication represented by multi-cellular systems, receivers (UTs: user terminals) might be located far from their target transmitter (BSs: base stations), and suffered from attenuation of the desired signal and strong interferences from nontarget transmitters. As a solution to this problem, this paper considers multi-cellular system using the cooperation...
This paper describes design methods of MIMO (multiple input multiple output) AF (amplify and forward) relay system for multiuser processing which is useful for multi-cellular networks. Each source is allocated one relay terminal, and relays cooperatively work to mitigate interferences one another based on ZF (zero forcing) or maximum SINR (signal to interference plus noise ratio) criteria. The necessary...
This paper describes a design method of two-hop single and multiple relay systems in which sources, relays, and destination are equipped with multiple antenna. The existence of interference signal and perfect CSI (channel state information) condition are assumed, and the design is carried out based on the maximum SINR (signal to interference plus noise ration) criterion. For multiple relay case, array...
Conventional MIMO (multiple input multiple output) multiuser systems consider communications between one base station (BS) and multiple user terminals (UTs) both in downlink and uplink scenarios.This paper deals with the case in which multiple BSs transmit different data sequence to different target UTs which becomes a MTMR (multiple transmitter multiple receiver) problem, and describes a maximum...
This paper presents multiple input multiple output (MIMO) system adopting spatio-temporal processing in both transmitter and receiver sides for multiuser communication under frequency selective fading (FSF). The proposed system assumes the perfect channel state information (CSI) at the base station (BS), and all the weights are computed at BS and then fed back to mobile stations (MSs). The weights...
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