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The robust transceiver design in dual-hop up-link multi-user multiple-input multiple-output (MIMO) system with amplify-and-forward relay is presented in this paper. Different from the most existing works, a complex channel model is adopted, the antenna correlation at both ends of the channel and the channel estimation errors are taken into account. The proposed design method provides a joint iterative...
By taking the imperfect channel state information(CSI) into account, the optimal precoding matrix is deduced with the proposition that the full CSI of the source-relay link and the estimation errors and antennas correlation information of the relay-destination link are known by the relay node. Considering the maximum power constraint at the relay node, the precoding matrix is optimized based on the...
Multiuser Turbo-BLAST system model based on zero-forcing principle is presented and the user scheduling algorithm and power allocation scheme are proposed in this paper. At the transmitter, the zero-forcing beam-forming technique is adopted for user multiplexing. When there are a lot of active users, the proposed user scheduling algorithm is proposed to pick the proper user subset and the adaptive...
The zero-forcing beam-forming algorithm is proposed and the modified iterative detector is presented for the downlink multiuser Turbo-BLAST system in this paper. At the transmitter, the beam-forming scheme based on zero-forcing rule is adopted to maximize the capacity of the desired user. At the receiver, the pretreatment matrix is used to mitigate the multiuser interference (MUI) and the iterative...
We propose a water-filling power allocation scheme for Turbo-BLAST system in the presence of channel state information imperfection. Subjected to the total transmit power constraint, the water-filling rule is used to allocate proper power for every sub-channel in order to improve channel capacity performance based on the imperfect channel state information. Simulation results show that the proposed...
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