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In this paper, an adaptive transmit power allocation (TPA) scheme is proposed for Vertical Bell Labs Layered SpaceTime (V-BLAST) system with delayed channel state information (CSI) feedbacks. At the transmitter, the suboptimal adaptive power allocation scheme is presented to minimize bit error rate (BER) with total power constraint. At the receiver, the zero-forcing (ZF) rule is employed for signal...
In this paper, a new transmit power allocation (TPA) algorithm is proposed for Vertical Bell Labs Layered Space-Time (V-BLAST) system with channel correlation and estimation error. At the receiver, the minimum mean squared error (MMSE) rule is adopted for signal detection. At the transmitter, adaptive power allocation scheme based on Lagrange multiplier method is presented to allocate appropriate...
We propose an adaptive transmit antennas selection and transmit power allocation scheme for Vertical-Bell Laboratories Layered Space-Time system in the presence of channel state information imperfection. At the transmitter, based on imperfect channel state information, the proposed scheme is used to select a subset of transmit antennas and allocate proper power for the selected antennas subjected...
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