On the Joint Optimal Power Allocation for DF Relaying and Beamforming Communication Systems
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概要
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This paper considers the power allocation (PA) problem for three-node decode-and-forward (DF) relay communication systems, where the aggregate transmit power constraint is imposed on the source and the relay and the optimization target is to maximize the system's instantaneous information rate. Since the relay is equipped with multiple antennas, the receiver and transmitter beamforming strategies are generally adopted. In this paper, we start by proposing a closed-form solution for the frequency-flat (FF) fading environment, then give a bisection algorithm with low complexity to obtain an optimal solution for the frequency-selective (FS) fading scenario. Finally, simulations validate the proposed methods.
著者
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Zhao Hua-an
Department Of Computer Science And Electrical Engineering Kumamoto University
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Liu Chen
School Of Electronic Sci. And Engineering Nanjing Univ. Of Posts And Telecommunications
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LU Feng
School of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications
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