Performance Enhanced Efficient Precoder Design with Power Allocation for Multiuser MIMO Downlinks
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概要
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This paper investigates a preprocessing technique for a multiuser MIMO downlink system. An efficient joint precoder design with adaptive power allocation is proposed by adopting the channel-diagonalization technique and the minimum mean square error (MMSE) criterion. By exploiting an MMSE-based decoder, we propose an iterative algorithm to design the precoder with further derived closed-form solutions for implementing adaptive power allocation. Simulation results verify the effectiveness of our proposed approach. Compared with conventional benchmark schemes, they show that our proposal matches the performance but with reduced computational complexity.
著者
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Nakamura Hideo
Department Of Cardiology Kyoto Prefectural Yosanoumi Hospital
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Xu Wei
National Mobile Communications Research Laboratory (ncrl) Southeast University
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XU Wei
National Mobile Communications Research Laboratory, Southeast University
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CAO Yuan
School of Electronics and Information Engineering, State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University
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