Energy-Efficient Precoder Design for MIMO Wiretap Channels
Energy-Efficient Precoder Design for MIMO Wiretap Channels
复制标题
MIMO 窃听通道的节能预编码器设计
DOI:
10.1109/lcomm.2014.2331273
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发表时间:
2014-07
期刊:
影响因子:
--
通讯作者:
lvxi yang
中科院分区:
文献类型:
--
作者:
haiyang Zhang;yongming Huang;shidang li;lvxi yang
In this letter, we study energy-efficient precoder design in a three-node MIMO wiretap channel. Different from previous works in this area that mainly focus on secrecy rate maximization or power minimization problems, here, we aim to maximize the energy efficiency (EE) of the system subject to the secret rate and transmit power constraints, which is a nonconvex optimization and hard to tackle. To solve it, we first transform it into an equivalent parameterized polynomial subtractive form and then approximate the nonconvex equivalent problem into a convex optimization problem by means of Taylor series expansion. Based on that, an iterative algorithm with proved convergence is proposed, and this algorithm is also extended to an imperfect-channel-state-information case. Numerical results show that the proposed algorithm outperforms traditional design methods in terms of EE.
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DOI:
10.1109/icassp.2013.6638189
发表时间:
2013-05
期刊:
2013 IEEE International Conference on Acoustics, Speech and Signal Processing
影响因子:
--
作者:
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通讯作者:
C. Comaniciu;H. Vincent Poor;Ruolin Zhang
DOI:
10.1109/wcnc.2010.5506527
发表时间:
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期刊:
2010 IEEE Wireless Communication and Networking Conference
影响因子:
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通讯作者:
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影响因子:
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作者:
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