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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Dong Wang Bo Bai Wei Chen Zhu Han |
| Copyright Year | 2015 |
| Description | Author affiliation: Dept. of Electron. Eng., Tsinghua Univ., Beijing, China (Dong Wang; Bo Bai; Wei Chen) || Dept. of Electr. & Comput. Eng., Univ. of Houston, Houston, TX, USA (Zhu Han) |
| Abstract | In this paper, the secure green communication over amplify-and-forward (AF) relaying channels is investigated by using the metric of secure energy efficiency (EE), defined as the number of bits securely delivered per unit energy consumption. We maximize the secure EE with the given maximum power and the minimum secrecy rate requirements. The difficulty of the problem comes from the nonconvexity of both the objective function and the secrecy rate constraint. Therefore, a suboptimal solution scheme, based on fractional programming, dual decomposition, and DC (difference of convex functions) programming, is addressed to solve this problem iteratively. The proposed solution scheme composed of three-layer iterations transforms the primal problem into easier subproblems at each iterative layer, such that the resulting subproblems can be solved by the corresponding optimization methods mentioned above. The simulation results demonstrate that the secure EE of the proposed scheme is superior than that obtained by the conventional schemes with a small decrease of the average secrecy rate. |
| Starting Page | 4468 |
| Ending Page | 4473 |
| File Size | 369219 |
| Page Count | 6 |
| File Format | |
| e-ISBN | 9781467364324 |
| DOI | 10.1109/ICC.2015.7249026 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-06-08 |
| Publisher Place | UK |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Relays Programming Security Linear programming Physical layer Minimization Convex functions |
| Content Type | Text |
| Resource Type | Article |
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