Abstract
In simultaneous wireless information and power transfer (SWIPT) systems, dedicated energy signals only convey wireless energy, but not information. For this reason, the energycarring signals in the SWIPT can be pre-determined in advance and is shared among communication nodes. By exploiting this nature, this paper designs the optimal transmit beamforming vectors for the multiple-input single-output SWIPT interference channel with signal cooperation (IFC-SC), where the energycarrying signal waveforms are known to transmitters and receivers. Specifically, we aim to identify the optimal tradeoff between the information rate and the harvested energy. To this end, an information rate maximization problem is formulated under minimum required harvested energy constraint, which is non-convex in general. To solve the problem, a new parameterization technique is introduced, and we can decouple the original problem into two subproblems, which yields closed-form beamforming solutions by addressing the line search method for the parameter. Simulation results confirms that the proposed optimal IFC-SC beamforming vectors outperform conventional SWIPT IFC systems.
Original language | English |
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Title of host publication | 2016 IEEE 84th Vehicular Technology Conference, VTC Fall 2016 - Proceedings |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
ISBN (Electronic) | 9781509017010 |
DOIs | |
Publication status | Published - 2017 Mar 17 |
Event | 84th IEEE Vehicular Technology Conference, VTC Fall 2016 - Montreal, Canada Duration: 2016 Sep 18 → 2016 Sep 21 |
Other
Other | 84th IEEE Vehicular Technology Conference, VTC Fall 2016 |
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Country | Canada |
City | Montreal |
Period | 16/9/18 → 16/9/21 |
ASJC Scopus subject areas
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering