Time Switching Protocol for Multi-Antenna SWIPT Systems
| Autor: | Hoon Lee, Sangwon Hwang, Inkyu Lee, Seowoo Kang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Computer science
business.industry 010401 analytical chemistry Transmitter 020206 networking & telecommunications 02 engineering and technology 01 natural sciences 0104 chemical sciences 0202 electrical engineering electronic engineering information engineering Electronic engineering Maximum power transfer theorem Wireless Antenna (radio) business Energy (signal processing) Decoding methods Computer Science::Information Theory |
| Zdroj: | WCNC |
| DOI: | 10.1109/wcnc45663.2020.9120833 |
| Popis: | In this paper, we investigate simultaneous wireless information and power transfer (SWIPT) where a multi-antenna transmitter conveys information and energy simultaneously to a multi-antenna receiver equipped with time switching (TS) circuits for an energy harvesting (EH) mode and an information decoding (ID) mode. In contrast with conventional uniform TS (UTS) structure where all the receive antennas at the receiver apply a single TS circuit, to improve the SWIPT performance, we suggest a general dynamic TS (DTS) receiver architecture which consists of an individual TS circuit for each antenna. We aim to analyze the achievable rate-energy (R-E) tradeoff of the DTS system by jointly optimizing the covariance matrices at the transmitter and the time durations for the EH and the ID modes of the receive antennas. To determine the boundary points of the R-E region, we suggest the globally optimal algorithm for the rate maximization problem via convex optimization techniques. Numerical examples verify the efficacy of the proposed DTS over conventional UTS methods. |
| Databáze: | OpenAIRE |
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