Toward Efficient Integration of Information and Energy Reception
Autor: | George K. Karagiannidis, Panagiotis D. Diamantoulakis, Koralia N. Pappi, Sami Muhaidat, Paschalis C. Sofotasios, Sotiris A. Tegos |
---|---|
Přispěvatelé: | Tampere University, Research group: Wireless Communications and Positioning, Electrical Engineering |
Rok vydání: | 2019 |
Předmět: |
Optimization problem
Multicast business.industry Computer science 213 Electronic automation and communications engineering electronics 020302 automobile design & engineering 020206 networking & telecommunications Context (language use) 02 engineering and technology Broadcasting (networking) 0203 mechanical engineering 0202 electrical engineering electronic engineering information engineering Electronic engineering Wireless Maximum power transfer theorem Electrical and Electronic Engineering business Energy harvesting Energy (signal processing) |
Zdroj: | IEEE Transactions on Communications. 67:6572-6585 |
ISSN: | 1558-0857 0090-6778 |
DOI: | 10.1109/tcomm.2019.2916831 |
Popis: | One of the major goals of emerging wireless systems is to prolong the lifetime of wireless communication devices. To this end, this contribution evaluates and optimizes the performance of simultaneous wireless information and power transfer (SWIPT) with an integrated energy and information receiver, which has the advantage of low complexity and energy cost. A tractable expression for the achievable rate is first derived, which is subsequently used to quantify the achievable harvested energy-rate region for the two fundamental SWIPT protocols, namely, power-splitting (PS) and time-switching (TS). In this context, the joint harvested energy-rate outage probability is then defined and minimized for a point-to-point and multicasting system, determining the optimal PS and TS factors for both linear and nonlinear energy harvesting models. In addition, a TS-based broadcasting system is dynamically optimized by maximizing the energy harvested by all users under an achievable rate threshold for each user. The formulated optimization problem is, in fact, particularly challenging due to the non-convex form of the expression for the achievable rate. Yet, an effective solution is ultimately achieved by converting this problem into a convex one. Also, respective computer simulation results corroborate the effectiveness of the proposed framework. Overall, it is shown that the offered results provide meaningful theoretical and practical insights that will be useful in the design and efficient operation of wireless powered systems. Indicatively, unlike the trend in common separated receivers, a region has been identified, where TS outperforms PS. acceptedVersion |
Databáze: | OpenAIRE |
Externí odkaz: |