The Technique Of Energy Harvesting From Radio Signals

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1. Introduction: The technique of energy harvesting from radio signals has received much attention in various applications in the recent time, such as radio-frequency identification systems [1] and body sensor networks with medical implants [2]. According to the 2010 wireless smart phone customer satisfaction study from J. D. Power and Associates, the iPhone received top marks in every category except for battery life. The latest report in China also reflects the same problem. Based on the data, up to 60% of the users complained that battery endurance was the greatest hurdle when using 3G services. (Daquan Feng, 2013) In recent year, a new concept of energy harvesting from wireless signal is the subject of interest of many researchers and…show more content…
We are using orthogonal frequency division multiplexing (OFDM) modulation technique for Energy harvesting and information transfer. OFDM is most efficient and noise resistant scheme of modulation in wireless communication technology. Orthogonal frequency-division multiplexing (OFDM) is a method of digital modulation in which a signal is split into several narrowband channels at different frequencies. OFDM is used in applications such as digital television and audio broadcasting, DSL Internet access, wireless networks, 3G and 4G mobile communications. (Yair, 2006) This report would throw light on the different methodology approached for the wireless energy harvesting for project. Further, it would emphasize the work done during the first semester on the project. Moreover, it would highlight the line of action to be taken in order to complete the project in the next semester. 2. Literature Review: Wireless energy harvesting is an emerging topic of interest for communication and signal processing researchers. Varshney first proposed the idea of transmitting information and energy simultaneously in [2] assuming that the receiver is able to decode information and harvest energy simultaneously from the same received signal. For the proposed receiver, in [4] the authors used a capacity-energy function to study the fundamental performance tradeoff for
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