IEEE Transactions on Microwave Theory and Techniques · 2018 · 46 citations · 17 references
EngineeringPower ControlSimultaneous Wireless InformationAsk Modulation PerformanceCommunication EngineeringAdaptive ModulationInternet Of ThingsModulation TechniqueFixed Error RateElectrical EngineeringAwgn ChannelAsk ModulationWireless Power TransmissionMultiplexingComputer EngineeringSignal ProcessingDual-purpose HardwareModulation CodingChannel Access Method
A lot of small sensors are deployed in Internet of Things applications. Simultaneous wireless information and power transfer (SWIPT) is a solution to avoid a large amount of batteries, while exchanging information with the sensors. Combining both energy harvesting and information receiving in dual-purpose hardware lowers power consumption while also decreasing sensor size. Biased amplitude shift keying (ASK) is introduced as a solution for the SWIPT modulation technique. In particular, the design of enhanced biased ASK modulation in case of an additive white Gaussian noise channel is analyzed in this paper. Novel formulas for symbol error rate are derived, while improvements of the modulation scheme are proposed based on measurements, taking rectifier nonlinearity into account and resulting in reducing the transmitted power by 14 dB for fixed error rate.
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