0000000000496556

AUTHOR

J.j. Perez

showing 2 related works from this author

Solar Inexhaustible Power Source for Wireless Sensor Node

2008

Currently the appearance of really low power wireless transceivers is motivating the use of renewable energies to power embedded wireless sensor nodes in many applications. Nevertheless, energy storage and its degradation still keep on being the main issues in the design of any battery powered device. We present an autonomous power source based on a new system architecture, which uses the energy scavenging to replenish two different rechargeable energy buffers instead of the conventional single one. Combining appropriately a degradable large backup battery (Lithium-Ion) and a shorter but non degradable storage element (Supercapacitor), the lifetime of the group can be widely extended to wha…

Battery (electricity)EngineeringBackup batterybusiness.industryEmbedded systemElectrical engineeringWirelessbusinessWireless sensor networkEnergy harvestingEnergy storageSolar powerRenewable energy2008 IEEE Instrumentation and Measurement Technology Conference
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Interference excision algorithm for frequency hopping spread spectrum based on undecimated wavelet packet transform

2002

An algorithm for reducing narrowband interference effects in frequency hopping spread spectrum is presented. The method is based on the undecimated wavelet packet transform. It improves the performance obtained by other methods. Experimental results demonstrate the suitability of the algorithm.

Spread spectrumInterference excisionComputer scienceComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSComputer Science::Networking and Internet ArchitectureElectronic engineeringFrequency-hopping spread spectrumElectrical and Electronic EngineeringAlgorithmWavelet packet decompositionElectronics Letters
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