Ultra Low Power Wake-up Receiver with Unique Node Addressing for Wireless Sensor Nodes

dc.contributor.authorCochran, Travisen
dc.contributor.committeechairHa, Dong Samen
dc.contributor.committeememberSchaumont, Patrick R.en
dc.contributor.committeememberYang, Yalingen
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessioned2017-04-04T19:50:14Zen
dc.date.adate2012-02-10en
dc.date.available2017-04-04T19:50:14Zen
dc.date.issued2011-12-06en
dc.date.rdate2016-09-27en
dc.date.sdate2011-12-13en
dc.description.abstractPower consumption and battery life are of critical importance for medical implant devices. For this reason, devices for Wireless Body Area Network (WBAN) applications must consume very little power. To save power, it is desirable to turn off or put to sleep a device when not in use. However, a transceiver, which is the most power hungry block of a wireless sensor node, needs to listen for the incoming signal continuously. An alternative scheme, is to listen for the incoming signal at a predetermined internal, which saves power at the cost of increased latency. Another and more sophisticated scheme is to provide a wake-up receiver, which listens for the incoming signal continuously, and upon detection of an incoming signal, it wakes the primary transceiver up. A wake-up receiver is typically simple and dissipates little power to make the scheme useful. This thesis proposes a low-power wake-up receiver, which listens for a wake-up signal, identifies the target node, and wakes up the primary receiver only when that specific node is called upon. When a wake up signal is transmitted to all of the nodes on a network, our wake-up receiver allows all the nodes on a network except the targeted node to remain asleep to save power. Several wake-up receiver topologies have been proposed. This work uses a passive Cockcroft-Walton multiplier circuit as an RF envelope detector followed by a simple detector circuit. A novel serial code detector is then used to decode the pulse width modulated input signal to wake-up the designated node. A passive RF front end and simple decoding circuit reduce power consumption substantially at the cost of low sensitivity. The sensitivity of the wake-up receiver can be improved though the addition of an RF amplifier, but at the cost of increased power consumption.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-12132011-135151en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-12132011-135151/en
dc.identifier.urihttp://hdl.handle.net/10919/76909en
dc.language.isoen_USen
dc.publisherVirginia Techen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectserial code detectoren
dc.subjectwireless sensor networken
dc.subjectultra-low poweren
dc.subjectwake-up receiveren
dc.titleUltra Low Power Wake-up Receiver with Unique Node Addressing for Wireless Sensor Nodesen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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