Ultra-Low Power Wake-Up Receivers for Wireless Sensor Networks
نویسندگان
چکیده
Ultra-Low Power Wake-Up Receivers for Wireless Sensor Networks by Nathan Michael Pletcher Doctor of Philosophy in Engineering Electrical Engineering and Computer Sciences University of California, Berkeley Professor Jan M. Rabaey, Chair The realization of truly ubiquitous wireless sensor networks (WSN) demands ultra-low power wireless communication capability. Because the radio transceiver consumes power whenever it is active, it most efficient to leave the receiver off and wake it up asynchronously only when needed. A dedicated wake-up receiver can continuously monitor the channel, listening for a wakeup signal from other nodes and activating the main receiver upon detection. By maximizing the node sleep time without compromising network latency, the use of a wake-up receiver can improve overall network performance. Wake-up receivers are also applicable in asymmetric links such as “active” RFID, where the tag listens in standby mode until queried by a reader.
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