Ultra-low Power Wake-up Receivers for Wireless Sensor Networks

Ultra-low Power Wake-up Receivers for Wireless Sensor Networks

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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 wake-up 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 qactiveq RFID, where the tag listens in standby mode until queried by a reader.First, the pattern generator is programmed to output a particular pseudo-noise ( PN) code sequence of length N, wait at least N cycles, and then repeat the ... The files can then be loaded in Matlab and run through the baseband off-line.

Title:Ultra-low Power Wake-up Receivers for Wireless Sensor Networks
Publisher:ProQuest - 2008

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