On the performance of ad hoc networks with beamforming antennas
MobiHoc '01 Proceedings of the 2nd ACM international symposium on Mobile ad hoc networking & computing
Phased Array and Adaptive Antenna Transceivers in Wireless Sensor Networks
DSD '04 Proceedings of the Digital System Design, EUROMICRO Systems
Protocols and Architectures for Wireless Sensor Networks
Protocols and Architectures for Wireless Sensor Networks
On Designing MAC Protocols for Wireless Networks Using Directional Antennas
IEEE Transactions on Mobile Computing
A prototype low-cost wakeup radio for the 868 MHz band
International Journal of Sensor Networks
Simple wake-up radio prototype
Proceedings of the 6th Workshop on Hot Topics in Embedded Networked Sensors
Journal of Intelligent and Robotic Systems
ACM Transactions on Sensor Networks (TOSN)
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Power consumption is a critical issue in many wireless sensor network scenarios where network life expectancy is measured in months or years. Communication protocols typically rely on synchronous operation and duty-cycle mechanisms to reduce the power usage at the cost of decreased network responsiveness and increased communication latency. A low-power radio-triggered device can be used to continuously monitor the channel and activate the node for incoming communications, allowing purely asynchronous operations. To be effective, the power consumption of this wake-up device must be on the order of tens of microwatts since this device is always active. This paper presents our first attempt at designing such a low-power receiver. Very few realizations of wake-up devices are reported in the literature and none presents power dissipation below 40 μW. Our design implements a complete wake-up device and initial results indicate an average power consumption below 20 μW, which is more than 2 times lower than other reported devices.