Nanowatt Wake-Up Radios: Discrete-Components and Integrated Architectures

Elgani, Alessia Maria; Magno, Michele; Renzini, Francesco; Perilli, Luca; Scarselli, Eleonora Franchi; Gnudi, Antonio; Canegallo, R.; Ricotti, G.; Benini, Luca

doi:10.1109/icecs.2018.8617961

Cited by 7 publications

(11 citation statements)

References 15 publications

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“…The WuRx hardware is generally based on special electronic circuits designed to reduce power consumption without reduction in sensitivity, reliability, and data rate. The hardware design of WuRx can be based on integrated complementary metal-oxide semiconductor (CMOS) circuits [ 21 , 22 , 23 ], where they show a complicated fabrication process that may need a longer development time period within expensive procedures, in contrast to circuits based on COTS components that are usually cheaper in setup, maintenance, expansion, and development. In order to save required energy in listening mode, the WuRx based on COTS uses generally passive components for the continuous listening to the radio channel to activate the MCU [ 24 ].…”

Section: Related Workmentioning

confidence: 99%

Analytical and Experimental Performance Analysis of Enhanced Wake-Up Receivers Based on Low-Power Base-Band Amplifiers

Schott

Fromm

Bouattour

et al. 2022

Sensors

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With the introduction of Internet of Things (IoT) technology in several sectors, wireless, reliable, and energy-saving communication in distributed sensor networks are more important than ever. Thereby, wake-up technologies are becoming increasingly important as they significantly contribute to reducing the energy consumption of wireless sensor nodes. In an indoor environment, the use of wireless sensors, in general, is more challenging due to signal fading and reflections and needs, therefore, to be critically investigated. This paper discusses the performance analysis of wake-up receiver (WuRx) architectures based on two low frequency (LF) amplifier approaches with regard to sensitivity, power consumption, and package error rate (PER). Factors that affect systems were compared and analyzed by analytical modeling, simulation results, and experimental studies with both architectures. The developed WuRx operates in the 868 MHz band using on-off-keying (OOK) signals while supporting address detection to wake up only the targeted network node. By using an indoor setup, the signal strength and PER of received signal strength indicator (RSSI) in different rooms and distances were determined to build a wireless sensor network. The results show a wake-up packets (WuPts) detection probability of about 90% for an interior distance of up to 34 m.

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Section: Related Workmentioning

confidence: 99%

Analytical and Experimental Performance Analysis of Enhanced Wake-Up Receivers Based on Low-Power Base-Band Amplifiers

Schott

Fromm

Bouattour

et al. 2022

Sensors

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“…For this reason, communications systems have to reduce their power consumption since they strongly affect the overall system power consumption. One possible solution is to use Wake-Up Radio (WUR) [47], an always-on circuit capable of recognizing an address/keyword in the received bitstream as well as waking up the system. We designed the 8-bit correlator shown in Figure 11.…”

Section: Ultra-low-power Applicationsmentioning

confidence: 99%

A Fully Programmable eFPGA-Augmented SoC for Smart Power Applications

Renzini

Mucci

Rossi

et al. 2020

IEEE Trans. Circuits Syst. I

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This paper proposes a reconfigurable System-on-Chip (SoC) for smart power applications. The system is composed of an ultra-low-power microcontroller for standard software programmability, coupled to an embedded-FPGA (eFPGA) to perform control-driven applications and lightweight digital signal processing, at a lower power consumption and higher responsiveness than with processor-based execution. To the best of the authors' knowledge this is the first heterogeneous reconfigurable SoC targeting smart power applications. The SoC targets BCD technologies integrating Bipolar, CMOS and DMOS devices, typically featuring a small amount of metal layers when compared to traditional CMOS technologies. The added value of the proposed system is that the digital system is fully synthesizable, since the eFPGA is based on a soft-core approach. The paper presents the results of integrating an eFPGA with a computational capability of 1k equivalent gates in STMicroelectronics 90 nm BCD technology featuring five metal layers and high-k transistors. We benchmarked our architecture on a wide range of applications relevant to the smart power domain. eFPGA integration in SoCs introduces a 20-27% area overhead, but has a straightforward benefit in terms of energy consumption which proves reduced from about 10× to 800×. In terms of latency, the eFPGA implementation allows a gain from 8× to 145× comparing the pure cycles count.

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“…In the ILO based wake-up radio receiver, the local oscillator locks on the injection signal which is the received wake-up message transmitted by FSK (Frequency Shift Keying) modulation. The oscillator locks on the received signal and demodulates the FSK signal which is transformed into an OOK (On-Off Keying) one [4].…”

Section: State Of the Artmentioning

confidence: 99%

High Efficiency Rectifier for a Quasi-Passive Wakeup Radio

Fumtchum

Huţu

Tsafack

et al. 2019

2019 International Symposium on Signals, Circuits and Systems (ISSCS)

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The ubiquity of wireless sensor networks (WSN), as well as the rapid development of the Internet of Things (IoT), impel new approaches to reduce the energy consumption of the connected devices. The wake-up radio receivers (WuRx) were born in this context to reduce as much as possible the energy consumption of the radio communication part. This article aims at proposing a lowcost, high-efficiency rectifier to improve a quasi-passive WuRx performance in terms of communication range. By optimizing the wideband matching circuit and the proposed rectifier's load impedance, the sensitivity was increased by 5 dB, corresponding to an increase of the communication range (13 meters in free space). I.

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Nanowatt Wake-Up Radios: Discrete-Components and Integrated Architectures

Cited by 7 publications

References 15 publications

Analytical and Experimental Performance Analysis of Enhanced Wake-Up Receivers Based on Low-Power Base-Band Amplifiers

Analytical and Experimental Performance Analysis of Enhanced Wake-Up Receivers Based on Low-Power Base-Band Amplifiers

A Fully Programmable eFPGA-Augmented SoC for Smart Power Applications

High Efficiency Rectifier for a Quasi-Passive Wakeup Radio

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