A 98nW wake-up radio for wireless body area networks

Roberts, Nathan E.; Wentzloff, David D.

doi:10.1109/rfic.2012.6242302

Cited by 68 publications

(55 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…I n t h i s c a s e t h e d r a w b a c k i s t h a t t h e communication delay will increase since nodes are in the sleep mode for long periods of time. During the few recent years, WUR development has gained attention [13]- [19]. WUR can be continuously in an ultra-low-power idle mode and be able to detect wake-up signal (WUS) with very low power consumption.…”

Section: Related Workmentioning

confidence: 99%

Energy efficient UWB-WUR dual-radio solution for WBANs

Karvonen

Petäjäjärvi

Niemelä

et al. 2017

2017 11th International Symposium on Medical Information and Communication Technology (ISMICT)

View full text Add to dashboard Cite

Abstract-A dual-radio solution for wireless body area networks (WBANs) is proposed in this paper. Solution is based on the usage of wake-up receiver (WUR) and impulse radio ultra wideband (IR-UWB) technique. In the proposition, the data to the hub is transmitted using IR-UWB and the control messages back to node using WUR. Energy efficiency model has been developed to compare proposed solution's performance to a conventional duty-cycling based single radio solution. WUR design includes trade-offs between data rate, sensitivity and power consumption that are also explored in this work. Results show that the proposed solution can improve energy efficiency in WBANs which have asymmetric traffic between sensor nodes and hub in uplink and downlink direction. Keywords-energy efficiency; medical device; wake-up receiver (WUR); impulse radio ultra wideband (IR-UWB); wireless body area network (WBAN);

show abstract

Section: Related Workmentioning

confidence: 99%

Energy efficient UWB-WUR dual-radio solution for WBANs

Karvonen

Petäjäjärvi

Niemelä

et al. 2017

2017 11th International Symposium on Medical Information and Communication Technology (ISMICT)

View full text Add to dashboard Cite

show abstract

“…The WUR solutions are based on variety of different receiver architectures [7]: matched filter [11], radio frequency envelope detection (RFED) [12][13][14][15][16][17][18][19][20][21], uncertain intermediate frequency (U-IF) [22,23], sub-sampling [24,25], superregenerative oscillator (SRO) [8,9,26], and injection locking [27−29]. The design involves many tradeoffs; therefore, it is not straightforward to define, which architecture is best suited for a WUR.…”

Section: Related Work Of Wake-up Receiversmentioning

confidence: 99%

On the human body communications: wake-up receiver design and channel characterization

Petäjäjärvi

Mikhaylov

Vuohtoniemi

et al. 2016

J Wireless Com Network

View full text Add to dashboard Cite

By modulating the electric field induced to a human body, it is possible to transfer data wirelessly using the body as a transmission medium. This method is referred to as human body communication (HBC), which has multiple advantages in comparison with the traditional radio frequency (RF) communication. First, it alleviates the traffic load from the radio channels, which are becoming more and more congested, as the number of connected wireless devices increases rapidly. Second, HBC can potentially provide higher security than traditional RF communication since the electric field stays in the vicinity of a human body, which makes eavesdropping more challenging. Third, the attenuation in the HBC frequency band is lower than in bands used by the other radio technologies for wireless body area networks. To improve energy efficiency in HBC, one approach is to utilize a wake-up receiver (WUR). The WUR is continuously listening for a pre-defined wake-up signal, which activates the other electric circuitry (e.g., sensing, processing, and communication). The use of WURs can significantly reduce the energy consumption and increase the lifetime of the sensing applications. In this work, we propose a superregenerative WUR solution which employs self-quenching and loose synchronization method and operating at sufficiently low (1.25 kbps) data rate in order to obtain high sensitivity while keeping the energy consumption low. This enables to achieve sensitivity of −97 dBm for 10 −3 bit error rate while consuming only 40 μW. The details of the design and the performance evaluation results of the proposed solution are in the paper. Also, the paper reports the results of the practical measurements characterizing the impact of the electrode location on the path loss in an HBC channel. The presented results show that the proposed system can potentially enable communication between two any points on the body with low transmit power.

show abstract

“…The state-of-the-art on the radio energy powered radios today is well illustrated by Figure 1 in [31]. Accordingly, to enable wireless energy transfer, the power of the received radio signal should be above −30 dBm.…”

Section: Technical Limitations Of Wireless Energy Transfermentioning

confidence: 99%

Smart home gateway system over Bluetooth low energy with wireless energy transfer capability

Galinina

Mikhaylov²,

Andreev

et al. 2015

J Wireless Com Network

View full text Add to dashboard Cite

As billions of sensors and smart meters connect to the Internet of Things (IoT), current wireless technologies are taking decisive steps to ensure their sustainable operation. One popular IoT scenario features a smart home service gateway, which becomes the central point of user's home environment facilitating a multitude of tasks. Given that most IoT devices connected to residential gateway are small-scale and battery-powered, the key challenge is to extend their lifetime without recharging/replacing batteries. To this end, a novel radio technology named Bluetooth low energy (BLE) has recently been completed to enable energy-efficient data transfer. Another inspiring innovation is the capability of sensors to harvest wireless energy in their local environment. In this work, we envision a scenario where many in-home sensors are communicating with a smart gateway over the BLE protocol, while at the same time harvesting RF energy transmitted from the gateway wirelessly via a dedicated radio interface. We thoroughly investigate performance limitations of such wireless energy transfer interface (WETI) with dynamic analytical model and with important practical considerations. Our methodology delivers the upper bound on WETI operation coupled with BLE-based communication, which characterizes ultimate system performance over the class of practical radio and energy resource management algorithms.

show abstract

A 98nW wake-up radio for wireless body area networks

Cited by 68 publications

References 5 publications

Energy efficient UWB-WUR dual-radio solution for WBANs

Energy efficient UWB-WUR dual-radio solution for WBANs

On the human body communications: wake-up receiver design and channel characterization

Smart home gateway system over Bluetooth low energy with wireless energy transfer capability

Contact Info

Product

Resources

About