A 1V wireless transceiver for an ultra low power SoC for biotelemetry applications

Wong, Alan; Kathiresan, G.; Chan, Chiu-Hsien; Eljamaly, O.; Burdett, Alison

doi:10.1109/esscirc.2007.4430262

Cited by 25 publications

(14 citation statements)

References 4 publications

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“…At the physical layer, we at Toumaz have innovated an ultra-low-power radio [13] that provides a proprietary 50 kbps wireless link over a distance of 2-10 metres, and consumes 2.7 mW at a transmit strength of −7 dBm (compare this to the CC2420 radio [1] in MicaZ that consumes 22.5 mW for −7 dBm output). At the datalink layer, energy can be saved by intelligent medium access control (MAC) protocols that duty-cycle the radio, i.e.…”

Section: Introductionmentioning

confidence: 99%

Adapting Radio Transmit Power in Wireless Body Area Sensor Networks

Xiao

Sivaraman

Burdett³

2008

Proceedings of the 3rd International ICST Conference on Body Area Networks

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Emerging body-wearable devices for continuous health monitoring are severely energy constrained and yet required to offer high communication reliability under fluctuating channel conditions. This paper investigates the dynamic adaptation of radio transmit power as a means of addressing this challenge. Our contributions are three-fold: we present empirical evidence that wireless link quality in body area networks changes rapidly when patients move; fixed radio transmit power therefore leads to either high loss (when link quality is bad), or wasted energy (when link quality is good). This motivates dynamic transmit power control, and our second contribution characterises the off-line optimal transmit power control that minimises energy usage subject to lower-bounds on reliability. Though not suited to practical implementation, the optimal gives insight into the feasibility of adaptive power control for body area networks, and provides a benchmark against which practical strategies can be compared. Our third contribution is to develop simple and practical on-line schemes that trade-off reliability for energy savings by changing transmit power based on feedback information from the receiver. Our schemes offer on average 9-25% savings in energy compared to using maximum transmit power, with little sacrifice in reliability, and demonstrate adaptive transmission power control as an effective technique for extending the lifetime of wireless body area sensor networks.

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Section: Introductionmentioning

confidence: 99%

Adapting Radio Transmit Power in Wireless Body Area Sensor Networks

Xiao

Sivaraman

Burdett³

2008

Proceedings of the 3rd International ICST Conference on Body Area Networks

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“…In traditional IC design, designers have attempted to reduce system power consumption by reducing the system clock frequency or by switching off redundant signal toggles [3]. The former method can reduce system power consumption, but the system processing speed is reduced at the same time.…”

Section: Introductionmentioning

confidence: 99%

Low-power design and application based on CSD optimization for a fixed coefficient multiplier

Liu

Yuan

2011

Sci. China Inf. Sci.

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This paper presents a low-power design for a fixed coefficient multiplier, based on the canonic signed digit (CSD) method. The proposed technology overcomes the defects of the general CSD method by reducing system power and area substantially without additional logic. The theoretical basis and a design method are explained in detail in this paper. Our design technology was used to optimize a radio-frequency module. FPGA test results show that logic utilization is reduced by 25%, the total number of registers used is reduced by 23.02%, and the total block memory bits utilization is reduced by 20%. These results show that the proposed low-power design is an effective method.Keywords canonic signed digit optimization; coefficient of multiplication; system power; system area; logic cell number; FPGA test results CitationLiu H X, Yuan B. Low-power design and application based on CSD optimization for a fixed coefficient multiplier.

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“…More aggressively, a 1V RF transceiver for BSN applications is presented in [3] . ECO sensor node, developed at University of California, is an ultra-wearable, low power, and expandable wireless sensor node [4] .…”

Section: ⅱ Related Workmentioning

confidence: 99%

Accurate and Energy Efficient ECG Analysis Method for ECG Monitoring System

Zeng¹,

Lee

Chung

et al. 2012

The Journal of Korean Institute of Communications and Informati

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This paper proposes an energy efficient ECG monitoring system by putting some intelligence on the sensor node to reduce the number of transmissions. The sensor node is mostly put into the processing mode and just connects the base station when necessary. Therefore, the transmission energy is greatly reduced while the energy for processing is increased a little bit. Our proposed ECG analysis method classifies ECG cycles by computing the Euclidean distance between the sensed ECG cycle and the reference ECG cycle. This work is a detailed and full explanation of our former work. Extended experimental results show that the proposed trade is very effective in saving energy and the Euclidean distance based classification method is accurate. Furthermore, the PowerTOSSIM energy simulation method is also demonstrated as very accurate in evaluating the energy consumption of the sensor node in our application scenario.

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A 1V wireless transceiver for an ultra low power SoC for biotelemetry applications

Cited by 25 publications

References 4 publications

Adapting Radio Transmit Power in Wireless Body Area Sensor Networks

Adapting Radio Transmit Power in Wireless Body Area Sensor Networks

Low-power design and application based on CSD optimization for a fixed coefficient multiplier

Accurate and Energy Efficient ECG Analysis Method for ECG Monitoring System

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