Symbol Synchronisation Implementation for Low-Power RF Communication in Wireless Sensor Networks

MacEwen, N.C.; Crockett, Louise H.; Pfann, E.; Stewart, Robert W.

doi:10.1109/acssc.2005.1599787

Cited by 4 publications

(5 citation statements)

References 2 publications

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“…Manchester coding is an example of this, which is obtained by taking the XOR of the data bit and the clock signal. Synchronization technique based on Manchester coding for wireless sensor network has been proposed in [7]. In [7], an edge detector and a counter have been used to detect the bits.…”

Section: Fig 2 Methods For Synchronization In Receivermentioning

confidence: 99%

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An Ultra-low Power Symbol Detection Methodology and Its Circuit Implementation for a Wake-up Receiver in Wireless Sensor Nodes

Meher

Salimath

Halder

2012

2012 25th International Conference on VLSI Design

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An RF envelope detector (ED) and an asynchronous latching circuit have been designed for a wake-up receiver in 400 MHz MICS and 433 MHz / 915 MHz ISM band. The architecture is designed to tolerate significant process, supply-voltage and temperature variations. An alternative bit encoding technique has been used, which eliminates the need for symbol synchronization and the associated circuitry. The power consumption of the entire circuit, which is designed using 1.8 V supply voltage and 180 nm CMOS process, is limited to 43 uW during symbol detection and is limited to 34 uW when no input signal activity is present in the receiver RF front-end. For an input current swing of ±3 μA from the RF front-end, the circuit successfully detects up to a 2.5 Mbps input data rate.

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Section: Fig 2 Methods For Synchronization In Receivermentioning

confidence: 99%

“…Synchronization technique based on Manchester coding for wireless sensor network has been proposed in [7]. In [7], an edge detector and a counter have been used to detect the bits. However, an external clock is needed to run the counter.…”

Section: Fig 2 Methods For Synchronization In Receivermentioning

confidence: 99%

An Ultra-low Power Symbol Detection Methodology and Its Circuit Implementation for a Wake-up Receiver in Wireless Sensor Nodes

Meher

Salimath

Halder

2012

2012 25th International Conference on VLSI Design

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“…A local oscillator directly modulates the baseband data and an envelope detector is used to perform non-coherent downconversion at the receive side [11,12]. This system removes the need for any active components such as power-hungry mixers and PLLs in the receiver.…”

Section: B Ook Designmentioning

confidence: 99%

Towards an Integrated Design Approach to Specknets

Arvind

Elgaid

Krauss

et al. 2007

2007 IEEE International Conference on Communications

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The Research Consortium in Speckled Computing is a multidisciplinary grouping of computer scientists, electronic engineers, physicists and electrochemists with the aim of realising wireless networks of miniature programmable speck devices. Each speck is designed to be autonomous with its own rechargeable battery and combines the capabilities to sense, process data and communicate wirelessly. This review paper outlines the unique multidisciplinary approach to the design of networks of specks and how the design of energy-efficient specks should take into account the intimate interactions between the different sub-systems which make up the specks, such as the energy source, wireless communication, physical layer design and the Medium Access Control (MAC) and routing protocols.

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“…Details of the Manchester decoder are described in [7]. In the chosen implementation, a nominal oversampling ratio of 8 is used with respect to the bit period.…”

Section: Manchester Encodingmentioning

confidence: 99%

“…This is more serious as it creates two new transitions and could therefore cause an error in the decoding process. Both of these effects are expected to be more destructive when the sampling clock error is large, as a reduction in mark to space ratio while operating at the limits of the Manchester decoder may cause valid transitions to be missed [7].…”

Section: B System Simulationmentioning

confidence: 99%

Pulse Shaping for RF Communications in Wireless Sensor Networks

Crockett

MacEwen

Pfann

et al.

Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005.

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This paper evaluates the introduction of pulse shaping to RF communications between nodes in an ultra-small, wireless sensor network technology. With low power consumption crucial, and in the context of a digital transceiver which utilizes Manchester encoding to reduce the synchronization overhead, we consider the addition of pulse shaping filters to an existing on-off keyed transmission scheme. Pulse shaping is shown to reduce spectral leakage and thereby to allow the transmit power to be reduced. These evaluations are made in the context of 125mm 3 nodes transmitting over channels of up to 30cm, with potentially poor clock oscillators and limited energy storage capacity.

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Symbol Synchronisation Implementation for Low-Power RF Communication in Wireless Sensor Networks

Cited by 4 publications

References 2 publications

An Ultra-low Power Symbol Detection Methodology and Its Circuit Implementation for a Wake-up Receiver in Wireless Sensor Nodes

An Ultra-low Power Symbol Detection Methodology and Its Circuit Implementation for a Wake-up Receiver in Wireless Sensor Nodes

Towards an Integrated Design Approach to Specknets

Pulse Shaping for RF Communications in Wireless Sensor Networks

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