An 863–870 MHz spread-spectrum FSK transceiver design for wireless sensor

Trabelsi, Hafedh; Bouzid, Ghazi; Derbel, Faouzi; Masmoudi, Mohamed

doi:10.1016/j.mejo.2009.11.003

Cited by 8 publications

(4 citation statements)

References 11 publications

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“…This shows that this demodulator is more efficient for our receiver than other demodulators which are already studied like the zero crossing BFSK demodulator (the BER curve function of (Eb/N0) is presented in Fig. 17) [9], correlating BFSK detector and Arctangent differentiated demodulator [2]. In this study, we focused mainly on designing the different blocks of a Cross-differentiate-multiplier (CDM) BFSK demodulator.…”

Section: The Subtractormentioning

confidence: 96%

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An FSK Demodulator Design for RF Wireless Sensor Applications Using Zigbee Protocol

Neifar¹,

Trabelsi²,

Masmoudi³

2014

IJEEE

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In this paper, transistor-level simulations of a detector called "cross-differentiate-multiplier demodulator (CDM)" are presented. This detector, which uses three blocks (a differentiator, a multiplier and a subtractor), is able to demodulate a received bit sequence, that was transmitted using a frequency-shift keying modulation scheme, with a bit rate equal to 20kbps. The application of this detector will be in a wireless sensor receiver operating in the 863-870MHz ISM band. In this sensor, a frequency hopping spread spectrum is used as modulation technology and Zigbee (IEEE 802.15.4) as the communication protocol. Design is performed using 0.35µm CMOS technology and a 3V supply. A comparison between the performances of different architectures studied, mainly in terms of BER, is presented at the end of this document.

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Section: The Subtractormentioning

confidence: 96%

“…Zigbee specifications structures promote zero IF or low IF (IF<10MHz) due to the extremely short preamble access code. Also the hardware minimization can be achieved by using a direct conversion (zero-IF) architecture, which eliminates the image-reject filter and other IF components, enabling a monolithic transceiver [2].…”

Section: Receiver Architecturementioning

confidence: 99%

An FSK Demodulator Design for RF Wireless Sensor Applications Using Zigbee Protocol

Neifar¹,

Trabelsi²,

Masmoudi³

2014

IJEEE

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“…The use of CMOS technology in healthcare implanted devices is justified since the principal challenge is the minimization of the energy consumption in the sensor nodes in order to integrate the digital and the analog parts together on the same chip. That's why the architecture of the RF wireless sensors, modulation scheme and parameters optimization of different blocks of the transceiver was subjects of many studies and researches as part of the low power consumption challenge [9]. Linear Frequency Modulation (LFM) is widely used in radars, but it has not been yet used for implanted sensor networks in the human body using the MICS band.…”

Section: Astesj Issn: 2415-6698mentioning

confidence: 99%

“…Linear Frequency Modulation (LFM) signal or linear chirp modulation signal is considered as a form of spread spectrum technique for wireless communications. Since 1940 chirp modulation has been widely used in radars communication systems because it has the property of pulse compression [9]. LFM has been chosen because it presents performances in terms of distortion, rejection of interference and allows a low power implementation [10].…”

Section: Mathematical Background Associated With Lfmmentioning

confidence: 99%

A Novel MICS Receiver with FSK Dual Band Demodulator

Benali¹,

Bouzid²,

Trabelsi³

2018

Adv. sci. technol. eng. syst. j.

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A low-complexity dual-band chirp FSK, direct conversion receiver is described in this paper. The receiver is dedicated to be used in the transceiver unit of a medical implantable wireless sensor. The system uses the RF band between 402 and 405 MHz. Two sub-bands frequencies employing chirped pulses are assigned for both binary information. The novelty of this work is the use of a Binary FSK LFM modulator, a direct conversion receiver and a simple and low power non-coherent BFSK envelope detection demodulator. Receiver performances are evaluated for all the input power dynamic range. Receiver front-end parameters are optimized using harmonic balance simulation. In order to improve receiver sensitivity, a low pass filter with controllable bandwidth between 40 and 300 KHz is used to avoid in-band interference. The receiver is able to achieve a noise figure of 5.5 dB, a receiver sensitivity of-93 dBm and a maximum data rate of 100Kbps. The simulated IIP3 and P-1dB are 12.6 dBm and 22.1 dBm respectively. A simple non coherent binary dual band FSK demodulator was used which is based on an envelope detector, integrate & dump, a sampling & hold and a liming circuit. The receiver was co-simulated with the dual band non coherent demodulator. The proposed receiver has a sensitivity of-93 dBm and a BER less than 10-3 .

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