An ultra low power QPSK receiver based on super-regenerative oscillator with a novel digital phase detection technique

Ibrahim, Ghada H.; Hafez, A.; Khalil, A. H.

doi:10.1016/j.aeue.2013.05.008

Cited by 10 publications

(3 citation statements)

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“…On the other hand, the Phase Shift Keying (PSK) modulation scheme requires coherent detection, which increases the circuit consumption and complexity. OOK has the advantage comparing to PSK and FSK since it is suitable for envelope detection receivers architecture [3]. As presented in [2], OOK modulation based design has the advantage over FSK in terms of power consumption because it is suitable for simple superregenerative [4] and envelope detection [5] architectures.…”

Section: Introductionmentioning

confidence: 99%

Frequency-to-amplitude converter based FSK receiver for ultra-low power transceivers

Zgaren

2014

2014 IEEE 12th International New Circuits and Systems Conference (NEWCAS)

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This paper presents a frequency-to-amplitude conversion circuit designed for ultra-low power RF receiver in ISM 902-928 MHz which is intended to integrate implantable devices. The presented circuit, which represents the reception part of a new RF FSK transceiver, is based on injection locking scheme. This building block plays an important role in making the RF transceiver energy-efficient which leads to reduce hardware complexity without using accurate local oscillator and I/Q signal path. The implemented circuit is simulated using Advanced Design System with FSK modulated signal at 915 MHz carrier frequency. The simulation results show -67 dBm sensitivity for 3 Mbps data rate. The power consumption is found to be 250 µW from 1.2 V at 27 °C.

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Section: Introductionmentioning

confidence: 99%

Frequency-to-amplitude converter based FSK receiver for ultra-low power transceivers

Zgaren

2014

2014 IEEE 12th International New Circuits and Systems Conference (NEWCAS)

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“…Digital frequency modulations such as Frequency Shift Keying (FSK) are commonly applied in wireless technologies (Ibrahim, Hafez, & Khalil, 2013) (Peng, Lin, & Chao, 2013), satellite communications (VEŘTÁT & MRÁZ, 2013), power lines communications (PLC) (Ouahada, 2014), mobile communications (Karabulut, Ozdemir, & Ilhan, 2015), spread spectrum systems (Neifar, Trabelsi, Bouzid, & Masmoudi, 2012) and biomedical applications (Wang, Chen, Lin, & Lee, 2014). Among the reported demodulators, methods to demodulate Binary Frequency Shift Keying (FSK) signals with the aid of correlators are of particular interest in this paper.…”

Section: Introductionmentioning

confidence: 99%

New digital demodulator with matched filters and curve segmentation techniques for BFSK demodulation: FPGA implementation and results

Torres

Hernandez

Habermann³

2016

ing.inv.

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The current article addresses digital implementation of new demodulation schemes for Binary Frequency Shift Keying (BFSK), and has two main objectives: of the description of the performance of the new processing method and its implementation on FPGA technology. Performance is analyzed by means of the total number of demodulated bits free of errors without noise, and by means of the BER parameter. The proposed method exhibits to have better performance than the solutions reported. Additionally, the solution obtained shows lower complexity than reported methods in regard to the total number of adders and multipliers. The implementation is described for FPGA systems, and the System Generator software is used for testing and simulating the results.Keywords: Curve segmentation, digital demodulation, BFSK, FPGA. RESUMENEl presente artículo aborda la implementación digital de un nuevo esquema de demodulación para la modulación Binary Frequency Shift Keying (BFSK), y tiene dos objetivos principales: la descripción del desempeño del nuevo método, así como su implementación con la tecnología FPGA. El desempeño se analiza teniendo en cuenta el total de bits demodulados libre de errores en un ambiente sin ruido, y por medio del parámetro BER. El método propuesto exhibe un mejor desempeño en cuanto a estos parámetros en comparación con otras soluciones reportadas. Adicionalmente, la solución obtenida muestra menor complejidad que las reportadas en la literatura científica, teniendo en cuenta el total de sumadores y multiplicadores. La implementación del demodulador propuesto se desarrolla sobre un sistema FPGA, y con el empleo de la aplicación System Generator se obtienen los resultados de prueba y simulación.Palabras clave: Segmentación de curvas, demodulación digital, BFSK, FPGA.

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“…Frequency Shift Keying (FSK) is a digital modulation format with applications in wireless technologies (Ibrahim et al, 2013) (Peng et al, 2013), satellite communications (VEŘTÁT, MRÁZ, 2013), power lines communications (PLC) (Ouahada, 2014), mobile communications (Karabulut, 2015), spread spectrum systems (Neifar, 2012) and biomedical applications (Wang, 2014). Various configurations of circuitry have previously been reported for BFSK demodulators.…”

Section: Introductionmentioning

confidence: 99%

New digital demodulator with matched filters and curve segmentation techniques for BFSK demodulation: Analytical description

Torres¹,

Hernandez²,

Habermann³

2015

ing.inv.

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The present article relates, in general, to digital demodulation of Binary Frequency Shift Keying (BFSK). The objective of the present research is to obtain a new processing method for demodulating BFSK-signals in order to reduce hardware complexity in comparison with other methods reported. The solution proposed here makes use of the matched filter theory and curve segmentation algorithms. This paper describes the integration and configuration of a Sampler Correlator and curve segmentation blocks in order to obtain a digital receiver for a proper demodulation of the received signal. The proposed solution is shown to strongly reduce hardware complexity. In this part, a presentation of the proposed solution regarding the analytical expressions is addressed. The paper covers in detail the elements needed for properly configuring the system. In a second article the implementation of the system for FPGA technology and the simulation results in order to validate the overall performance are presented. Keywords:Matched filters, curve segmentation, digital demodulation, BFSK, FPGA. RESUMENEl presente artículo está relacionado con la demodulación digital de la señal Binary Frequency Shift Keying (BFSK). El objetivo de la investigación es en la obtención de un nuevo método de procesamiento para demodular señales BFSK, el cual presenta menos complejidad en hardware que los reportados hasta la fecha. El sistema propuesto hace uso de la teoría de filtros adaptados y de los algoritmos de segmentación de curvas. El artículo describe la integración y configuración de un bloque de correlador por muestreo con un bloque de segmentación de curvas con el objetivo de obtener un receptor digital para demodular apropiadamente la señal recibida. La solución propuesta reduce considerablemente la complejidad en hardware. En esta parte se expone el sistema abordando de forma analítica las expresiones que lo describen. El artículo aborda en detalle los elementos necesarios para la configuración del sistema. En una segunda parte se muestra la implementación del sistema en FPGA así como los resultados de simulación que validan el desempeño del sistema.Palabras clave: Filtros adaptados, segmentación de curvas, demodulación digital, BFSK, FPGA.

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An ultra low power QPSK receiver based on super-regenerative oscillator with a novel digital phase detection technique

Cited by 10 publications

References 1 publication

Frequency-to-amplitude converter based FSK receiver for ultra-low power transceivers

Frequency-to-amplitude converter based FSK receiver for ultra-low power transceivers

New digital demodulator with matched filters and curve segmentation techniques for BFSK demodulation: FPGA implementation and results

New digital demodulator with matched filters and curve segmentation techniques for BFSK demodulation: Analytical description

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