Coplanar Turbo‐FSK: A Flexible and Power Efficient Modulation for the Internet‐of‐Things

Roth, Yoann; Doré, Jean‐Baptiste; Ros, Laurent; Berg, Vincent

doi:10.1155/2018/3072890

Cited by 8 publications

(12 citation statements)

References 25 publications

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“…To answer this concern, we will be aiming at combining phase modulation to the proposed orthogonal FSK. Such a perspective can be regarded as an extension of the VLC context work [15] to introduce turbo-coding, or to the adaptation of the RF context work [16] to deal with real unipolar signal. An other perspective is to change the modulation method as the addition of a DC component lowers energy efficiency a lot.…”

Section: Discussionmentioning

confidence: 99%

Turbo-DC-FSK: Joint Turbo Coding and FSK-Based Modulation for Visible Light Communications

Miqueu

Khan

Guennec

et al. 2022

2022 Joint European Conference on Networks and Communications &Amp; 6G Summit (EuCNC/6G Summit)

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In this article, we propose and analyze a joint Turbo coding and DC-FSK modulation scheme (Turbo-DC-FSK) dedicated to visible light communications (VLC). This method is an adaptation to satisfy the VLC requirements of the Turbo-FSK technique initially developed for the long range low power Radio-Frequency context in CEA-LETI (during the PhD of Yoann Roth, in collaboration with Gipsa-lab). It requires a change in the modulation alphabet generation to get unipolar real baseband signal instead of a complex bipolar one. We propose, in this paper, to deal with real Discrete Cosine Transform (DCT) instead of complex Discrete Fourier Transform (DFT) to generate the Frequency Shift Keying (FSK) modulation alphabet. We, then, add a constant component (DC) to make the signal unipolar and positive. This scheme involves a FSK-based modulation at the transmitter side, i.e. DC-FSK, and a Turbo-decoder scheme at the receiver side, i.e. Bahl, Cocke, Jelinek and Raviv (BCJR) algorithm. Simulation results confirm that Turbo-DC-FSK can achieve around 4 dB energy gain over regular VLC state-of-theart DC-FSK modulation at a BER = 10 −4 ans at same spectral efficiency. Using λ parallel branches, a desired balance between energy efficiency and spectral efficiency is achieved.

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Section: Discussionmentioning

confidence: 99%

Turbo-DC-FSK: Joint Turbo Coding and FSK-Based Modulation for Visible Light Communications

Miqueu

Khan

Guennec

et al. 2022

2022 Joint European Conference on Networks and Communications &Amp; 6G Summit (EuCNC/6G Summit)

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“…According to (7), the decision on the transmitted frequency is made using R and phase-shifts, z i as:…”

Section: A Waveform Generationmentioning

confidence: 99%

“…From a simpler perspective, inculcation of an additional degree of freedom (DoF) in modifying the SE can either relax the constraint on the bandwidth, or a higher data-rate can be achieved for a fixed bandwidth. This flexibility could be of interest to address different demands of data-rate/EE for IoT [7].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Frequency and Phase-Shift Keying Modulation for Energy Efficient Optical Wireless Systems

Azim

Guennec

Ros

2020

IEEE Wireless Commun. Lett.

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In this letter, we introduce direct-current (DC) offset hybrid frequency and phase-shift keying (DC-FPSK) modulation for Internet-of-Things based on optical wireless systems. For DC-FPSK, non-negative phase-modulated frequency waveforms are generated by combining frequency-shift keying (FSK), phase-shift keying (PSK) and a DC offset. We propose optimal maximum likelihood and sub-optimal receivers for DC-FPSK. The performance is appraised in terms of Euclidean distance, bit-errorrate (BER) performance and energy efficiency. We determine that combining 4-PSK with conventional DC-FSK is the optimal approach to enhance the energy and spectral efficiencies.

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“…The work is modeled with Verilog hardware description language and Xilinx ISE (9,10) . Low power wide area networks problems are solved through innovative applications developed in recent years, In this work turbo Frequency shift keying is implemented, this FSK outputs the constant envelope waveform (11)(12)(13) . In the fourth generation networks, orthogonal frequency division multiplexing employed with Turbo-Frequency shift keying to obtain the constant envelope of the output signal.…”

Section: Introductionmentioning

confidence: 99%

Minimization of power and area of digital modulator for cellular communication using cadence in 180nm, 90nm and 45nm CMOS technology

Usha¹,

Mahesh²

2020

IJST

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Background/Objectives: Low power modulators are most efficient for wireless communication. Quadrature Amplitude Modulation (QAM) is used widely for high data rate communication than BPSK and QPSK, since it carries more bits of information per symbol over the channel. The objective of this work is to minimize the power consumption and area utilization of 32-bit QAM modulator. Methods/Statistical analysis: In this work, three new procedures are introduced for 32QAM modulator. In the first approach, sine and cosine data generated using conventional technique are stored in ROM and the stored data is selected based on the input sequence to generate the output signal. This approach reduces the power consumption and area utilization. In the second approach, information bit stream is modulated with sine and cosine waves generated by iterative algorithm to minimize power and area requirement. In the third approach, booth multiplication algorithm is employed to generate QAM signal. This method of generating QAM signal consumes less power and area in comparison with the conventional modulator. The work is synthesized, analyzed, and compared in 180nm, 90nm and 45nm CMOS technology using Cadence software. Findings: In 180nm CMOS technology power consumption noticed is 60662.740nW, 617020.071nW and 133679.687nW with the proposed method1, method2 and method3 respectively. An Area utilized in 180nm CMOS technology is 1341µm2, 20746.757µm2, and 2754µm2 respectively in proposed 32QAM modulator with ROM, 32QAM modulator with proposed Iterative algorithm and 32QAM modulator with Booth multiplication algorithm. Novelty/Applications: The conventional 32QAM devours additional power and area. In this work area and power reduction is achieved with respect to the conventional method. The same work is carried out with 90nm and 45nm CMOS technology. Three novel approaches to 32QAM are proposed. The proposed work is synthesized, analyzed, tabulated and compared with conventional method and shown that power consumption and area utilization are minimum than compared to the conventional method.

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Coplanar Turbo‐FSK: A Flexible and Power Efficient Modulation for the Internet‐of‐Things

Cited by 8 publications

References 25 publications

Turbo-DC-FSK: Joint Turbo Coding and FSK-Based Modulation for Visible Light Communications

Turbo-DC-FSK: Joint Turbo Coding and FSK-Based Modulation for Visible Light Communications

Hybrid Frequency and Phase-Shift Keying Modulation for Energy Efficient Optical Wireless Systems

Minimization of power and area of digital modulator for cellular communication using cadence in 180nm, 90nm and 45nm CMOS technology

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