Coded PWM Based Switching Ripple Communication Applied in Visible Light Communication

Chen, Jinghui; Wu, Jiande; Wang, Ruichi; Zhang, Ruoqi; He, Xiangning

doi:10.1109/tpel.2021.3056754

Cited by 22 publications

(8 citation statements)

References 20 publications

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“…In the VLC scenario, the information transmission is performed by modulating the light intensity waveform emitted by the high brightness LEDs. To fulfill the both the lighting and the communication tasks, LED current is made up of a DC component that establishes the lighting level and a high-frequency AC component that cannot be seen by human eyes and is determined by the modulation scheme [28]. A comprehensive review of VLC-LED drivers and modulators types has been presented in [97].…”

Section: B Prospective Applications Of Tpcmentioning

confidence: 99%

“…Concerning wired communication, it has been applied to Battery Management Systems (BMS) and switching reluctance generators/motors [24], [25], [26], allowing the signal transmission for condition monitoring, fault diagnosis, and efficiency optimization easily achieved. Regarding wireless communication, TPC has been employed in visible light communication and wireless electric vehicle charging stations, far extending connections of electric devices and reducing the establishment of both signal and power lines [27], [28]. Recently, an overview of TP application in microgrids (μ-grids) has been presented in [11] where TP is referred as PSDM.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Overview of Talkative Power Conversion Technologies

Liserre

Beiranvand

Leng

et al. 2023

IEEE Open J. Power Electron.

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Power Line Communication (PLC) and Simultaneous Wireless Information and Power Transfer (SWIPT) are popular examples of applications, where power and information are transmitted simultaneously. In most cases, different devices have been used to generate the power and communication signals independently. Usually, the information is superimposed onto the power signal using an external modulator. Recently, power converters have been used to generate pulses not just for power conversion but also for information transfer simultaneously. This approach represents a fundamental difference because it exploits the signal processing potential of Pulse Width Modulation (PWM), where for power conversion only the average pulse width is used, while the information is represented by the harmonics instead of being filtered out, as typically done in power electronics. The concept of embedding information into the switching ripple generated by a switched-mode power converter has recently been dubbed Talkative Power (TP), in this paper referred as Talkative Power Conversion (TPC). TPC technologies are reviewed in non-isolated and isolated converters in this paper. Potential applications include visible light communications, battery management systems, switching reluctance generators/motors, microgrids, and wireless electric vehicle charging stations. Finally, trending topics are identified.INDEX TERMS Talkative power conversion, pulse width modulation converters, power line communication, switching ripple communication, simultaneous wireless information and power transfer.

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Section: B Prospective Applications Of Tpcmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Overview of Talkative Power Conversion Technologies

Liserre

Beiranvand

Leng

et al. 2023

IEEE Open J. Power Electron.

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show abstract

“…The classical continuous PWM switching signal is replaced by the data-carrying signal. The modulation unit is fully digital, analogue hardware like a comparator is obsolete as independently proposed in [3], [4]. Previously, the data was modulated onto a carrier using an analog circuit.…”

Section: System Designmentioning

confidence: 99%

“…Reliable data recovery is only possible if the signal-to-interference-plus-noise ratio (SINR) is sufficiently large. This trade-off between PE and COM requirements can be mitigated by spreading and channel coding techniques [3], [4] as well as an advanced fullydigital receiver design [4]. Among the advantages of the talkative power concept compared to coupler-based power-line communication technologies are simplicity and low hardware cost, short latency, and the possibility of reduced EMI in conjunction with random coding and/or filtering.…”

Section: Introductionmentioning

confidence: 99%

Networking Aspects based on the Talkative Power Concept for DC Microgrid Systems

Hoeher

Placzek

Hott

et al. 2022

2022 IEEE 13th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)

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The talkative power concept is a simultaneous power-line communication and energy transfer technique which integrates data modulation into a power converter. The information sequence is deterministically represented by the ripple, which superimposes the output voltage. With a few exceptions, so far emphasis has been on scenarios where only a single node is actively transmitting data in a certain time slot in simplex mode. In microgrid applications, however, multiple active power sources are of interest as well. Examples include battery management systems, smart metering, electricity trading systems, and smart grids with several power sources, energy storage devices, and data receivers. In this contribution, bus networking aspects based on the talkative power concept are presented for scenarios with several active nodes and for full-duplex communication. The paper addresses potential multiple access techniques as well as duplexing schemes for connected power converters supporting bidirectional power and information flow. In numerical results, a spread spectrum scheme based on orthogonal variable spreading factor codes in conjunction with frequency shift keying (FSK) is presented for four simultaneously active buck converters with a sum data rate of 500 kbps at a switching frequency of 1 MHz. In general, with 2-ary FSK, the maximum achievable sum data rate is half of the switching frequency in a synchronous setup.

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“…Another approach for implementing a VLC driver able to reach high power efficiency consists in using a fast-response DC-DC converter that not only biases the HB-LEDs by providing V o-dc , but also reproduces the communication signal by generating v o-ac (t) [17][18][19][20][21][22][23][24][25][26]. However, that approach also leads to a noticeable increase in both hardware and control complexity in comparison to the approach shown in Figure 1, especially when the VLC driver must be able to reproduce passband modulation schemes [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

On the Use of Class D Switching-Mode Power Amplifiers in Visible Light Communication Transmitters

Garcia-Mere

Rodríguez

Lamar

et al. 2022

Sensors

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Visible Light Communication (VLC) is a wireless communication technology that uses visible light to transmit information. The most extended implementation of a VLC transmitter employs a DC-DC power converter that biases the High-Brightness LEDs (HB-LEDs), and a Linear Power Amplifier (LPA) that reproduces the communication signal. Unfortunately, the power efficiency of LPAs is very low, thus reducing the overall system efficiency and requiring huge cooling systems to extract the heat. In this work, the use of Class D Switching-Mode Power Amplifiers (SMPAs) is explored in order to overcome that limitation. It is important to note that this SMPA is widely used for different applications, such as audio and RF power amplifiers. Therefore, there are a lot of versions of a Class D SMPA depending on the topology used for the implementation and the modulation strategy used to control the switches. Hence, this work aims to identify, adapt and explain in detail the best approach for implementing a Class D SMPA for VLC. In order to validate the proposed idea, a power-efficient VLC transmitter intended for short-range and low-speed applications was built and evaluated.

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Coded PWM Based Switching Ripple Communication Applied in Visible Light Communication

Cited by 22 publications

References 20 publications

Overview of Talkative Power Conversion Technologies

Overview of Talkative Power Conversion Technologies

Networking Aspects based on the Talkative Power Concept for DC Microgrid Systems

On the Use of Class D Switching-Mode Power Amplifiers in Visible Light Communication Transmitters

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