A CMOS transimpedence amplifier with ambient light rejection for visible light communication in intelligent transport systems

Moaaz Ahmed, Amine Bermak

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A fully differential transimpedence amplifier (TIA) that serves as a receiver front-end for visible light communication (VLC) is proposed. The TIA incorporates an ambient light rejection circuit in the form of a floating active inductor (FAI) which can effectively bypass photocurrent (upto 50μA) and allows the subsequent transimpedence stage to only integrate the modulated photocurrent. This helps to avoid receiver saturation when exposed to excessive optical interference (i.e. large DC photocurrent) in outdoor environment of intelligent transport systems (ITS). Implemented in TSMC 0.18μm CMOS process, the proposed VLC receiver front-end consumes 220 μA bias current and exhibit transimpedence gain of 98dBω. Our design is aimed for VLC based receivers in intelligent transport systems by enabling active tracking between VLC transmitter and receiver using the same degree of polarization of light.

Original languageEnglish
Title of host publication2019 15th International Wireless Communications and Mobile Computing Conference, IWCMC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages7-13
Number of pages7
ISBN (Electronic)9781538677476
DOIs
Publication statusPublished - Jun 2019
Event15th IEEE International Wireless Communications and Mobile Computing Conference, IWCMC 2019 - Tangier, Morocco
Duration: 24 Jun 201928 Jun 2019

Publication series

Name2019 15th International Wireless Communications and Mobile Computing Conference, IWCMC 2019

Conference

Conference15th IEEE International Wireless Communications and Mobile Computing Conference, IWCMC 2019
CountryMorocco
CityTangier
Period24/6/1928/6/19

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Keywords

  • Active inductor
  • Receiver front-end
  • Transimpedence amplifier
  • Visible light communication

ASJC Scopus subject areas

  • Hardware and Architecture
  • Computer Networks and Communications
  • Safety, Risk, Reliability and Quality

Cite this

Ahmed, M., & Bermak, A. (2019). A CMOS transimpedence amplifier with ambient light rejection for visible light communication in intelligent transport systems. In 2019 15th International Wireless Communications and Mobile Computing Conference, IWCMC 2019 (pp. 7-13). [8766535] (2019 15th International Wireless Communications and Mobile Computing Conference, IWCMC 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IWCMC.2019.8766535