Coding for Visible Light Communication Using Color-Shift Keying Constellations Academic Article

abstract

• 2019 IEEE. Color-shift keying (CSK) is a modulation scheme used in visible light communication (VLC) to transmit data by varying the intensity of red, green, and blue LEDs. We study the channel coding for VLC using CSK under constraints of no color shift and no illumination flicker during transmission and design codes over newly introduced symmetric symbol constellations over a triangle intensity plane. One class of codes contains the transmitted sequence based on finite-state machines, and the other is based on the concept of trellis-coded modulation for mitigating color shifts during transmission. The codes have a trellis structure which allows optimal soft-decision decoding using the Viterbi algorithm providing asymptotic coding gain improvements of 1.5 to 3.5 dB with respect to the uncoded transmission while complying with the color shift and flicker constraints.

authors

• Georghiades, Costas

published proceedings

• IEEE TRANSACTIONS ON COMMUNICATIONS

author list (cited authors)

• Mejia, C. E., & Georghiades, C. N.

citation count

• 9

complete list of authors

• Mejia, Carlos E||Georghiades, Costas N

publication date

• July 2019

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• IEEE TRANSACTIONS ON COMMUNICATIONS  Journal

keywords

• Channel Coding
• Color Perception
• Color-shift Keying
• Finite-state-machines
• Trellis Coded Modulation
• Visible Light Communication
• Viterbi Algorithm

Digital Object Identifier (DOI)

• 10.1109/TCOMM.2019.2907939

start page

• 4955

end page

• 4966

volume

• 67

issue

• 7

URL

• http://dx.doi.org/10.1109/tcomm.2019.2907939