Abstract
Visible light communication (VLC) relies on abundant unlicensed bandwidth resources. As an attractive high-data-rate modulation scheme designed for VLC, color shift keying (CSK)-assisted modulation is analyzed. We commence our study from an uncoded $M$ -CSK scheme relying on the joint maximum-likelihood (ML) hard detection (HD) of three colors when communicating over an AWGN channel, where both empirical and analytical results are provided. We invoke extrinsic information transfer (EXIT) charts for designing a Maximum a posteriori probability (MAP)-based soft detection (SD)-aided iterative receiver jointly detecting the three colors. Based on the EXIT characteristics of $M$ -CSK, we design different signal labeling strategies for diverse color constellations and detection schemes, which are capable of achieving a substantially improved bit-error-rate (BER) performance. Thus, given fixed transmission power, a CSK system using our proposed signal labeling is capable of increasing the reliable data transmission distance by about 30%.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.