Analysis and Design of Three-Stage Concatenated Color-Shift Keying

摘要: 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 is analyzed. We commence our study from uncoded $M$ -CSK relying the joint maximum-likelihood (ML) hard detection (HD) of three colors when communicating over AWGN channel, where both empirical and analytical results are provided. invoke extrinsic information transfer (EXIT) charts designing a Maximum posteriori probability (MAP)-based soft (SD)-aided iterative receiver jointly detecting colors. Based EXIT characteristics -CSK, we design different signal labeling strategies diverse constellations schemes, which capable achieving substantially improved bit-error-rate (BER) performance. Thus, given fixed transmission power, CSK system using proposed increasing reliable data distance by about 30%.