An indoor visible-light communication performance is investigated utilizing energy efficient white light by 2D LED arrays. Enabled by recent advances in LED technology, IEEE 802.15.7 standardizes high-data-rate visible light communication and advocates for colour shift keying (CSK) modulation to overcome flicker and to support dimming. Voronoi segmentation is employed for decoding N-CSK constellation which has superior performance compared to other existing decoding methods. The two chief performance degrading effects of inter-symbol interference and LED nonlinearity is jointly mitigated using LMS post equalization at the receiver which improves the symbol error rate performance and increases field of view of the receiver. It is found that LMS post equalization symbol at 250MHz offers 7dB SNR improvement at SER10-6
A traveling wave time domain model of bulk InGaAs/InP uni-traveling carrier photodiode is presented in
terms of integral carrier density rate equation. The wavelength dependent responsivity at different absorption width
has been derived from quantum mechanical principle. Output photocurrent response with time is found in close
agreement with the experimental value.
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