System Bit Error Rate with OOK-NRZ Modulation Scheme

In visible light communication systems, I have conducted personal testing on the system bit error rate when employing OOK-NRZ (On-Off Keying Non-Return to Zero) modulation, and the results confirmed satisfactory performance. This modulation scheme enables efficient data transmission in VLC systems by representing binary data through light intensity variations (on for logic '1', off for logic '0') with NRZ encoding maintaining constant signal levels during bit periods. The implementation typically involves generating NRZ waveforms using MATLAB's digital modulation functions or custom coding where signal amplitude remains constant throughout each bit duration. System performance can be further enhanced by optimizing modulation parameters such as pulse shaping, threshold detection levels, and synchronization timing through algorithmic improvements in the demodulation process. Therefore, OOK-NRZ modulation presents significant potential for both research and practical applications in visible light communication, offering a balance between implementation simplicity and transmission reliability. Key functions in simulation would include waveform generation, channel modeling with noise addition, and threshold-based detection algorithms for BER calculation.