MATLAB Implementation of OOK Modulation for Visible Light Communication (VLC)

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Resource Overview

Application Background: MATLAB code for calculating Bit Error Rate (BER) of On-Off Keying (OOK) modulation in Visible Light Communication (VLC). Beginners can use this to understand the modulation process in VLC systems and apply it to advanced research. Key Technology: This program implements binary On-Off Keying (OOK), also known as 2-Level Amplitude Shift Keying (2ASK), where unipolar non-return-to-zero codes control the switching of sinusoidal carriers. Despite its inferior noise resistance compared to other modulation schemes (limiting its use in satellite and microwave communications), OOK's simplicity makes it widely adopted in fiber-optic systems and an excellent starting point for studying digital modulation fundamentals. Code implementation includes signal generation, modulation/demodulation processes, and BER calculation algorithms.

Detailed Documentation

This text discusses MATLAB code for analyzing the Bit Error Rate (BER) of On-Off Keying (OOK) modulation in Visible Light Communication systems. The code helps beginners understand VLC modulation processes and serves as a foundation for advanced research. Key Technology: The program implements binary On-Off Keying (OOK), alternatively called 2-Level Amplitude Shift Keying (2ASK), using unipolar non-return-to-zero codes to control sinusoidal carrier wave transmission. The MATLAB implementation typically involves: - Generating random binary data sequences - Mapping bits to amplitude levels (1=carrier on, 0=carrier off) - Adding AWGN to simulate channel conditions - Implementing correlation receivers or envelope detectors for demodulation - Calculating BER through bit-by-bit comparison While OOK's noise resistance limitations restrict its application in satellite and microwave communications, its implementation simplicity makes it prevalent in fiber-optic systems. The straightforward MATLAB code structure (involving basic multiplication of data with carrier signals) makes OOK an ideal introductory method for studying digital modulation principles, with potential extensions including threshold optimization and performance comparisons with other modulation schemes.

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