Non-Return-to-Zero (NRZ) Line Coding with MATLAB Implementation
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Resource Overview
After launching the MATLAB interface, execute the program to receive a prompt for NRZ code input. Enter binary sequences as arrays, then the system automatically generates encoding and decoding results for CMI, AMI, and HDB3 line codes. The output provides clear comparisons between pre-encoding and post-encoding states, demonstrating waveform transformations through visualization functions and encoding algorithms.
Detailed Documentation
When you access the MATLAB runtime interface, you can directly execute the program. Upon execution, the interface displays a prompt requesting NRZ code input. Input your binary sequence using array format (e.g., [1 0 1 1 0 0 1]). After confirming the input, the program automatically processes the data through three distinct line coding algorithms:
1. CMI (Coded Mark Inversion) - Converts bits to two-level patterns with mandatory transitions
2. AMI (Alternate Mark Inversion) - Preserves zero bits while alternating polarity for ones
3. HDB3 (High-Density Bipolar 3) - Ensures clock recovery by replacing zero sequences with special codes
The system displays both encoded waveforms and their decoded counterparts using MATLAB's plotting functions, allowing clear visual comparison of signal transformations before and after encoding. The implementation includes error-checking routines to validate input formats and maintain signal integrity throughout the encoding/decoding processes.
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