VLink is a modular VHDL framework for simulating digital communication links. It models a full transmitter–channel–receiver chain, including modulation, scrambling, coding, error insertion, signal processing and more. Ideal for educational use, prototyping, or introduction to communication principles.
| Component | Description |
|---|---|
| VLINK | Top-level wrapper connecting transmitter, channel, and receiver |
| Component | Description |
|---|---|
| CONV | Convolutional coding : encoding |
| CORDIC | Algorithmic processor for sine/cosing calculation |
| CRC | Cyclic redundancy check algorithm : CRC-16 |
| FIR | Finite Impulse Response filter for shaping and processing signals |
| LFSR | Linear Feedback Shift Register used for scrambling and descrambling |
| NCO | Algorithmic processor for oscillations computation |
| PKT_ASM | General purpose packet assembly for streaming data |
| PRBS | Pseudo-Random Bit Sequence generator and checker with error detection |
| PSK | Phase Shift Keying modulator/demodulator (currently BPSK) |
| RS_CODE | Reed Solomon codec |
| Component | Description |
|---|---|
| DAC | Digital to Analog Convertor |
| SEI | Systematic Error Insertion to simulate data corruption |
Each module includes a dedicated test bench to verify functionality and simulate realistic behavior. These are great for learning, debugging, or validating your own modifications.
- Simulate realistic digital communication links
- Test modulation, filtering, and error handling
- Provide reusable components for education and research
- Encourage modular design and experimentation
- VHDL-2008 compatible simulator
- Basic understanding of digital systems and signal processing
VLink was created to offer a modular and extensible way to explore digital communication systems in VHDL. Whether you're a student, researcher, or engineer, it gives you the basic building blocks to experiment and learn.
If you find VLink useful and would like to support its development, consider making a donation:
Your support helps keep the project alive and evolving. Thank you!
