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FPGA-Implemented Fractal Decoder with Forward Error Correction in Short-Reach Optical Interconnects
Svitlana Matsenko1, Oleksiy Borysenko2, Sandis Spolitis1,3
1Communication Technologies Research Center, Riga Technical University, 1048 Riga, Latvia.
Entropy (Basel, Switzerland)
|January 21, 2022
Summary
This study introduces indivisible error detection codes for optical communication systems. These codes enhance reliability and reduce hardware costs in coded modulation systems.
Area of Science:
- Optical communication networks
- Digital communication systems
- Error control coding
Background:
- Coded modulation (CM) is crucial for efficient and reliable optical networks.
- High-performance CM systems require advanced error control mechanisms.
- Indivisible error detection codes offer a novel approach to enhance CM system reliability.
Purpose of the Study:
- To propose and evaluate indivisible error detection codes for CM systems.
- To assess the performance of these codes using the Average Probability Method (APM).
- To investigate the hardware cost reduction potential of fractal decoder implementations.
Main Methods:
- Utilized the Average Probability Method (APM) for evaluating codes on a Binary Symmetric Channel (BSC).
- Developed a fractal decoder implemented in Field-Programmable Gate Array (FPGA) software.
- Applied codes to optical interconnects using multilevel Pulse Amplitude Modulation (PAM-M) with Gray coding.
Main Results:
- Indivisible codes provide effective end-to-end error control.
- Fractal decoder implementation using indivisible codes reduced hardware costs by 10-30%.
- Achieved high error detection efficiency with natural redundancy and reduced hardware complexity.
Conclusions:
- Indivisible codes are a viable solution for enhancing error control in high-performance CM systems.
- The proposed fractal decoder offers significant hardware cost savings.
- These codes contribute to more efficient and reliable optical communication.
