Resilience of Error Correction Codes Against Harsh Electromagnetic Disturbances: Fault Elimination for Triplication-Based Error Correction Codes

Abstract

Modern safety-critical systems rely heavily on robust communication channels. Even though these communication channels can be protected by error detection and correction codes, vulnerabilities caused by false negatives still exist. These false negatives can be caused by harsh electromagnetic disruptions and are detrimental to overall safety. This article considers the construction and structure of triplication-based error correction codes to find the most electromagnetic interference (EMI)-resilient code. Each code is tested and simulated in terms of the occurrence rate of false negatives under single-frequency disturbances. It is found that a code with inversion is significantly more robust to these disturbances. Furthermore, a systematic fault injection is also performed to search for vulnerabilities within the code itself. The systematic approach allows us to reverse engineer the expected vulnerabilities to real-world disturbances.