Criticality Aware Soft Error Mitigation in the Configuration Memory of SRAM based FPGA

Efficient low complexity error correcting code(ECC) is considered as an effective technique for mitigation of multi-bit upset (MBU) in the configuration memory(CM)of static random access memory (SRAM) based Field Programmable Gate Array (FPGA) devices. Traditional multi-bit ECCs have large overhead and complex decoding circuit to correct adjacent multibit error. In this work, we propose a simple multi-bit ECC which uses Secure Hash Algorithm for error detection and parity based two dimensional Erasure Product Code for error correction. Present error mitigation techniques perform error correction in the CM without considering the criticality or the execution period of the tasks allocated in different portion of CM. In most of the cases, error correction is not done in the right instant, which sometimes either suspends normal system operation or wastes hardware resources for less critical tasks. In this paper,we advocate for a dynamic priority-based hardware scheduling algorithm which chooses the tasks for error correction based on their area, execution period and criticality. The proposed method has been validated in terms of overhead due to redundant bits, error correction time and system reliabilityComment: 6 pages, 8 figures, conferenc

VLSI Implementation of Multi-Bit Error Detection and Correction Codes for Space Communications

Data transmission in advanced space communications are suffering with the different types of noises. Further, these noises causeburst errors indata. Thus, the error correction codes (ECC) plays the major role to detect and correct the errors. However, the conventional hamming encoders, decoderswere detected and corrected only one bit error. Therefore, this work implementation the Multi-Bit Error Detection and CorrectionCodes (MBE-DCC) for multiple bits error detection and correction. Initially, MBE-DCC encoding operation is implemented by using generator matrix, which contains both identity bits and parity bits. Then, encoded code word is transmitted into the channel of space communication, where encoded data corrupted by different types of noises, errors. Therefore, the MBE-DCC decoding operation performed at receiver side of space communications, which corrected all the errors using syndrome detection, error location detection, and error correction modules.  The simulations revealed that the proposed MBE-DCC resulted in superior performance than conventional ECC method