Algorithm-based fault tolerance (ABFT) is used to provide low-cost error protection for VLSI processor arrays used in real-time digital signal processing. The main objective of incorporating an ABFT technique in a pro...
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Algorithm-based fault tolerance (ABFT) is used to provide low-cost error protection for VLSI processor arrays used in real-time digital signal processing. The main objective of incorporating an ABFT technique in a processor array is to improve its reliability. All previous approaches on ABFT are evaluated in terms of their errordetecting/correcting capabilities, the reliability improvement has never been addressed. In this paper, we develop a stochastic model for an array processor incorporating ABFT that takes the behavior of transient/intermittent failures and hardware overhead into account. This model is then used to evaluate reliability and reliability improvements of several existing ABFT techniques that tolerate single faults. Therefore, a user can evaluate a number of ABFT techniques and make a trade-off between reliability and cost prior to the implementation. Moreover, we have conducted extensive simulation experiments and the simulation results validate the proposed model.
The modern world has become dependent on satellites to function as they enable services such as navigation, communication, and sensing. Despite their importance, few space systems have been built with security in mind...
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ISBN:
(纸本)9781911218739
The modern world has become dependent on satellites to function as they enable services such as navigation, communication, and sensing. Despite their importance, few space systems have been built with security in mind. As cyber warfare escalates on earth, it will encompass the space realm as well. Therefore, it is essential to explore the impacts of space assets, identify their vulnerabilities, and devise mitigation techniques to lower their risk before they are fully encompassed in cyber warfare. The goal of this paper is to explore the use of Reed Solomon (RS) codes on field-programmable gate arrays to mitigate the manipulation of data on satellites and to compare the reliability of various RS code types to ascertain whether one outperforms the others. This method is primarily aimed towards maintaining the integrity of the data through the use of error correction codes on small, cost effective platforms that can be implemented on satellites relatively easily. The results of this paper will serve as the building block for future work that will seek to increase the errorcorrecting capabilities of both consecutive and nonconsecutive errors and to add on a layer of integrity to the data set.
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