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<p>The algorithm-based fault tolerance techniques have been proposed to obtain reliableresults at very low hardware overhead. Even though 100% fault coverage can betheoretically obtained by using these techniques, the system performance, i.e., faultcoverage and throughput, can be drastically reduced due to many practical problems,e.g., round-off errors. A novel algorithm-based fault tolerance scheme is proposed forfast Fourier transform (FFT) networks. It is shown that the proposed scheme achieves100% fault coverage theoretically. An accurate measure of the fault coverage for FFTnetworks is provided by taking the round-off error into account. The proposed scheme isshown to provide concurrent error detection capability to FFT networks with lowhardware overhead, high throughput, and high fault coverage.</p>
Index Termsconcurrent error detection scheme; FFT networks; algorithm-based fault tolerancetechniques; system performance; fault coverage; round-off errors; digital signalprocessing chips; error detection; fast Fourier transforms; fault tolerant computing;roundoff errors

D. Tao and C. Hartmann, "A Novel Concurrent Error Detection Scheme for FFT Networks," in IEEE Transactions on Parallel & Distributed Systems, vol. 4, no. , pp. 198-221, 1993.
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