Efficient Techniques for Fault Detection and Correction of Reversible Circuits

It is very important to detect and correct faults for ensuring the validity and reliability of reversible circuits. Test vectors play an important role to detect as well as correct the faults in the circuits. The optimum number of test vector implies the more capabilities for detecting several types of faults in the circuits. In this paper, we have proposed an algorithm for generating optimum test vectors. We have shown that the proposed algorithm generates optimum test vectors with the least complexity of time as compared to existing methods, i.e., we have proved that the proposed algorithm requires O(log ₂ N) time, whereas the best known existing method requires O(N. log ₂ N) time, where N is the number of inputs. We have also proposed another algorithm for detecting faults using the generated test vectors. This proposed method can detect more faults than existing ones. We have proved that the proposed fault detection algorithm requires least time complexity as compared to the best known existing methods, i.e., the proposed algorithm requires O(d. 1/N) time, whereas the best known existing methods require O(d. N) time, where N is the number of inputs and d is the number of gates in a reversible circuit. Finally, we have proposed another algorithm for correcting the detected faults. We have also proved that the proposed methods require the least time complexity as compared to the best known existing methods. In addition, the experimental results using benchmark circuits show the efficiency of the proposed methods.