Fault-tolerant round robin A/D converter system

A robust A/D converter system is described which requires much less hardware overhead than traditional modular redundancy approaches. A modest amount of oversampling is used to generate information which can be exploited to achieve fault tolerance. A generalized likelihood ratio test is used to detect the most likely failure and also to estimate the optimum signal reconstruction. The error detection and correction algorithm reduces to a simple form and requires only a slight amount of hardware overhead. A derivation of the algorithm is followed by simulation results