Error detector and error method of detection null of FFT

摘要

A technique for obtaining checksum in an FFT network composed of N stage modules includes: an adder-multiplier and a first adder respectively connected to two inputs of each stage module, a second and a third adder respectively connected to two outputs of each stage module, a first comparator for comparing the outputs of the first and second adders, and a second comparator for comparing the outputs of the adder-multiplier and third adder, the checksum being calculated at every stage to detect defects.