Simultaneous estimation of gain, delay, and offset utilizing the farrow structure

This paper shows how to utilize the adjustable fractional delay Farrow structure for simultaneous estimation of gain, delay, and offset differences between two discrete-time signals with samples taken from the same underlying continous- time signal. The idea is to minimize the averaged squared difference between the sample sequences employing two well known minimization methods, steepest descent and Newton´s method. A comparison with respect to complexity and performance is provided.