Patent ID: 7312656

Claim:
A method of initializing a phase correction to be applied to a feedback signal, said feedback signal to be used in determining a deliberate predistortion for a signal processing system, the method comprising: a) initiating a coarse delay search b) selecting a time window of W samples of said feedback signal and an input signal with a predetermined sample delay increments of δ between samples c) calculating an inner product P δ by performing a complex multiply and accumulate process for the W samples in the time window d) storing a maximum |P δ | found e) repeating steps c) and d) for subsequent time windows and incrementing δ by a predetermined amount for each time window f) repeating steps b)–e) for a fine delay search using fractional sample increments to cover a predetermined delay range, said delay range being centered on a maximum delay increment δ max found during said coarse delay search.