Patent ID: 7317767

Claim:
A method of simultaneously determining a DC offset (a dc ) and a channel impulse response (h), the method comprising: receiving a signal from a first station by a second station via a communication channel in a mobile communication system, the signal comprising digital data and a set of training sequence bits modulated prior to transmission; generating a set of reference signal samples representing the training sequence bits and a set of rotation elements depending on the modulation applied to the digital data prior to transmission; sampling the signal to produce a plurality of received signal samples from the training sequence portion of the signal, the received signal samples possibly including a DC offset; and manipulating the received signal samples with the sets of received signal samples and rotation elements in such a way as to simultaneously estimate the DC offset (a dc ) and the channel impulse response (h) by minimizing a squared distance function, wherein the channel impulse response (h) is estimated using a priori information which is either pre-stored or calculated in a preliminary estimation.