Patent ID: 8971397
Filing Date: 2015-03-03
Classification: H04L

Abstract:
1. A method for performing on-the-fly compensation on an offset between a sampling frequency and a symbol rate in a symbol sequence, and a phase offset in a receiver in order to restore data in a transmitted symbol sequence, the method comprising the steps of: generating a plurality of polyphase-resolved received symbol sequences corresponding to the number of polyphases by shifting the relative timing when a received symbol sequence oversampled based on a predetermined number of oversamplings is down-sampled based on the inverse of the predetermined number of oversamplings, the received symbol sequences being two types of symbol sequences: a symbol sequence having an odd phase and a symbol sequence having an even phase when the predetermined number of oversamplings is two; shifting by at least one step the timing of at least two of the received symbol sequences that have been polyphased to obtain at least two received symbol sequences; providing tap coefficient sequences with at least two variables for at least two of the received symbol sequences that have been obtained; applying feedback from an adaptive algorithm to subsequent down-sampled symbol rates in order to input a described relationship according to a size of the tap coefficients and the received symbol sequences as the size of the tap coefficients changes; monitoring the position of the tap coefficient indicating the maximum size among a plurality of tap coefficients based on a comparison of the sizes of the tap coefficients; and shifting the positions of all tap coefficients and simultaneously skipping or overlapping any one of the oversampled received symbol sequences when the position of the monitored tap coefficient indicating the maximum size has moved to a different adjacent tap coefficient position.