Patent ID: 7693209
Filing Date: 2010-04-06
Classification: H04B,H04L

Abstract:
1. A method for frequency offset fine estimation in a TD-SCDMA system, comprising: (a) receiving SYNC-DL (synchronization downlink) code comprising S (b) determining a P-CCPCH position upon the completion of the initial cell search via reading a BCH message sent from the base station by a mobile terminal; (c) determining whether S (d) measuring a phase of received SYNC-DL code by the mobile terminal, wherein the SYNC-DL code is S (e) subtracting the phase of SYNC-DL code sent from the base station from the phase of received SYNC-DL code measured in step (d) to obtain a phase drift from the base station to the mobile terminal; and (f) deriving the frequency offset base on the phase drift obtained in step (e).