Patent ID: 7424079
Filing Date: 2008-09-09
Classification: H04L

Abstract:
1. A receiving apparatus for receiving signals in a OFDM telecommunication system, comprising: receiving means for receiving a reference symbol comprising a plurality of successive repetition patterns, wherein each of said repetition patterns comprises a number of samples, the number of samples being the same for each repetition pattern, and whereby one repetition pattern of said repetition patterns is phase-shifted in relation to the other repetition patterns; and synchronizing means for performing a time and frequency synchronization of the receiving apparatus in the OFDM telecommunication system using said received reference symbol, said synchronizing means comprising correlation means for correlating the plurality of repetition patterns within a correlation window having a predetermined length, and said synchronizing means including detection means that detects a phase of each of the plurality of repetition patterns in said reference symbol and uses the phase-shift information of said one repetition pattern in relation to the other repetition patterns in said reference symbol to detect a correlation peak which indicates the position of said one repetition pattern.