Patent ID: 8064530
Filing Date: 2011-11-22
Classification: H04L

Abstract:
1. A determination method for determining a frame header mode of a DMB-TH system data structure, comprising: generating a signal when signal frequencies at a transmitting terminal and a receiving terminal are identical; providing a predetermined amplification process to process the signal in order to select the predetermined amplification process such that the signal forms a peak when a frequency offset occurs; and to check if said peak is recognizable during said frequency offset, if not utilize another predetermined amplification process until the peak is clearly identified; and determining a type of the frame header mode from said signal according to the predetermined selected amplification process, wherein the predetermined amplification process comprises: a. providing a delay device and a complex conjugate device to process said signal which contains a frame header signal; b. providing a multiplier to multiply the frame header signal from said signal by the processed output of the delay device and the complex conjugate device; c. accumulating the multiplied output of step b and taking the absolute value of the squared accumulation to obtain a first squared value, and accumulating the frame header signal contained in said signal and taking the squared accumulation to obtain a second squared value; and d. dividing the first squared value by the second squared value.