Low-complexity synchronization technique with adaptive mode detection for DVB-H system

This paper presents a novel synchronization technique with adaptive mode detection feature for the DVB-H system. The proposed joint algorithm doesn´t depend on the knowledge of the cyclic prefix length to accomplish the maximum likelihood correlation sum, compared with the conventional algorithm. A reliable adaptive mode detection scheme, including DFT points and cyclic prefix length detection, is also presented. It exploits the periodic character of the continuous correlation sum function as the decision criteria. In the frequency selective fading channel, this approach not only shortens the blind synchronization times but also reduces the implementation complexity by 91.3%