Timing estimation method and device of wireless broadband communication system

The present invention discloses a broadband wireless communication system timing estimation method and apparatus, the timing requirements for different channels of multi-stage detection is provided, at a first stage power delay profile detection sequence is a detection target, in addition to the first stage of detection sequence other than the detection output level detector to detect a target, each detecting a detection target are determined in the present stage position having a maximum energy value of moving the detection window stage through the last stage thus detected can detect multipath energy occurs most concentrated region, based on this estimated timing location, in consideration of the timing requirements of different channels of a broadband wireless communication system can be distinguished on the premise, the estimated timing location with a smaller timing offset.