Multimedia　System　has　been　widely　developed.　This　paper　proposes　a　new　kind　of　fast　Fournier　transformation　(WI)　and　a　carrier　recovery　loop　for　accurate　fine　tracking.　This　paper　uses　the　FFT　carrier　frequency　offset　to　pre-estimate　it　that　corrects　the　big　frequency　firstly,　based　on　this,　it　uses　the　carrier　frequency　ring　circuit　to　correct　the　small　frequency　offset.　Comparing　with　other　methods,　its　estimation　is　more　accurate.