A　blind　method　for　joint　estimation　of　the　frequency　offset　and　the　channel　in　an　OFDM　system　is　presented　in　this　paper.　Estimation　is　achieved　in　three　successive　steps.　First,　the　channel　containing　the　frequency-offset　component　is　estimated　by　means　of　subspace　techniques.　The　result　is　then　used　in　the　second　step,　which　is　cyclostationarity-based,　to　obtain　the　frequency　offset.　Third,　the　channel　can　be　achieved　by　removing　the　frequency-offset　component　from　the　result　of　the　first　step.　Finally,　based　on　the　above　three　steps,　an　iterative　method　is　used　to　get　more　accurate　estimation　of　the　channel　and　the　frequency　offset.　Mathematical　deduction　and　simulation　results　are　both　shown　that　the　proposed　method　is　effective,　and　is　superior　to　methods　introduced　in　two　earlier　papers.　©　2006　IEEE.