In　this　paper,　we　consider　the　problem　of　frame　detection　by　using　multiple　antennas　over　wireless　fading　channels.　We　introduce　frame　detection　with　different　combining　schemes　including　space　diversity.　Firstly,　probability　of　miss　detection　curves　comparing　the　performance　of　frame　detection　with　selection　combining　(SC)　scheme,　equal　gain　combining　(EGC)　scheme　and　maximum　ratio　combining　(MRC)　scheme　are　presented.　We　also　investigate　the　performance　when　frame　detection　adopts　down-sampling.　Our　simulation　results　explicitly　show　that　the　performance　of　the　frame　detection　with　MRC　scheme　and　down-sampling　does　not　degrade　apparently.　We　also　find　that　the　number　of　receive　antennas　is　exponentially　increased　with　the　performance　improvement.　©　2012　Springer-Verlag　GmbH.