The National Basic Research Program of China(973 Program)(2008CB317109);The National Natural Science Foun-dation of China(60972084);The National Natural Science Foun-dation of China(61162007);The National Natural Science Foun-dation of China(61102115);The Natural Science Key Foundation of Guangxi Province(2011GXNSFD018028);The Natural Science Foundation of Guangxi Province(0991241);The Natural Science Foundation of Guangxi Province(0832007Z);The Key Director Laboratory Fund of Guangxi Broadband Wireless Communication and Signal of 2011(11106);The Key Director Laboratory Fund of Guangxi Broadband Wireless Communication and Signal of 2011(11104)