Supported by the National Natural Science Foundation of China(11162004,11101100);the Guangxi Natural Science Foundation(2012GXNSFAA053006);the Science Research Foundation of Guangxi Education Department(YB2014117)
Supported by the Science Research Foundations for the Doctoral Program of Guilin University of Electronic Technology under Grant(UF09007Y);the Guangxi Natural Science Foundations under Grant(2010GXNSB013049);the National Natural Science Foundations under Grant(11101100,71001015)