An approach for minimizing a quadratically constrained fractional quadratic problem with application to the communications over wireless channels

aSchool of Science, Beijing University of Posts and Telecommunications, Beijing 100876, People’s Republic of China; bCollege of Mathematics and Statistics, Hebei University of Economics and Business, Shijiazhuang 050061, People’s Republic of China; cKey Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, People’s Republic of China; dSchool of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, People’s Republic of China