... |hb,k| 2 ,andk=(|ha,k| 2 + |hb,k| 2 ) 2 (η|ha,k| 2 + |hb,k| 2 )(η|hb,k| 2 + |ha,k| 2 ). By applying the bounds 2 η 2 +1<k<1ηfor all k [9,Theorem 2] , and the ... 48(6), 127 7– 129 4 (20 02) . doi:10.1109/TIT .20 02. 1003 822 20 . L Yang, MS Alouini, Performance analysis of multiuser selection diversity.IEEE Trans Veh Technol. 55(6), 1848–1861 (20 06) 21 . M Abramowitz, ... Stegun, Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables, 10th edn. (Dover Publications,New York, 19 72) 22 . W Rudin, Principles of Mathematical Analysis, 3rd...