2Kamilo Feher, Wireless Digital Communications: modulation and spread spectrum applications, Prentice - Hall PTR, 1995. Chapter 7:333 - 352.
3Marvin K. Simon and Mohamed - Slim Alouini," Unified Performance Analysis of Digital Communication with Dual Selective Combining Diversity over Correlated Rayleigh and Nakagami - m Fading Channels," IEEE Trans. Commun. Jan. 1999;47(1) :33 - 43.