[1] Bernard Sklar, Digital Communications: Fundamentals and Applications, 2nd edition, 2001, Prentice Hall.
[2] John Proakis, Digital Communications, 4th edition, 2001, McGraw-Hill.
[3] Bruce Carlson et al., Communication Systems: An Introduction to Signals and Noise in Electrical Communication, 4th edition, 2001, McGraw-Hill.
[4] Rogger E. Ziemer, Roger W. Peterson, Introduction to Digital Communication, 2nd edition, 2000, Prenctice Hall.