1-Digital & Analog Communication Systems, 8/E .Leon W. Couch, 2013.pearson education.
2-Fundamentals of Communication Systems, 2/E. John G. Proakis,2014.person education.
3-Modern Wireless Communications.Simon O. Haykin ,2005.pearson education
4-Wireless Communications: Principles and Practice, 2/E ,Theodore S. Rappaport .2002. pearson education.