1. Liberti, J., & Rappaport, T. (1999). Smart antennas for wireless communications. New Jersey, USA: Prentice Hall.
2. Godara, L. (2004). Smart antennas. Florida, USA: CRC Press.
3. Zooghby, A. (2005). Smart antenna engineering. Norwood, USA: Artech House.
4. Paulraj, A., Nabar, R., & Gore, D. (2003). Introduction to space-time wireless communications. Cambridge, UK: Cambridge University Press.
5. Tsoulos, G. (2006). MIMO system technology for wireless communications. Florida, USA: Taylor & Francis Group.