1. DH Johnson, DE Dudgeon, Array Signal Processing Concepts and Techniques (Prentice Hall, Englewood Cliffs, NJ, 1993).
2. HL Van Trees, Optimum Array Processing, 1st edn (John Wiley, New York, 2002). Part IV of Detection, Estimation and Modulation Theory.
3. TS Rappaport, Smart Antennas: Adaptive Arrays, Algorithms, and Wireless Position Location (IEEE Press, New York, 1998).
4. SD Blostein, H Leib, Multiple antenna systems: role and impact in future wireless access. IEEE Commun. Mag. 41(7), 94–101 (2003).
5. A Jagannatham, B Rao, in Proc. of IEEE ACSSC’2006. Superimposed pilots vs. conventional pilots for channel estimation (IEEECalifornia, USA, 2011).