1[1]John Litva and Titus Kwork-Yeung Lo. Digital Beamforming in Wireless Communications. Artech House.1996
2[2]Yoshio KARASAWA,et al.The Software Antenna, a New Concept of Kaleidoscopic Antenna in Multimedia Radio and Mobile Computing Era.IEICE Trans.Com. 1997.Vol. E80-B(8):1214-1217
3[3]George Tsoulos,et al. Wireless Personal Communications for the 21st Century: European Technological Advances in Adaptive Antennas. IEEE Com. Magazine.1997:102-109