Title :
A downlink co-channel signal transmitting model for the smart antenna system
Author :
Jin, Liang ; Li, Jiang ; Yin, Qinye ; Fu, Junmei
Author_Institution :
Dept. of Electr. & Inf. Eng., Xi´´an Jiaotong Univ., China
Abstract :
The issue of transmitting downlink multiple signals in the smart antenna system is addressed here. By non-coherent superposition of the field, the equivalent feed model of the antenna arrays is established under multi-user condition, which is proved to be effective when transmitting multiple co-channel signals to several receivers. Based on that model, the feasibility and efficiency of accomplishing phase-shift and amplitude-weight in base-band signal processing unit is also discussed. Finally, for the case of MSK modulation, the downlink implementation scheme of the smart antenna system is presented
Keywords :
adaptive antenna arrays; antenna feeds; antenna theory; minimum shift keying; MSK modulation; amplitude-weight; base-band signal processing unit; downlink cochannel signal transmitting model; downlink implementation scheme; downlink multiple signals; equivalent feed model; multi-user condition; multibeam antenna; noncoherent field superposition; phase-shift; smart antenna system; Antenna arrays; Array signal processing; Base stations; Downlink; Feeds; Mobile communication; Phased arrays; Signal processing; Synthetic aperture sonar; Transmitting antennas;
Conference_Titel :
Microwave Conference Proceedings, 1997. APMC '97, 1997 Asia-Pacific
Print_ISBN :
962-442-117-X
DOI :
10.1109/APMC.1997.659298
