Title :
A novel SDMA configuration using smart antenna adopting vertical pattern and polarization control
Author :
Nishimori, Kentaro ; Cho, Keizo
Author_Institution :
NTT Network Innovation Labs., NTT Corp., Kanagawa, Japan
Abstract :
Smart base station antenna must be established in limited installation spaces in urban cellular environments. To realize this, smart antennas employing a vertical pattern have been studied. In this paper, we first present the characteristics of the angular spread in the vertical plane using an array antenna with elements arranged in the vertical plane in an actual cellular environment. The performance and problems of smart antennas employing the vertical pattern are elucidated by computer simulation considering the measured angular spread. This paper also proposes space division multiple access (SDMA) using smart antennas utilizing vertical pattern and polarization control with terminal polarization assignment, which can discriminate SDMA users while using a limited antenna installation space. Finally, the effectiveness of the proposed SDMA system is confirmed by computer simulation using the measured propagation channel data in an actual cellular environment.
Keywords :
adaptive antenna arrays; antenna radiation patterns; cellular radio; electromagnetic wave polarisation; space division multiple access; telecommunication control; SDMA configuration; angular spread; array antenna; base station; measured angular spread; measured propagation channel data; polarization control; smart antenna; space division multiple access; terminal polarization assignment; urban cellular environments; vertical pattern; Antenna measurements; Antennas and propagation; Base stations; Broadband communication; Computer simulation; Control systems; Multiaccess communication; Polarization; Space stations; Wireless communication;
Conference_Titel :
Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual
Print_ISBN :
0-7803-7757-5
DOI :
10.1109/VETECS.2003.1207750
