Title :
Performance Evaluation of Tilt Beam Smart Antenna for Multicarrier Communication
Author :
Takyu, Osamu ; Nakagawa, Masao
Author_Institution :
Dept. of Inf. & Comput. Sci., Keio Univ., Yokohama
Abstract :
This paper evaluates the effectiveness of beam tilting in orthogonal frequency division multiplexing (OFDM) systems by a system level simulation. In a cellular system, when the delay spread of the received signal is large, the inter-symbol interference (ISI) as well as the inter-carrier interference (ICI) caused by the distortion of the subcarrier´s orthogonality are occured. Beam tilting at the base station can control the elevation antenna pattern and thus suppress the other cell interference. In addition, it can reduce the delay spread and thus suppress ISI and ICI. The results of the system level simulation show that beam tilting enhances the beam pattern within the cell edge while suppressing the pattern outside the cell edge; beam tilting improves the received SINR so channel capacity in increased
Keywords :
OFDM modulation; adaptive antenna arrays; antenna radiation patterns; cellular radio; channel capacity; intercarrier interference; interference suppression; intersymbol interference; ICI suppression; ISI suppression; OFDM system; beam tilting; cell edge; cellular system; channel capacity; elevation antenna pattern; intercarrier interference; intersymbol interference; multicarrier communication; orthogonal frequency division multiplexing; performance evaluation; smart antenna; subcarrier orthogonality; system level simulation; Adaptive arrays; Antenna arrays; Base stations; Channel capacity; Delay; Interference suppression; Intersymbol interference; Mobile antennas; OFDM; Signal to noise ratio;
Conference_Titel :
Communication systems, 2006. ICCS 2006. 10th IEEE Singapore International Conference on
Conference_Location :
Singapore
Print_ISBN :
1-4244-0411-8
Electronic_ISBN :
1-4244-0411-8
DOI :
10.1109/ICCS.2006.301443
