International Symposium on Antennas and Propagation
Effects of BS Configuration on Channel Capacity of MIMO System in Urban Area
Sirichai HEMRUNGROTE, Toshikazu HORI, Mitoshi FUJIMOTO,
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Many recent researches have concluded that Multiple-Input Multiple-Output (MIMO) wireless communication architecture promises an approach to achieve high bandwidth efficiencies and allow robustness against channel fading and interference over traditional single antenna systems , . MIMO wireless channels can be simply defined as a link for which both transmitting and receiving ends equipped with multiple antenna elements. This advanced communication technology has potential to resolve the problem in traffic capacity for the future networks. However, the performance of MIMO wireless communication systems has been considered that it strongly depends on the propagation environment . In this paper, the propagation characteristics such as arrival direction, intensity, and delay time between the base station and respective terminal are calculated by using ray-tracing method. This simulation technique has been employed for SDMA system in an urban area  and an indoor MIMO system . Besides those, there is another system that promises significant to be considered; it is a MIMO system in an urban environment. The performance of this system in term of channel capacity is herein studied. Effects of configuration such as average building height, the height of base station antenna, number of antenna elements, and element spacing are evaluated. Analysis model for urban propagation model, distribution of building height and width and channel capacity calculation is described in Sec. 2. Effects of configuration of the base station on channel capacity are then discussed in Sec. 3. In Sec. 4, the contribution of this paper is concluded.