Comparison and Analysis of Trisector Cell using Antenna Beam- width for CDMA Cellular Mobile Communication Systems

The cell sectorization techniques are widely used in cellular systems to reduce co-channel interference by means of directional antennas. Cell sectorization and improvement of the chip energy/others -interference ratio (Ec /Io ) are technologies to offer good quality of services (QoSs) and coverage for new and -sophisticated power control to achieve high capacity. In this study, we analyze and compare performances of two -trisector cell architectures with different antenna beam-widths-a wide-beam trisector cell (WBTC) and a -narrow-beam trisector cell (NBTC)-in order to achieve effective cell sectoring in CDMA and cellular -mobile -communication systems. These architectures are outcomes of cell sectorization, which is widely employed in cellular -systems for reducing co-channel interference. We verify the effectiveness and validity of the NBTC -architecture by theoretically comparing it with the WBTC architecture (using parameters such as softer -handoff and -interference ratio). Further, we analyze results of a simulation of the WBTC and NBTC and of a field -measurement performed in Namwon city in Korea. From the analysis, we find that the NBTC -architecture is more efficient than the WBTC architecture in minimizing interference from adjacent BSs and increasing cell coverage while maintaining a good QoS.