| Cochannel interference is one of the limiting factors in determining the capacity of a code division multiple access (CDMA) network. A number of new architectures and algorithms have been proposed in the literature to minimize the effects of cochannel interference. To consider a new architecture, it is necessary to focus on system configurations such as, directional antennas, sectorization and microzoning schemes, power control, near-far-effect, and fading, which limits the capacity of a cellular system. Furthermore, performance simulation needs to be performed using various cluster sizes, different antenna beam width, and different propagation path loss exponent with dynamic channel assignment, otherwise, the performance evaluation will be incomplete and inaccurate. However, to the best the author's knowledge, no report has yet been published considering all of the aforementioned factors. Thus the objective of this work is to propose a new architecture and evaluate its performance by incorporating all of the above-mentioned factors so that more reliable and better results are obtained when compared to the existing architectures and results. Simulation results obtained using the MATLAB software package show that the microzoning scheme outperforms other existing techniques. |
