Improving system performance of ad hoc wireless network with directional antenna

It has been shown that use of directional antenna in the context of ad hoc wireless networks can largely reduce radio interference, thereby improving the utilization of wireless medium. However, that alone does not always guarantee improvement in overall system performance. In this paper, we have identified several criteria and investigated their interrelationships and impact on overall system performance in this context. Our methodology uses optimisation techniques using multicriteria decision analysis. We use analytic hierarchy process (AHP) to identify relative weights of different criteria under different application-specific scenario in order to solve the optimisation problem for each scenario by TOPSIS approach. The result shows that the parameter setting required to get optimum performance is application-specific; depending on the situation or application-scenario, several parameters need to be controlled to get better system performance.