Performance Evaluation of Fiber Wireless (FiWi) Access Network Using Position Optimization of ONUs

Aim: Optimize position of ONUs using Whale Optimization Algorithm (WOA) to make cost-effective FiWi network. Background: Fiber-Wireless (FiWi) is a network which provides higher bandwidth and better stability at lower cost to the users. The placement of network components (such as ONU) in FiWi is of utmost importance since it comes under the network planning. ONU placement mainly focuses on this thing that how efficiently ONUs are placed so that with fewer number of ONUs all the routers get interconnected. Objective: Optimize position of ONUs using WOA algorithm such that, with minimum ONUs all routers can connects with satisfactory network performance. Methods: Extensive simulation is carried out to implement proposed work. A simulation model and code is developed in MATLAB to get the results for existing and proposed algorithms for varying number of variables such as number of ONUs, wireless routers, grid sizes etc. Result: We compare the performance of proposed algorithm with existing algorithm for varying grid sizes as well as number of wireless routers. Simulation results show the worthiness of proposed work. Conclusion: The present work optimizes the location of ONUs using encircling prey mechanism and spiral update mechanism of WOA. Results show that proposed work gives best result in terms of minimum number of ONUs in the network with almost comparable PDR and TTDPN with that of deterministic.