Performance analysis of vertical handoff in Wi-Fi and WiMAX wireless networks

In this paper we investigate the performance of vertical handoff within Wi-Fi (Wireless Fidelity) and WiMAX (Worldwide Interoperability for Microwave Access) wireless networks. For this first we create the Wi-Fi and WiMAX wireless networks using ns2 (Network Simulator-2). The Traffic type is considered as CBR (Constant Bit Rate), modulation for Wi-Fi is QPSK and for WiMAX is 16QAM. The performance of horizontal handoff is measure in term of packet received by receiver, packet loss and the average throughput. The numerical and graphical illustration is carried out for better understand of the result.