Seamless Handover of Video Streamingin 4G Wireless Network

This paper presents QoS aware seamless vertical handover system for video streaming over wireless network. When the user is moving, the signal strength varies which may resultin buffering of the video. Various modulation techniques are used for continuous streaming of video and to resolve this issue. OFDM technique is used for multi carrier transmission with modulation formats such as BPSK and 16QAM.The system modulator switches between the two modulation schemes depending upon the Signal to Noise Ratio (SNR).In order to achieve continuous streaming of video the video is compressed at the time of handover. Experimental results shows that the performance of the system is better