Scalable video broadcasting (SVB) i

Scalable video broadcasting (SVB) is the simulticast of video programs with different qualities to fullfill different channel conditions or reception demands, which is a special case of multiple service broadcasting. with the aid of special source coding and physical layer sub-channel technique,the goal of SVB can be achieved. To evaluate SVB scheme, joint SNR threshold, denoted by (SNR),is the minimum SNRs required for successful receptions subject to the transmission rate requirements of different layers, while the joint transmission rate, denote by (R) is the transmission rates of different layer subject to the differentiated SNR thresholds