Single Layer Video Streaming Over Spectrum Underlay CR Networks

Dynamic Spectrum Allocation (DSA) in Cognitive Radio (CR) will provide a chance to secondary users to opportunistically use a portion of spectrum, which actually belongs to primary users (PU). When primary users are not using their spectrum, it allows the secondary users to transmit their data. However, the issue that is to be discussed here is , SU transmission experiences interruption when the PU needs to use its spectrum. Hence, the objective of this paper is to provide Secondary user an uninterrupted multimedia data services (video transmission) by making it to receive data in underlay mode of CR. Here the base layer video streaming of a Scalable Video Coding (SVC) is a best solution for the underlay mode CR which is characterized by low data rate and low power. The download mode of video transmission is considered for underlay mode of SVC video transmission. Simulation results show the transmission of video in the underlay CR is a challenging task. However, acceptable video quality can be achieved with high protection of the base layer video of the SVC.