Research Article
Research on Multimedia Transmission over Cognitive Radio Networks
@INPROCEEDINGS{10.4108/eai.15-8-2015.2260812, author={Xinlin Huang and Xiang Wu and Jun Wu and Jian Chen}, title={Research on Multimedia Transmission over Cognitive Radio Networks}, proceedings={10th EAI International Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2015}, month={9}, keywords={cognitive radio networks packet allocation multimedia transmission s-aloha system}, doi={10.4108/eai.15-8-2015.2260812} }- Xinlin Huang
Xiang Wu
Jun Wu
Jian Chen
Year: 2015
Research on Multimedia Transmission over Cognitive Radio Networks
CHINACOM
IEEE
DOI: 10.4108/eai.15-8-2015.2260812
Abstract
In cognitive radio network (CRN), the utilization of spectrum resource can be dramatically improved with the secondary user (SU) opportunistically access the licensed channels. However, how to allocate the spectrum holes to each SU with the least influence on primary user (PU) appropriately. In order to estimate the packet delay in the multimedia over CRN and optimize the QoS performance of the whole system, we propose a novel spectrum sharing scheme based on S-ALOHA system. And then we analysis the probability of PUs occupying the licensed channel once again with the discrete Markov model. Moreover we consider the delay and throughput to describe the performance of multimedia transmission, and propose a dynamic algorithm to generate an optimal packet allocation strategy for each packet with the maximum utility function value. In the simulation part, we study the utility function value after packet loading over each licensed channel.