On Video Multicast in Cognitive Radio Networks Export

@inproceedings{citeulike:4773609, abstract = {We investigate the challenging problem of enabling multicast video service in emerging cognitive radio (CR) networks. We propose a cross-layer optimization approach to multicast video in CR networks. Specifically, we model CR video multicast as an optimization problem, while considering important design factors including scalable video coding, video rate control, spectrum sensing, dynamic spectrum access, modulation, scheduling, retransmission, and primary user protection. The objective is to optimize the overall received video quality as well as achieving proportional fairness among multicast users, while keeping the interference to primary users below a prescribed threshold. Although the problem can be solved using advanced optimization techniques, we propose a sequential fixing algorithm and a greedy algorithm with low complexity and proven optimality gap. Our simulations using MPEG-4 fine grained scalability (FGS) demonstrate the efficacy and superior performance of the proposed approach as compared with an alternative equal allocation scheme.}, author = {Hu, Donglin and Mao, Shiwen and Reed, J. H.}, booktitle = {INFOCOM 2009. The 28th Conference on Computer Communications. IEEE}, citeulike-article-id = {4773609}, citeulike-linkout-0 = {http://dx.doi.org/10.1109/INFCOM.2009.5062147}, citeulike-linkout-1 = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5062147}, day = {02}, doi = {10.1109/INFCOM.2009.5062147}, journal = {INFOCOM 2009, IEEE}, keywords = {cognitive\_radio, multicast, video}, month = {June}, pages = {2222--2230}, posted-at = {2009-11-01 15:23:26}, priority = {2}, title = {On Video Multicast in Cognitive Radio Networks}, url = {http://dx.doi.org/10.1109/INFCOM.2009.5062147}, year = {2009} }

TY - CONF ID - citeulike:4773609 L3 - citeulike-article-id:4773609 N2 - We investigate the challenging problem of enabling multicast video service in emerging cognitive radio (CR) networks. We propose a cross-layer optimization approach to multicast video in CR networks. Specifically, we model CR video multicast as an optimization problem, while considering important design factors including scalable video coding, video rate control, spectrum sensing, dynamic spectrum access, modulation, scheduling, retransmission, and primary user protection. The objective is to optimize the overall received video quality as well as achieving proportional fairness among multicast users, while keeping the interference to primary users below a prescribed threshold. Although the problem can be solved using advanced optimization techniques, we propose a sequential fixing algorithm and a greedy algorithm with low complexity and proven optimality gap. Our simulations using MPEG-4 fine grained scalability (FGS) demonstrate the efficacy and superior performance of the proposed approach as compared with an alternative equal allocation scheme. JF - INFOCOM 2009, IEEE EP - 2230 TI - On Video Multicast in Cognitive Radio Networks T2 - INFOCOM 2009. The 28th Conference on Computer Communications. IEEE SP - 2222 KW - cognitive_radio KW - multicast KW - video AU - Hu, Donglin AU - Mao, Shiwen AU - Reed, JH PY - 2009/06/02/ UR - http://dx.doi.org/10.1109/INFCOM.2009.5062147 ER -