Fundamentals of statistical signal processing: estimation theory
Fundamentals of statistical signal processing: estimation theory
FOCS '02 Proceedings of the 43rd Symposium on Foundations of Computer Science
Emerging cognitive radio technology: Principles, challenges and opportunities
Computers and Electrical Engineering
Spectrum sensing algorithms for primary detection based on reliability in cognitive radio systems
Computers and Electrical Engineering
Robust transmission of scalable video stream using modified LT codes
Computers and Electrical Engineering
Experience cooperative sharing in cross-layer cognitive radio for real-time multimedia communication
Proceedings of the 4th International Conference on Cognitive Radio and Advanced Spectrum Management
Spectral efficiency of cognitive radio networks under interference constraint and QoS guarantees
Computers and Electrical Engineering
Sensing-Throughput Tradeoff for Cognitive Radio Networks
IEEE Transactions on Wireless Communications
Self-Organizing Maps for advanced learning in cognitive radio systems
Computers and Electrical Engineering
IEEE Journal on Selected Areas in Communications
A new, fast, and efficient image codec based on set partitioning in hierarchical trees
IEEE Transactions on Circuits and Systems for Video Technology
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This study addresses the reliability of secondary multimedia transmissions under delay constraints and lossy conditions. In particular, a cognitive radio (CR) infrastructure collocated with a licensed network is considered. The primary traffic evolves following a Poisson distribution. During the sensing operations, the best spectrum opportunities are identified using a new subchannel quality metric. To mitigate the effects of packet loss, the use of a multiple description coding (MDC) framework of the unequal loss protection (ULP) class is explored. The performance of the proposed scheme is evaluated by comparing the results with those of the traditional equal loss protection (ELP) technique. Finally, a general cross layer model is proposed to ensure end-to-end message delivery in realistic cognitive radio contexts, which are characterized by difficult primary signal detection and random primary interruptions, in addition to subchannel impairments. Numerical simulations are conducted to investigate the peak signal-to-noise ratio (PSNR) benefits of the proposed system using both ULP and ELP schemes.