Cross-layer optimization for video transmission over multirate GMC-CDMA wireless links
| Autor: | G. Partasides, S.K. Bandyopadhyay, Lisimachos P. Kondi |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Computer science
Orthogonal frequency-division multiplexing channel Video Recording Data_CODINGANDINFORMATIONTHEORY Sensitivity and Specificity Rate–distortion theory Computer Communication Networks Distortion rate-distortion optimization Image Interpretation Computer-Assisted Computer Science::Networking and Internet Architecture Electronic engineering Codec Telemetry Fading Computer Science::Information Theory Channel code Code division multiple access business.industry ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS Reproducibility of Results scalable video Signal Processing Computer-Assisted Chip Data Compression Image Enhancement wireless video transmission Computer Graphics and Computer-Aided Design generalized multicarrier code division multiple access (gmc-cdma) Intersymbol interference Rate–distortion optimization Transmission (telecommunications) networks business Software Algorithms Communication channel Computer network |
| Zdroj: | IEEE transactions on image processing : a publication of the IEEE Signal Processing Society. 17(6) |
| ISSN: | 1057-7149 |
| Popis: | In this paper, we consider the problem of video transmission over wireless generalized multicarrier code division multiple access (GMC-CDMA) systems. Such systems offer deterministic elimination of multiple access interference. A scalable video source codec is used and a multirate setup is assumed, i.e., each video user is allowed to occupy more than one GMC-CDMA channels. Furthermore, each of these channels can utilize a different number of subcarriers. We propose a cross-layer optimization method to select the source coding rate, channel coding rate, number of subcarriers per GMC-CDMA channel and transmission power per GMC-CDMA channel given a maximum transmission power for each video user and an available chip rate. Universal rate distortion characteristics (URDC) are used to approximate the expected distortion at the receiver. The proposed algorithm is optimal in the operational rate distortion sense, subject to the specific setup used and the approximation caused by the use of the URDC. Experimental results are presented and conclusions are drawn. Ieee Transactions on Image Processing |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|