Quality-Driven Joint Rate and Power Adaptation for Scalable Video Transmissions Over MIMO Systems
| Autor: | Jenq-Neng Hwang, Xiang Chen, James A. Ritcey, Chung-Nan Lee, Fu-Ming Yeh |
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| Rok vydání: | 2017 |
| Předmět: |
Computer science
MIMO Real-time computing ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION 020206 networking & telecommunications Data_CODINGANDINFORMATIONTHEORY 02 engineering and technology Transmitter power output Scalable Video Coding Modulation Diversity gain 0202 electrical engineering electronic engineering information engineering Media Technology 020201 artificial intelligence & image processing Forward error correction Electrical and Electronic Engineering Bitstream Decoding methods Communication channel |
| Zdroj: | IEEE Transactions on Circuits and Systems for Video Technology. 27:366-379 |
| ISSN: | 1558-2205 1051-8215 |
| DOI: | 10.1109/tcsvt.2015.2511815 |
| Popis: | We propose a joint rate and power adaptation scheme to maximize the decoding quality for scalable video coding (SVC)-based video transmissions over multi-input multioutput (MIMO) systems. The rate adaptation in our proposed scheme includes selection of the best modulation and coding schemes, set of spatial channels, number of SVC layers (source coding rates), and their corresponding application layer forward error correction (APP-FEC) coding rates. The power adaptation involves the proper allocation of the power to each antenna in the MIMO system. SVC-based video transmissions require unequal error protection (UEP) for different SVC layers due to the inter-layer dependency. In most of the previous works, the bit stream of each particular SVC layer is allocated to one spatial channel and the UEP is achieved by transmitting the more important SVC layers through the spatial channels with higher channel gains. However, in our proposed scheme, the bit stream of each particular SVC layer is distributed to multiple spatial channels so that additional diversity gain can be exploited by applying APP-FEC. The UEP can also be achieved by allocating different APP-FEC coding rates on each video layer. Moreover, transmit power allocation is also effectively and jointly determined to improve the system performance. The effectiveness and favorable performance of our proposed scheme are shown by simulations with H.264 SVC traces of high-definition video clips over MIMO systems. |
| Databáze: | OpenAIRE |
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