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Erschienen in:
2021 | OriginalPaper | Buchkapitel
Joint Source-Channel Coding Scheme Based on UEP-Raptor
verfasst von : Chang Liu, Wenchao Yang, Dezhi Li, Zhenyong Wang, Zhenbang Wang, Haibo Lv
Erschienen in: Communications, Signal Processing, and Systems
Verlag: Springer Singapore
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Abstract
Raptor code is a solution used for forward error correction at the application layer during multimedia transmission. The amount of multimedia transmission data is huge. In order to transmit high-quality image and video under a fixed bandwidth, data must be compressed before transmission, and compression techniques such as jpg picture compression, MPEG-based video compression, and perceptual compression ROI coding are used. In this way, the compressed data has different reliability levels during transmission. This paper proposes a fountain code with unequal error protection, combined with image compression to construct a joint source-channel coding scheme based on UEP-Raptor code. Finally, the experiment proves that the adoption of this scheme has effectively improved the data transmission quality.