Joint-source-channel coding scheme for scalable video-coding-based digital video broadcasting, second generation satellite broadcasting system

摘要

We propose a joint-source-channel coding (JSCC) schementhat can provide and sustain high-quality video service in spite of de-nteriorated transmission channel conditions of the second generationnof the digital video broadcasting (DVB-S2) satellite broadcasting ser-nvice. Especially by combining the layered characteristics of the SVCn(scalable video coding) video and the robust channel coding capabil-nity of LDPC (low-density parity check) employed for DVB-S2, a newnconcept of JSCC for digital satellite broadcasting service is devel-noped. Rain attenuation in high-frequency bands such as the Ka bandnis a major factor for lowering the link capacity in satellite broadcastingnservice. Therefore, it is necessary to devise a new technology to dy-nnamically manage the rain attenuation by adopting a JSCC schementhat can apply variable code rates for both source and channel cod-ning. For this purpose, we develop a JSCC scheme by combiningnSVC and LDPC, and prove the performance of the proposed JSCCnscheme by extensive simulations where SVC coded video is trans-nmitted over various error-prone channels with AWGN (additive whitenGaussian noise) patterns in DVB-S2 broadcasting service.