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실제적인 분산 비디오 부호화를 위한 분산 소스 부호화 시스템의 피드백 지연 문제 개선 방안
신승식(Seungshik Shin),신상윤(Sang-Yun Shin),장민(Min Jang),임대운(Dae-Woon Lim),김상효(Sang-Hyo Kim) 한국방송·미디어공학회 2012 방송공학회논문지 Vol.17 No.1
Because of the system delay caused by the number of feedback retransmission in Distributed Video Coding (DVC) scheme, it is difficult to realize practical DVC in many cases. In this paper low feedback retransmission Distributed Source Coding (DSC) scheme is proposed for practical DVC scheme based on Low-Density Parity-Check (LDPC) codes because DVC system is an specific application of DSC system. This DSC scheme is achieved by using different LDPC codes optimized in each different compression rate and using source revealing scheme. Optimized LDPC codes provide us much better decoding performance which causes the 57% reduced number of iteration. Consequently, the number of feedback retransmission is decreased by 50%.