대한전자공학회논문지SP (Journal of the Institute of Electronics Engineers of Korea SP)

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

이동방송수신환경에서 MPEG-4 계층적 비디오 전송을 위한 결합 소스/채널 부호화에 관한 연구

Studies on Joint Source/Channel Coding for MPEG-4 Scalable Video Transmission in Mobile Broadcast Receiving Environments

  • 이운문 ((주)단암시스템즈) ;
  • 손원 (경희대학교 전파공학과)
  • Lee Woon-Moon (Danam Systems Inc.) ;
  • Sohn Won (Dept. of Radio Communication Engineering, Kyung Hee University)
  • 발행 : 2005.05.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

이 논문은 국내 디지털 오디오 방송(Digital Audio Broadcasting, DAB)의 표준으로 채택된 Eureka 147 DAB 시스템에 결합 소스/채널 부호화 기법(Joint Source/Channel Coding, JSC)을 적용한 데이터 전송시스템의 기본틀을 제안한다. 제안전송시스템의 소스부호화기는 기존의 SNR-계층적 부호화(SNR-Scalability) 기법의 발전된 형태인 MPEG-4 FGS(Fine Granular Scalability) 비디오부호화기, 채널부호화기로는 상이오류보호(Unequal Error Protection, UEP)에 효율적인 RCPC 부호화기 그리고 변조방식은 QPSK를 적용하였다. 채널환경은 랜덤잡음환경과 이동수신환경을 고려하였다. 이 논문에서는 여러 가지 채널 상태(Es/No)에 따른 율-왜곡특성에 대해 분석하여 소스비트율과 채널부호율 간에 최적의 상충점(Trade-off point)을 결정하였고, DAB의 계층적 비디오 전송을 위한 FGS-JSC 기법이 적용되었을 때와 단일계층의 고정부호율 전송의 경우를 비교하여 FGS-JSC 기법의 우수함을 보였다.

In this paper, we develop an approach toward JSC(Joint Source-Channel Coding) method for MPEG-4 based FGS(Fine Granular Scalability) video coding and transmission in fixed and mobile receiving environment(Digital Audio Broadcasting, DAB). The source coder used MPEG-4 FGS video codec, the channel coder used RCPC(Rate Compatible Punctured Convolution) code and the modulation method used QPSK modulation. We have considered channel environment of AWGN and mobile receiving environment. This study determined optimum Trade-off point between source bit rate and channel coding rate in variable channel states. We compared FGS-JSC method and general single layer CBR(Constant Bit Rate) transmission. In this results, FGS-JSC was appeared better performance than CBR transmission.

키워드

참고문헌

  1. Gene Cheung, Avideh Zakhor, 'Bit Allocation for Joint Source/Channel Coding of Scalable Video,' IEEE Transactions on Image Processing, vol. 9, no 3, March 2000 https://doi.org/10.1109/83.826773
  2. 이운문, 신재은, 손원, 이수인, 이현, 'MPEG-4 동영상 부호화기를 이용한 조인트 소스/채널 부호화에 관한 연구,' 한국방송공학회 추계 학술대회 논문집, pp 99-103, November 2002
  3. Lisimachos P. Kondi, Faisal Ishtiaq, Aggelos K. Katsaggelos, 'Joint Source-Channel Coding for Motion-Compensated DCT-Based SNR Scalable Video,' IEEE Transactions on Communications, vol. 11, no 9, September 2002 https://doi.org/10.1109/TIP.2002.802507
  4. T. C. Ancheta,Jr., Joint source channel coding, Ph.D. dissertation, Univ, Notre Dame, Aug. 1977
  5. C. E. Shanon, 'A mathematical theory of communication,' Bell Systems Technical Journal 27, pp.379-423 & 623-656, July 1948
  6. J. W. Modestino and D.G. Daut, 'Combined source channel coding of images,' IEEE Transactions on Communications, vol. COM-27, pp.1644-1659, Nov. 1979 https://doi.org/10.1109/TCOM.1979.1094335
  7. C. E. Sundberg, 'The effect of single bit errors in standard nonlinear PCM systems,' IEEE Transactions on Communications, vol. COM-24, pp.1062 -1064, June 1976 https://doi.org/10.1109/TCOM.1976.1093418
  8. N. Chaddha and S. Diggavi, 'A Frame-Work for Joint Source-Channel Coding of Images over Time-Varying Wireless Channels,' Proc. Int'l Conf. Image Processing, Switzerland, Sept. 1996 https://doi.org/10.1109/ICIP.1996.560609
  9. A. Alavi, R. Link and S. Kallel, 'Adaptive Unequal Error Protection for Subband Image Coding,' IEEE Transactions on Broadcasting, vol. 46, no.3, Sept. 2000 https://doi.org/10.1109/11.892156
  10. K. Ramchandran, A. Ortega, K. Metin Uz, M. Vetterli, 'Multiresolution Broadcast for Digital HDTV using Joint Source/Channel Coding,' IEEE Journal on Selected Areas in Communications, vol. 11, no 1, January 1993 https://doi.org/10.1109/49.210540
  11. MPEG-4 Overview, ISO/IEC JTC/SC29/WG11 N4030
  12. MPEG-4 Video Verification Model Version 18.0, ISO/IEC JTC1/SC29/WG11 N3908
  13. Joachim Hagenauer, 'Rate-Compatible Punctured Convolutional Codes(RCPC Codes) and their Applications,' IEEE Transactions on Communications, vol. 36, no 4, April 1988 https://doi.org/10.1109/26.2763
  14. Sayood Khalid, Introduction to Data Compression, Morgan Kaufmann, pp. 194-210, 2000
  15. Hayder M. Radha, Mihaela van der Schaar, and Yingwei Chen, 'The MPEG-4 Fine-grained scalable video coding method for multimedia streaming over IP,' IEEE Transactions on Multimedia, vol. 3, no. 1, March 2001 https://doi.org/10.1109/6046.909594
  16. Hiroshi Harada & Ramjee Prasad, Simulation and Software Radio for mobile communications, Artech House, 2002. 5
  17. King N. Ngan, Chi W. Yap, Keng T. Tan, Video Coding for Wireless Communication Systems, MARCEL DEKKER, INC. 2001