The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
현대에는 다양한 실내 무선 통신 시스템에 MPEG-4 영상 압축 기술이 보편적으로 적용되고 있다. 효율적인 시스템 설계는 주로 채널 코딩 프로세스의 복잡성을 줄이는 동시에 수신 이미지의 품질을 유지하는 것을 목표로 하는 공동 소스 채널 코딩 알고리즘에 의존합니다. 본 논문에서는 Rician 저속 플랫 블록 페이딩 채널을 위한 랜덤 및 준랜덤 인터리버를 모두 사용하여 MAP 소스 제어 채널 디코더를 설계합니다. MAP-Viterbi 디코더는 MPEG-4 HFS 패킷의 제로트리 심볼 시퀀스의 잔여 중복성을 사용합니다. 인터리빙 프로세스는 블록 페이딩 효과를 방지하기 위해 전체 채널 코딩 프로세스 후에 수행됩니다. 컴퓨터 시뮬레이션은 평균 WER 및 PSNR(dB) 측면에서 시스템 성능을 요약합니다. 인터리버를 사용하면 ML 및 MAP 디코딩 모두에서 약 15-17dB의 PSNR이 크게 향상됩니다. 또한 많은 경우에 인터리버와 함께 MAP 디코딩을 사용하면 약 0.2-0.4dB 정도 더 향상된 성능을 얻을 수 있습니다.
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Srijidtra MAHAPAKULCHAI, Chalie CHAROENLARPNOPPARUT, "MAP Source-Controlled Channel Decoding with Interleavers for MPEG-4 Image Indoor Wireless Transmission Systems" in IEICE TRANSACTIONS on Communications,
vol. E92-B, no. 10, pp. 3052-3059, October 2009, doi: 10.1587/transcom.E92.B.3052.
Abstract: In the modern day, MPEG-4 image compression technique have been commonly applied in various indoor wireless communication systems. The efficient system design mostly relies on the joint source channel coding algorithms, which aim to reduce the complexity of channel coding process, while maintaining the quality of the receiving images. In this paper, we design the MAP source-controlled channel decoders with both random and semirandom interleavers for Rician slow flat block-fading channels. The MAP-Viterbi decoder employs the residual redundancy from zerotree symbol sequences of MPEG-4 HFS packets. The interleaving processes are done after the overall channel coding process to combat the block-fading effects. The computer simulations summarize the system performance in terms of average WER and PSNR (dB). With the interleavers, the significant improvement in PSNR of about 15-17 dB is obtained for both ML and MAP decoding. Also in many cases, we obtain more improvement of about 0.2-0.4 dB for using MAP decoding with the interleavers.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E92.B.3052/_p
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@ARTICLE{e92-b_10_3052,
author={Srijidtra MAHAPAKULCHAI, Chalie CHAROENLARPNOPPARUT, },
journal={IEICE TRANSACTIONS on Communications},
title={MAP Source-Controlled Channel Decoding with Interleavers for MPEG-4 Image Indoor Wireless Transmission Systems},
year={2009},
volume={E92-B},
number={10},
pages={3052-3059},
abstract={In the modern day, MPEG-4 image compression technique have been commonly applied in various indoor wireless communication systems. The efficient system design mostly relies on the joint source channel coding algorithms, which aim to reduce the complexity of channel coding process, while maintaining the quality of the receiving images. In this paper, we design the MAP source-controlled channel decoders with both random and semirandom interleavers for Rician slow flat block-fading channels. The MAP-Viterbi decoder employs the residual redundancy from zerotree symbol sequences of MPEG-4 HFS packets. The interleaving processes are done after the overall channel coding process to combat the block-fading effects. The computer simulations summarize the system performance in terms of average WER and PSNR (dB). With the interleavers, the significant improvement in PSNR of about 15-17 dB is obtained for both ML and MAP decoding. Also in many cases, we obtain more improvement of about 0.2-0.4 dB for using MAP decoding with the interleavers.},
keywords={},
doi={10.1587/transcom.E92.B.3052},
ISSN={1745-1345},
month={October},}
부
TY - JOUR
TI - MAP Source-Controlled Channel Decoding with Interleavers for MPEG-4 Image Indoor Wireless Transmission Systems
T2 - IEICE TRANSACTIONS on Communications
SP - 3052
EP - 3059
AU - Srijidtra MAHAPAKULCHAI
AU - Chalie CHAROENLARPNOPPARUT
PY - 2009
DO - 10.1587/transcom.E92.B.3052
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E92-B
IS - 10
JA - IEICE TRANSACTIONS on Communications
Y1 - October 2009
AB - In the modern day, MPEG-4 image compression technique have been commonly applied in various indoor wireless communication systems. The efficient system design mostly relies on the joint source channel coding algorithms, which aim to reduce the complexity of channel coding process, while maintaining the quality of the receiving images. In this paper, we design the MAP source-controlled channel decoders with both random and semirandom interleavers for Rician slow flat block-fading channels. The MAP-Viterbi decoder employs the residual redundancy from zerotree symbol sequences of MPEG-4 HFS packets. The interleaving processes are done after the overall channel coding process to combat the block-fading effects. The computer simulations summarize the system performance in terms of average WER and PSNR (dB). With the interleavers, the significant improvement in PSNR of about 15-17 dB is obtained for both ML and MAP decoding. Also in many cases, we obtain more improvement of about 0.2-0.4 dB for using MAP decoding with the interleavers.
ER -