NDLI: MAC-level partial checksum for H.264 video transmission over 802.11 ad hoc wireless networks

Content Provider	IEEE Xplore Digital Library
Author	Masala, E. Bottero, M. De Martin, J.C.
Copyright Year	2005
Description	Author affiliation: Dipartimento di Autom. e Informatica, Politecnico di Torino, Turin, Italy (Masala, E.; Bottero, M.; De Martin, J.C.)
Abstract	We present a technique to enhance real-time video transmissions over 802.11-based ad hoc networks. We propose to limit the coverage of the error detection mechanism to the most error sensitive bit class contained in video packets. Packets are retransmitted only if errors affect those bits, instead of retransmitting all corrupted packets irrespective of error positions. The expectation was that the negative effects of errors in the less sensitive bits should be more than adequately counterbalanced by the lower number of discarded video packets. Moreover, the lower number of retransmissions should reduce network load, with positive effects on all the transmissions. We simulated the transmission of H.264 video over an ad hoc scenario with a varying number of relay nodes using ns with experimental bit error traces. Results show consistent video quality improvements (up to 1 dB PSNR) as well as network load reduction with respect to state-of-the-art techniques, such as unequal error protection based on different retry limits.
Starting Page	2864
Ending Page	2868
File Size	129654
Page Count	5
File Format	PDF
ISBN	0780388879
ISSN	15502252
DOI	10.1109/VETECS.2005.1543870
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-05-30
Publisher Place	Sweden
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless networks Media Access Protocol Ad hoc networks Error correction codes Mobile ad hoc networks Delay Wireless LAN Wireless application protocol Multimedia communication Streaming media IEEE 802.11 partial checksum ad hoc networks H.264 video transmission
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Electrical and Electronic Engineering Computer Science Applications

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in