Please wait, while we are loading the content...
Please wait, while we are loading the content...
| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Richard, Marc N. |
| Copyright Year | 1983 |
| Description | Author affiliation: Joint Tactical Communications Office, Fort Monmouth, New Jersey (Richard, Marc N.) |
| Abstract | Bit-oriented data link protocols (e.g., ADCCP/HDLC) have recently been introduced into tactical data communication systems to provide reliable, point-to-point transfer of packetized command and control $(C^{2})$ information and other data. These standardized procedures, developed to function in the relatively benign environment of public/common carrier networks, offer significant advantages over the previously employed character-oriented protocols(e.g., AUTODIN Mode I). However, in the severe tactical communication environment of high bit error rates (worse than $10-^{4}),$ long propagation delays (tactical satellite links), and limited resources (small buffer sizes and limited processor capabilities), the standard ARQ techniques of these protocols cause buffer congestion and significant loss of data thereby seriously degrading system performance. This paper summarizes the performance constraints on tactical data communications. Performance predictions based upon prior analytical work on the ADCCP protocols are presented and used to validate the performance results of a computer simulation of a tactical data communications link. Performance degradation as a function of increasing BER and propagation delay is graphically protrayed. A modification to the standard ARQ techniques is then proposed. Results of this "hybrid" protocol's simulation, verified analytically, show significant efficiency improvement and, consequently, enhanced system performance. Implications for the entire communication system are then addressed. This paper reports the investigations conducted within a single DoD activity. It does not represent a coordinated DoD position nor does it suggest universal implementation of nonstandard protocols. |
| Starting Page | 481 |
| Ending Page | 485 |
| File Size | 743102 |
| Page Count | 5 |
| File Format | |
| DOI | 10.1109/MILCOM.1983.4794742 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1983-10-31 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Protocols Data communication Bit error rate Propagation delay Automatic repeat request Degradation System performance Performance analysis Telecommunication network reliability Command and control systems |
| Content Type | Text |
| Resource Type | Article |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| 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 |
|
Loading...
|