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  1. Article: Rural community health workers' readiness for mobile-phone based telemedicine uptake in India.

    Gandhi P, Aravind / Kathirvel, Soundappan / Chakraborty, Shyam

    Journal of rural medicine : JRM

    2022  Volume 17, Issue 3, Page(s) 166–170

    Abstract: Objective: ...

    Abstract Objective:
    Language English
    Publishing date 2022-07-01
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 2768933-5
    ISSN 1880-4888 ; 1880-487X
    ISSN (online) 1880-4888
    ISSN 1880-487X
    DOI 10.2185/jrm.2021-044
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Book: IMS multimedia telephony over cellular systems

    Chakraborty, Shyam

    VoIP evolution in a converged telecommunication world

    2007  

    Author's details ed. by Shyam Chakraborty .... [et al.]
    Keywords Cell phone systems ; Internet telephony
    Language English
    Size xxix, 339 p, ill., graph. Darst., 25cm
    Publisher Wiley
    Publishing place Chichester
    Document type Book
    Note Includes bibliographical references and index
    ISBN 9780470058558 ; 0470058552
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  3. Book ; Online: Intelligent Transport Systems

    Hasan, Syed Faraz / Chakraborty, Shyam / Siddique, Nazmul

    802.11-based Roadside-to-Vehicle Communications

    2013  

    Abstract: Focusing on the nuts and bolts of wireless network access for computers on board vehicles, this volume shows how in-car computerization now does much more than merely act as a glorified map-reader. Wireless communication is transforming road travel in ... ...

    Author's details by Syed Faraz Hasan, Nazmul Siddique, Shyam Chakraborty
    Abstract Focusing on the nuts and bolts of wireless network access for computers on board vehicles, this volume shows how in-car computerization now does much more than merely act as a glorified map-reader. Wireless communication is transforming road travel in ways previously undreamt of, allowing vehicles to "talk” to a wider network and monitor road conditions, potential delays and traffic congestion, all automatically. Toll payments can be made without opening the driver’s window on a cold day, while vehicles might themselves take active steps to avoid collisions. It is the connection between on-board computers and wireless access points, ubiquitous in most cities now, that is a key area of research. Moving vehicles transfer their communications to new points as they progress, and this causes delays, known as "handover latency”. In this book, new stochastic models are developed to map the disruption when connecting to 802.11 WLAN points. It details the application of stochastic tools to analyzing communication networks, as well as previous literature on handover latency and relevant mathematical modeling. Finally, it presents a scheme for monitoring traffic congestion using WLAN connectivity. This volume will be a useful addition to the libraries both of wireless communication students and those studying probability theory.
    Keywords Engineering ; Information systems ; Telecommunication ; Computer # Internet / Intranet ; Technik / Wissen # Fahrzeugtechnik ; Technik / Wissen # Nachrichtentechnik
    Language English
    Size Online-Ressource, digital
    Publisher Springer
    Publishing place New York, NY
    Document type Book ; Online
    Note Description based upon print version of record
    ISBN 1283622491 ; 9781283622493 ; 9781461432715 ; 9781461432722 ; 1461432715 ; 1461432723
    DOI 10.1007/978-1-4614-3272-2
    Database Former special subject collection: coastal and deep sea fishing

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  4. Book ; Online: Intelligent Transport Systems

    Hasan, Syed Faraz / Chakraborty, Shyam / Siddique, Nazmul

    802.11-based Roadside-to-Vehicle Communications

    2013  

    Abstract: Focusing on the nuts and bolts of wireless network access for computers on board vehicles, this volume shows how in-car computerization now does much more than merely act as a glorified map-reader. Wireless communication is transforming road travel in ... ...

    Author's details by Syed Faraz Hasan, Nazmul Siddique, Shyam Chakraborty
    Abstract Focusing on the nuts and bolts of wireless network access for computers on board vehicles, this volume shows how in-car computerization now does much more than merely act as a glorified map-reader. Wireless communication is transforming road travel in ways previously undreamt of, allowing vehicles to "talk” to a wider network and monitor road conditions, potential delays and traffic congestion, all automatically. Toll payments can be made without opening the driver’s window on a cold day, while vehicles might themselves take active steps to avoid collisions. It is the connection between on-board computers and wireless access points, ubiquitous in most cities now, that is a key area of research. Moving vehicles transfer their communications to new points as they progress, and this causes delays, known as "handover latency”. In this book, new stochastic models are developed to map the disruption when connecting to 802.11 WLAN points. It details the application of stochastic tools to analyzing communication networks, as well as previous literature on handover latency and relevant mathematical modeling. Finally, it presents a scheme for monitoring traffic congestion using WLAN connectivity. This volume will be a useful addition to the libraries both of wireless communication students and those studying probability theory.
    Keywords Engineering ; Information systems ; Telecommunication ; Computer Internet / Intranet ; Technik / Wissen Fahrzeugtechnik ; Technik / Wissen Nachrichtentechnik
    Language English
    Size Online-Ressource, digital
    Publisher Springer
    Publishing place New York, NY
    Document type Book ; Online
    Note Description based upon print version of record
    ISBN 1283622491 ; 9781283622493 ; 9781461432715 ; 9781461432722 ; 1461432715 ; 1461432723
    DOI 10.1007/978-1-4614-3272-2
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  5. Book ; Online: Intelligent transport systems

    Hasan, Syed Faraz / Chakraborty, Shyam / Siddique, N. H

    802.11-based roadside-to-vehicle communications

    2012  

    Abstract: Focusing on the nuts and bolts of wireless network access for computers on board vehicles, this volume shows how in-car computerization now does much more than merely act as a glorified map-reader. Wireless communication is transforming road travel in ... ...

    Institution ebrary, Inc
    Author's details Syed Faraz Hasan, Nazmul Siddique, Shyam Chakraborty
    Abstract Focusing on the nuts and bolts of wireless network access for computers on board vehicles, this volume shows how in-car computerization now does much more than merely act as a glorified map-reader. Wireless communication is transforming road travel in ways previously undreamt of, allowing vehicles to ""talk"" to a wider network and monitor road conditions, potential delays and traffic congestion, all automatically. Toll payments can be made without opening the driver's window on a cold day, while vehicles might themselves take active steps to avoid collisions. It is the connection between on-b
    Keywords Intelligent transportation systems ; Telematics
    Language English
    Size Online-Ressource (xix, 150 p), ill
    Publisher Springer
    Publishing place New York, NY
    Document type Book ; Online
    Note Includes bibliographical references and index
    ISBN 9781461432715 ; 9781461432722 ; 1461432715 ; 1461432723
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  6. Article: On the characterization of Aloha in underwater wireless networks

    De, Swades / Mandal, Priyatosh / Chakraborty, Shyam S

    Mathematical and computer modelling. 2011 June, v. 53, no. 11-12

    2011  

    Abstract: Standard analyses of wireless random access protocols that are available in the literature assume negligible propagation delay between any two nodes. This assumption holds good in reasonably short-range terrestrial RF (radio frequency) wireless networks. ...

    Abstract Standard analyses of wireless random access protocols that are available in the literature assume negligible propagation delay between any two nodes. This assumption holds good in reasonably short-range terrestrial RF (radio frequency) wireless networks. On the contrary, in wireless communications involving acoustic wave propagation, as in underwater wireless networks, even short distance propagation has appreciably large propagation delay. This observation has led to several recent simulation and experimental studies on underwater Aloha and slotted-Aloha (S-Aloha) protocols and also a few new proposals on random access protocols for underwater wireless ad hoc networks (UWN). To study the efficiency of more advanced multiaccess communication protocols for UWN, it is important to benchmark their performances with respect to the two basic random access protocols, Aloha and S-Aloha. This paper provides an analytic framework to capture the performance of Aloha and S-Aloha protocols in an underwater environment with high and random internodal signal propagation delay. The performance of underwater Aloha and S-Aloha are contrasted with those in short-range terrestrial RF wireless networks. The analysis shows that random internodal propagation delay has no effect on the underwater Aloha performance. It also sheds light on the throughput degradation of underwater S-Aloha with a slotting concept that achieves RF S-Aloha equivalent one-slot vulnerability. Additionally, a modified slotting concept is introduced where the slot size is judiciously reduced such that even by allowing some collisions the overall system throughput can be increased. Our calculations show that, with the modified slotting approach up to 17% throughput performance gain can be achieved over the naive (RF S-Aloha equivalent) slotting approach in UWN. Our analytic results are supported by discrete event simulations.
    Keywords acoustics ; models ; radio waves
    Language English
    Dates of publication 2011-06
    Size p. 2093-2107.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 2002543-9
    ISSN 0895-7177
    ISSN 0895-7177
    DOI 10.1016/j.mcm.2010.06.041
    Database NAL-Catalogue (AGRICOLA)

    Full text online

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  7. Book: Voice over IP wireless heterogeneous networks

    Fathi, Hanane / Chakraborty, Shyam S / Prasad, Ramjee

    signaling, mobility, and security

    (Signals and communication technology)

    2009  

    Author's details Hanane Fathi; Shyam S. Chakraborty; Ramjee Prasad
    Series title Signals and communication technology
    Language English
    Size XXIX, 226 S., graph. Darst., 235 mm x 155 mm
    Publisher Springer
    Publishing place New York, NY
    Document type Book
    Note Literaturangaben
    ISBN 1402066309 ; 9781402066306
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  8. Book ; Thesis: Efficient access methods for multiservices mobile networks

    Chakraborty, Shyam Sundar

    (Acta polytechnica Scandinavica : Electrical engineering series ; 93)

    1998  

    Author's details Shyam Sundar Chakraborty
    Series title Acta polytechnica Scandinavica : Electrical engineering series ; 93
    Language English
    Size 22 S
    Publisher Finnish Acad. of Technology
    Publishing place Espoo
    Document type Book ; Thesis
    Thesis / German Habilitation thesis Univ. of Technology, Diss.--Espoo, 1998
    ISBN 9525148793 ; 9789525148794
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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