NDLI: Multi-user wireless access to a digital cable system

Content Provider	IEEE Xplore Digital Library
Author	Weinstein, S. Lechleider, J.
Copyright Year	2004
Abstract	We describe a system, a wireless overlay on existing hybrid fiber/coax digital packet-based networks, for high-speed, short-range wireless access to video programming services, to the Internet, and to the telephone, cellular mobile, and other communication networks. Wireless access may be provided to both fixed (residential) users and to passersby with portable devices. Smart transponder nodes and antennas are densely distributed along the access cable line for wireless communication with user nodes. The antennas along a cable access line form an adaptive "superantenna" that is excited, for downstream transmission, by short sequences of vector signals that cancel radio interference. These excitations can be derived from a stable adaptive process. Upstream transmission from a subscriber node is designed so that the vector received by the superantenna can be used to separate this signal from that of other users' transmitters. Cooperation among end users is not necessary but is possible. Antenna excitation signals are controlled from the system headend, based on processing that uses measured channel parameters between the sets of access line and user antennas. A program controller in the headend, responding to end user requests, manages delivery of selected program streams and other customer services through generation of superimposed superantenna excitation signals that target multiple end users. This model offers opportunities for flexible capacity allocations and a wide range of programming and customized private.
Starting Page	442
Ending Page	446
File Size	279143
Page Count	5
File Format	PDF
ISBN	0780383443
ISSN	15253511
DOI	10.1109/WCNC.2004.1311585
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-03-21
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Hybrid fiber coaxial cables Optical fiber cables Optical fiber communication Optical fiber devices Coaxial components IP networks Web and internet services Internet telephony Cellular networks Communication networks
Content Type	Text
Resource Type	Article

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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
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