NDLI: Experimental tests of coverage and handoff for a low-power TDMA wireless access system

Content Provider	IEEE Xplore Digital Library
Author	Feuersteihn, M. Sollenberger, N.
Copyright Year	1994
Description	Author affiliation: US West, Bellevue, WA, USA (Feuersteihn, M.)
Abstract	Experimental results for a low-power TDMA wireless access system are presented. Experimental equipment consisting of two radio ports mounted on traffic lights and two radio port controllers located in a central office were interconnected using HDSL transceivers and copper loop facilities. Portables communicated with the radio ports using a low-delay 2 millisecond TDMA frame structure with 10 time-slots and QPSK burst modulation at 500 kbps as specified in Bellcore's Technical Advisory on wireless access. The operating frequencies were between 2.1 and 2.2 GHz. A portable controlled automatic link transfer algorithm was tested between the two radio ports. The results show that the use of diversity antennas in the portable permits the use of signal strength hysteresis values as low as 5 dB without excessive "ping-ponging". Radio port coverage, characterized in terms of word error rate and subjective voice quality, was substantially "canyon-oriented", which is consistent with propagation measurements at 2 GHz with radio port antennas located below the roofs. Significant in-building coverage into street-side businesses was demonstrated.
Starting Page	501
Ending Page	505
File Size	396271
Page Count	5
File Format	PDF
ISBN	0780318234
DOI	10.1109/ICUPC.1994.383109
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-09-27
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Testing Time division multiple access Radio control Antennas and propagation Communication system traffic control Centralized control Lighting control Central office Transceivers Copper
Content Type	Text
Resource Type	Article

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

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