NDLI: The Effect of a Rapidly Changing Urban Environment on Nomadic WiMAX Performance

Content Provider	IEEE Xplore Digital Library
Author	Filis, K.G. Theodoropoulou, E.D. Lyberopoulos, G.L.
Copyright Year	2007
Description	Author affiliation: COSMOTE Mobile Telecommun., Athens (Filis, K.G.; Theodoropoulou, E.D.; Lyberopoulos, G.L.)
Abstract	This paper presents the results obtained during a three-month trial (February -April 2006) performed by COSMOTE towards the assessment of "fixed WiMAX" technology (IEEE 802.16-2004). The trial was conducted in the three largest cities of Greece, namely, Athens, Thessaloniki and Patra, in parallel, using "fixed WiMAX" equipment offered by three different vendors. The results presented here have been obtained at street-level during stationary measurements performed in the Athens centre, an urban NLOS environment, using a portable WiMAX CPE and a Laptop. The main characteristic of this environment is that it changes very rapidly and quite unpredictably, due to the existence of moving vehicles ranging from motorbikes, to buses and large trucks. These measurements simulate the system performance that an end-user perceives in such an environment, when he/she uses "fixed WiMAX", while enjoying a meal or drink in a restaurant, bar or cafeteria. Preliminary results indicate that in an urban street-level environment, with NLOS channel conditions, large throughput variations are observed, due to the existence of moving vehicles in the radio path. These variations may severely affect the quality of delay-sensitive real-time applications such as, video streaming and video-telephony.
Starting Page	1
Ending Page	5
File Size	1230089
Page Count	5
File Format	PDF
ISBN	1424416620
DOI	10.1109/ISTMWC.2007.4299049
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-07-01
Publisher Place	Hungary
Access Restriction	Subscribed
Rights Holder	Scientific Assoc for Infocommunications
Subject Keyword	Performance evaluation Portable computers System performance Motorcycles WiMAX Cities and towns Streaming media Throughput Delay Vehicles
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
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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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