NDLI: Efficient Utilization of Orthogonal Variable Spreading Factor Trees Using Two levels Of Hierarchies and Adaptive Rate Control Mechanism

Content Provider	IEEE Xplore Digital Library
Author	Khedr, M.E. AbdelRasoul, R.A. Youssef, M.M.
Copyright Year	2007
Description	Author affiliation: Electron. & Commun. Eng. Arab Acad. for Sci. & Technol., Alexandria (Khedr, M.E.; AbdelRasoul, R.A.; Youssef, M.M.)
Abstract	A novel code assignment and re-assignment mechanism is proposed to accommodate users with different data rate requirements in WCDMA systems employing OVSF codes. The new mechanism overcomes the drawbacks of several static and dynamic algorithms for code assignment. Specifically, it reduces significantly code blocking probability due to the fragmentation of the OVSF code tree and allows dynamic rate control mechanism. Our proposed mechanism minimizes the code blocking and code reassignment process to new calls using code residual crowded partitioning algorithm. This has the advantage of providing heterogeneous data rates to mobile users and fully utilizes the system capacity. Moreover, the unreserved bandwidth of the network can be shared fairly among competing mobile users. Extensive simulations were made to validate the proposed mechanism and results have proven the superiority of our algorithm with respect to existing algorithms.
Starting Page	277
Ending Page	281
File Size	3212845
Page Count	5
File Format	PDF
ISBN	9781424418404
DOI	10.1109/IIT.2007.4430438
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-11-18
Publisher Place	Dubai
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Programmable control Satellites Communication system control Quality of service Telecommunication traffic Electric variables control Partitioning algorithms Multiaccess communication Adaptive control Next generation networking
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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