NDLI: The capacities of ALOHA and power-controlled CDMA in the UMTS downlink channel

Content Provider	IEEE Xplore Digital Library
Author	Borgonovo, F. Capone, A. Cesana, M. Fratta, L.
Copyright Year	2002
Description	Author affiliation: Dipt. di Elettronica e Informazione, Politecnico di Milano, Italy (Borgonovo, F.; Capone, A.; Cesana, M.; Fratta, L.)
Abstract	We compare the performance of data transmission on the downlink channel of a cellular system when two different interference-reducing techniques are used. The first is the conventional CDMA with closed loop power control with FEC coding and the second is S-ALOHA. In the latter, packets are transmitted in random slots at the full channel rate, therefore using bandwidth to achieve a random time spreading of packets. Both techniques use retransmissions when error occurs. The performance evaluation is obtained by simulation in order to consider a realistic cellular environment that takes into account the bursty nature of the inter-cell interference noise and its real statistics, which, in the S-ALOHA case where no spreading is used, is far from being normally distributed. The results presented show that the S-ALOHA approach, in the UMTS environment, achieves better bandwidth efficiency than CDMA.
Starting Page	387
Ending Page	391
File Size	509009
Page Count	5
File Format	PDF
ISBN	0780374428
ISSN	13476890
DOI	10.1109/WPMC.2002.1088199
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-10-27
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Working environment noise Power control 3G mobile communication Statistical distributions Interference Bandwidth Forward error correction Downlink Multiaccess communication Data communication
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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