NDLI: A spread CDMA slotted ALOHA system with hybrid ARQ for satellite multiple access

Content Provider	IEEE Xplore Digital Library
Author	Gonzalez, O. Kohno, R.
Copyright Year	1998
Description	Author affiliation: Div. of Electr. & Comput. Eng., Yokohama Nat. Univ., Japan (Gonzalez, O.)
Abstract	In the present paper we propose and investigate a new type of satellite multiple access protocol that combines the characteristics of the spread slotted ALOHA (SSA) protocol with the hybrid-ARQ error controlling and retransmission system in order to increase the throughput, in terms of the number of retransmissions, and to keep the BER of the satellite link low when the channel experiences heavy traffic. The main feature of our proposed systems is the utilization of two different fields in the analysis of the satellite multiple access problem when the traffic is heavy in order to deliver a greater amount of information bits per time slot. A CDMA m-sequence coding for the SSA has been applied together with a type I hybrid ARQ system. The ARQ system utilized was a selective repeat ARQ system together with BCH code intended to perform error detection and correction. The system performance was evaluated according to different amount of parity check bits of the BCH code on an environment with noise (AWGN) and co-channel interference from other users trying to access the hub. Since the hub now possesses the FEC capability to correct errors that appear after the CDMA despreading of the packets, the satellite doesn't need to ask so often for the retransmission of erroneous packets and will ask for retransmission only when the FEC capability is exceeded. Computer simulations show the performance of the proposed multiple access scheme.
Starting Page	729
Ending Page	733
File Size	552599
Page Count	5
File Format	PDF
ISBN	078034281X
DOI	10.1109/ISSSTA.1998.722473
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-09-04
Publisher Place	South Africa
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Multiaccess communication Automatic repeat request Satellites Access protocols Error correction Forward error correction Control systems Throughput Bit error rate Information analysis
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