NDLI: Known and novel diversity approaches in a JD-CDMA system concept developed within COST 231

Content Provider	IEEE Xplore Digital Library
Author	Klein, A. Steiner, B. Steil, A.
Copyright Year	1995
Description	Author affiliation: Kaiserslautern Univ., Germany (Klein, A.; Steiner, B.; Steil, A.)
Abstract	Presently, standards for third generation mobile radio systems are being developed. The main requirements to be met by third generation mobile radio systems are high cellular spectrum efficiency and high flexibility. In this paper, the focus is on high cellular spectrum efficiency, which is difficult to achieve due to the time variance and frequency selectivity of the mobile radio channel and due to interference. It is known that the degrading effects of these adverse characteristics of the mobile radio channel and of interference can be mitigated by diversity. The way how diversity influences cellular spectrum efficiency is derived in general. Diversity techniques applied in mobile radio systems realize combinations of different types of diversity. As a reference point, the types of diversity used in GSM are analyzed since GSM is the most successful standard of second generation mobile radio systems worldwide. In GSM, the potential for diversity enhancement inherent in code division multiple access (CDMA) is not exploited. Within COST 231, a joint detection code division multiple access (JD-CDMA) system concept aiming at third generation mobile radio systems has been developed which introduces a CDMA feature into systems based on TDMA and FDMA like GSM and also advanced TDMA (ATDMA). The gains achievable by different types of diversity in the JD-CDMA system concept are investigated. It is shown that considerable gains can be achieved by different types of antenna diversity and by exploiting the additional diversity potential of CDMA. Therefore, third generation standards should be flexible in order to allow the use of as many types of diversity as possible to enhance the cellular spectrum efficiency.
Starting Page	512
Ending Page	516
File Size	680846
Page Count	5
File Format	PDF
ISBN	0780330021
DOI	10.1109/PIMRC.1995.480921
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-09-27
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Costs Land mobile radio Multiaccess communication GSM Frequency Telecommunication standards Standards development Radiofrequency interference Degradation Time division multiple access
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