Results 171 to 180 of about 6,142 (224)

Ultrafast all-optical code-division multiple-access (CDMA) fiber-optic networks

Computer Networks and ISDN Systems, 1994
Abstract With the advanced development of fiber-optics, the large bandwidth-expansion required by spread spectrum code-division multiple-access (CDMA) can now be accomodated by using a fiber-optic channel for transmission and incoherent optical signal processing for code generation and correlation.
Wing C. Kwong, Paul R. Prucnal
openaire   +3 more sources

Code Division Multiple Access (CDMA) applicable for Mobile Satellite Communications

2011 International Siberian Conference on Control and Communications (SIBCON), 2011
This paper describes in particular Code Division Multiple Access (CDMA) applicable in Mobile Satellite Communications (MSC) connecting Mobile Earth Stations (MES) via Land Earth Stations (LES). However, in satellite communication systems, as a rule, especially in MSC many users are active at the same time.
Stojce Dimov Ilcev
openaire   +3 more sources

Code Division Multiple Access (CDMA)

2007
Fitzek, Frank, Katz, Marcos
exaly   +5 more sources

Independent Code Division Multiple Access in DS-CDMA

Wireless Personal Communications, 2021
An independent component analysis (ICA) based CDMA receiver is proposed, which in addition to the independence of users also exploits the independence of pseudo-codes in user signal separation. The proposed scheme is termed as independent code division multiple access in contrast to orthogonal code division multiple access being used in conventional ...
Irfan Anjum, Aqeel A. Syed, Azhar A. Rizvi   +2 more
openaire   +1 more source

Study of asynchronous telecommunication system, based on code division multiple access (CDMA)

2024 XXXIII International Scientific Conference Electronics (ET)
Ivo Dochev, Lilyana Docheva, Stoycho Manev   +2 more
openaire   +3 more sources

Chaotic Digital Code-Division Multiple Access (CDMA) Communication Systems

International Journal of Bifurcation and Chaos, 1997
In this paper, the structure, principle and framework of chaotic digital code-division multiple access ((CD)2 MA) communication systems are presented. Unlike the existing CDMA systems, (CD)2MA systems use continuous pseudo-random time series to spread the spectrum of message signal and the spread signal is then directly sent through a channel to the ...
Yang, Tao, Chua, Leon O.
openaire   +2 more sources

On multi-carrier code division multiple access (MC-CDMA) modem design

Proceedings of IEEE Vehicular Technology Conference (VTC), 2002
Standard spread-spectrum techniques encounter a severe performance loss under channels with large Doppler spread. It is shown that the novel spread-spectrum technique, called multi-carrier (MC) CDMA, is dual to direct-sequence CDMA. This enables to derive that MC-CDMA is a signalling technique which allows optimum detection under severe Doppler spread.
Gerhard P. Fettweis, Ahmad Shaikh Bahai, Kiomars Anvari   +2 more
openaire   +1 more source

Performance Analysis of a Slotted Code Division Multiple Access(CDMA) Network

MILCOM 1984 - IEEE Military Communications Conference, 1984
A performance model of a multihop Code Division Multiple Access(CDMA) Spread Spectrum Network is presented. Time is divided into slots and the network nodes are synchronized such that fixed length messages will only be sent at the beginning of slots. The message generation processes at the nodes are assumed to be independent Bernoulli processes. A node
Szu-Lin Su, Victor O.K. Li
openaire   +1 more source

Generalized Temporal Code Division Multiple Access (CDMA) For Optical Communications

SPIE Proceedings, 1990
The CSI has developed analytical techniques for constructing pseudo orthogonal words suitable for temporal CDMA. The performance of these sets of words have been studied with respect to bit-error rate and with respect to other coding methods. The CSI methodology and algorithms permit generalized solutions for any combination of users (words), weights ...
A. J. Mendez, S. Kuroda, R. Gagliardi, E. Garmire   +3 more
openaire   +1 more source

CDMA-IC: a novel code division multiple access scheme based on interference cancellation

[1992 Proceedings] The Third IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, 2003
Third generation cellular systems will need to increase capacity significantly from previous generations. A system based on code division multiple access may be of interest provided limitations often present in current proposals are overcome. Here, an alternative is discussed which offers many promising features. The predicted capacity is very high and
Paul Dent, Björn Gudmundson, Magnus Ewerbring   +2 more
openaire   +1 more source