Results 281 to 290 of about 244,698 (338)

Optical Code Division Multiple Access

2014
A comprehensive guide to optical fiber communications, from the basic principles to the latest developments in OCDMA for Next-Generation Fiber-to-the-Home (FTTH) systems. Part I starts off with the fundamentals of light propagation in optical fibers, including multiple access protocols, and their enabling techniques.
openaire   +1 more source

Frequency Hopping Code Division Multiple Access for Wireless Local Access

International Journal of Wireless Information Networks, 1999
In this paper, the suitability of Slow FrequencyHopping Code Division Multiple Access (SFHCDMA) isevaluated for wireless local access applications.Investigations of the wireless channel indicate that frequency hopping mitigates the poorpropagation characteristics associated with low mobilitycommon to fixed wireless applications.
Mike P. Fitton, Andrew R. Nix, Mark A. Beach   +2 more
openaire   +1 more source

Space-time coding over a code division multiple access system

WCNC. 1999 IEEE Wireless Communications and Networking Conference (Cat. No.99TH8466), 2003
We discuss the usage of space-time coding with multi-antenna transmission for a DS/CDMA system. We have considered an L-multipath, M-mobile antenna system in which the base station has a phased N-antenna array (i.e. fading at the base station antennas is completely correlated).
Ardavan Maleki-Tehrani, Rohit Negi, John M. Cioffi   +2 more
openaire   +1 more source

Optical Code Division Multiple Access

1998
The code division multiple access (CDMA) is under consideration for broadband video delivery over fiber-optic local area networks (LANs). There are several approaches for implementing classical CDMA principles in the optical domain, classified as incoherent, coherent and approaches based on encoding in frequency spectrum.
Srdić, Ida, Perić, Ivan, Zovko-Cihlar, Branka   +2 more
openaire   +2 more sources

Code division multiple access based on independent codes and turbo decoding

Annales Des Télécommunications, 1999
L’article etudie un algorithme de codage/decodage pour l’acces multiple par etalement de spectre base sur un decodage iteratif (turbo). L’algorithme est applicable aux systemes synchrones et asynchrones. Les sequences pseudo-aleatoires quasi-orthogonales du systeme d’acces multiple par etalement de spectre a sequences directes sont remplacees par ...
Loïc Brunel, Joseph Boutros
openaire   +1 more source

Truncated power control in code division multiple access communications

GLOBECOM 97. IEEE Global Telecommunications Conference. Conference Record, 2000
We analyze the performance of truncated power control in a code division multiple access communication system. This power control scheme compensates for fading above a certain cutoff fade depth: below the cutoff level an outage is declared. We assume a channel with fast Rayleigh fading and slow, log-normal shadowing, where truncated power control is ...
s. w. kim, a.goldmith
openaire   +1 more source

Code division multiple access networks

1985
This chapter discusses code division multiple access networks. The spread spectrum code division multiple access techniques requires the construction of spreading codes giving rise to a minimum of interlink interference. However, situations arise where the effects of interlink interference are amplified owing to operational considerations.
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Code Division Multiple Access (CDMA)

2018
This chapter presents a brief overview of spread spectrum technique and shows how it relates to CDMA technology. Orthogonal codes and their properties are presented and show how orthogonal codes are generated and used to design CDMA radio. It is shown that CDMA capacity directly relates to code length.
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Linear multiuser detectors for synchronous code-division multiple-access channels

IEEE Transactions on Information Theory, 1989
R. Lupas, S. Verdú
semanticscholar   +1 more source

Code division multiple-access techniques in optical fiber networks. II. Systems performance analysis

IEEE Transactions on Communications, 1989
J. Salehi, C. Brackett
semanticscholar   +1 more source