Results 161 to 170 of about 36,089 (189)

Intelsat TDMA and DAMA

16th International Communications Satellite Systems Conference, 1996
This paper describes two programs recently undertaken by INTELSAT to expand and improve its service offerings for (PSN) traffic, i.e., TDMA system modernization and DAMA system establishment. For TDMA, the paper describes the two objectives of the program for expansion and improvement of the present INTELSAT TDMA system, which are to make low cost TDMA
G. Forcina, S. Oei, R. Bedford
openaire   +1 more source

Comsat's tdma traffic terminal

International Journal of Satellite Communications, 1985
AbstractCOMSAT has installed two traffic terminals in the Etam earth‐station and is currently installing a third in the new Roaring Creek earth‐station to access the INTELSAT TDMA network. This paper describes the COMSAT TDMA traffic terminal equipment from the supergroup interface to the antenna.
Melvin C. Benjamin, Winston M. Bogaert
openaire   +1 more source

RD-TDMA: A Randomized Distributed TDMA Scheduling for Correlated Contention in WSNs

2014 28th International Conference on Advanced Information Networking and Applications Workshops, 2014
In wireless sensor networks (WSNs), contention occurs when two or more nodes in a proximity simultaneously try to access the channel. The contention causes collisions, which are very likely to occur when traffic is correlated. The excessive collision not only affects the reliability and the QoS of the application, but also the lifetime of the network ...
Ashutosh Bhatia, R.C. Hansdah
openaire   +1 more source

TDMA-ASAP: Sensor Network TDMA Scheduling with Adaptive Slot-Stealing and Parallelism

2009 29th IEEE International Conference on Distributed Computing Systems, 2009
TDMA has been proposed as a MAC protocol for wireless sensor networks (WSNs) due to its efficiency in high WSN load. However, TDMA is plagued with shortcomings; we present modifications to TDMA that will allow for the same efficiency of TDMA, while allowing the network to conserve energy during times of low load (when there is no activity being ...
Sameh Gobriel, Daniel Mosse, Robert Cleric   +2 more
openaire   +1 more source

Synchronization methods for TDMA

Proceedings of the IEEE, 1977
A survey is given covering synchronization techniques for large-capacity time-division multiple-access (TDMA) systems using geosynchronous satellites. Five important classes are identified and compared. Also, several methods of initial acquisition are described. The fundamentals of multiple access and TDMA in particular are presented.
P.P. Nuspl, K.E. Brown, W. Steenaart, B. Ghicopoulos   +3 more
openaire   +1 more source

The french tdma terminal

International Journal of Satellite Communications, 1985
AbstractThe paper describes the TDMA terminal manufactured by the French consortium regrouping TEL‐SPACE, SAT and CIT‐ALCATEL. Details on terminal organization, equipment modularity and operational aspects are first presented. The constituent parts of the terminal (common TDMA terminal equipment, DSI/DNI module, order wire module) are then described ...
A. Bernard, L. Kerromes, J. Meunier, F. Rancy, C. Bareyt, D. Vautier, A. Beaucent, J. Salomon, C. Sergent   +8 more
openaire   +1 more source

Japanese commercial tdma system

International Journal of Satellite Communications, 1983
AbstractThis paper reviews two TDMA systems which have been developed at NTT (Nippon Telegraph and Telephone Public Corporation) for domestic use in Japan.The first system uses K‐Bands (30/20 GHz) and is called the TDMA‐65M system. This system constructs a variable channel capacity network between 8 major cities (regional centres).The second system ...
R. Suzuki, H. Hayashizaki, T. Mitani, R. Saga   +3 more
openaire   +1 more source

Intelsat tdma system monitor

International Journal of Satellite Communications, 1985
AbstractThe INTELSAT 120 Mb/s TDMA/DSI system consists of reference stations and traffic terminals which access the INTELSAT V satellites as a multiple beam network. Two reference stations located within each satellite beam serve the network by controlling the acquisition and synchronization of the traffic terminals and by performing TDMA system ...
Jerry Barnett, John F. Phiel
openaire   +1 more source

Adaptive resource sharing for satellite TDMA

5th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Wireless Networks - Catching the Mobile Future., 2002
In this paper, a method to improve the link quality of a satellite TDMA network using adaptive resource sharing is presented. The TDMA network considered is an experimental 20/30 GHz satellite network operated via the German satellite DFS KOPERNIKUS. Adaptive resource sharing provides a means to distribute a common resource within a network. The common
Wilde, A., Schnell, M.
openaire   +3 more sources

ABF-TDMA: an adaptive beamforming TDMA protocol for mobile ad hoc networks

20th International Conference on Advanced Information Networking and Applications - Volume 1 (AINA'06), 2006
A novel MAC protocol called adaptive beamforming time division multiple access (ABF-TDMA) for mobile ad hoc networks with smart antennas is proposed and analyzed ABF-TDMA is based on TDMA and smart antenna and takes the advantage of collision-free reservation. After successful reservation and training, data packet can be transmitted from source node to
null Zhang Guanghui, null Li Jiandong, null Li Changle, null Zhou Lei   +3 more
openaire   +1 more source