Results 251 to 260 of about 416,241 (289)

Direct sequence spread spectrum radio LANs

IEE Colloquium on Radio LANs and MANs, 1995
The performance of direct sequence spread spectrum (DSSS) ISM (2.4-2.5 GHz) band radio local area networks (RLANs) using BPSK modulation and matched filter receivers is investigated. Short and long pseudonoise (PN) spreading sequences, a Barker code and an M-sequence, have been employed in both differential and coherent systems operating in a Rayleigh ...
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Algebraically Related Sequences in Direct Spread Spectrum Systems

Промышленные АСУ и контроллеры, 2021
Предложено применение алгебраически-связанных последовательностей в системе связи с прямым расширением спектра. Структурно-временные свойства последовательностей позволяют создать некогерентную систему связи с прямым расширением спектра с характеристиками помехоустойчивости, инвариантными к произвольным частотно-фазовым возмущениям в канале связи ...
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Experimental direct-sequence spread-spectrum digital mobile radio transmission

2006
This paper is concerned with the conception and the realization of a direct-sequence spread-spectrum digital mobile radio transmission at 910 MHz. The system has been used either as a spread-spectrum communication modem or as a wideband channel sounder.
El Zein, Ghaïs, Salehudin, Mohamed, Daniel, Annie, Bai, Jin Jiang, Citerne, Jacques   +4 more
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Direct Sequence Spread Spectrum (DSSS) Baseband Transmitter

2016
As today’s mixed signal chips often require both digital and analog system components on the same substrate, an interesting area of application for silicon nanowire technology is to build a Direct Sequence Spread Spectrum (DSSS) baseband transmitter.
Ahmet Bindal, Sotoudeh Hamedi-Hagh
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Concurrent bus based on direct sequence spread spectrum

2008 International Conference on Information and Automation, 2008
Many industrial control site use field bus such as RS485, RS232 or CAN or some other bus. However, data terminals can not transmit information simultaneously or initiatively through these bus. The paper presented a new technology of industrial field concurrent bus communication. It based on direct sequence spread spectrum, used frequency division multi
null Ding Hong, null Xie Yanhui, null Sun Fuwen, null Ma Qiuming, null Wang Yanhong   +4 more
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Performance of direct-sequence spread-spectrum RAKE receivers with random spreading sequences

IEEE Transactions on Communications, 1997
In this paper, we derive error probability expressions for binary phase-shift keying (BPSK) and quaternary phase-shift keying (QPSK) spread direct-sequence spread-spectrum (DSSS) systems employing random spreading sequences with RAKE receivers. The derived expressions accurately take into account the effect of interpath interference which usually has ...
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Acquisition of Direct-Sequence Spread-Spectrum Signals

1997
In order to successfully demodulate a digitally modulated signal, the receiver must first synchronize its oscillators and clocks to the received signal. If direct-sequence spread-spectrum modulation is used, then it is also necessary to synchronize to the code sequence that was used to produce the spectral spreading.
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Novel direct sequence spread spectrum multiple access technique

MILCOM 2000 Proceedings. 21st Century Military Communications. Architectures and Technologies for Information Superiority (Cat. No.00CH37155), 2002
Code reuse multiple access (CRMA) is a new communication technique (patent pending) that employs direct sequence spread spectrum signaling for the access channel. It is similar to the spread ALOHA CDMA (SA/CDMA) and spread ALOHA multiple access (SAMA) multiple access techniques.
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Novel low cost direct sequence spread spectrum synchroniser

Proceedings of 1996 Canadian Conference on Electrical and Computer Engineering, 2002
Spread spectrum systems have become more and more popular, with many commercial systems appearing on the market. One of the more complicated areas of spread spectrum systems is code acquisition and tracking. Many acquisition and tracking methods have been presented in the literature. These various methods differ in complexity, performance and cost.
J. van de Groenendaal, R.M. Braun
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Direct Sequence Spread Spectrum-Based Radio Steganography

2023 Signal Processing Symposium (SPSympo), 2023
Mateusz Wróbel, Zbigniew Piotrowski, Jan M. Kelner   +2 more
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