Results 71 to 80 of about 797 (174)

Research on Spread Spectrum Codes Optimized by Sparrow Search Algorithm and Extreme Gradient Boosting

Guangtongxin yanjiu
【Objective】Direct Sequence Spread Spectrum (DSSS) has been widely used in military and civilian communications due to its strong resistance to various common interferences, high security, and ease of implementation.
LIANG Zhiru, BIAN Dongming, ZHANG Gengxin   +2 more
doaj  

Design and implementation of a direct sequence spread spectrum testbed

, 2015
Includes bibliographical references (leaf 75)This report describes the design and implementation of a direct sequence spread spectrum (DSSS) testbed. The testbed was created using both MATLAB and Simulink software.
Lin, Cheng-Ju
core  

Narrowband interference rejection in direct-sequence spread spectrum systems using linear prediction and maximum-likelihood sequence estimator

, 1999
In this paper, we address the problem of narrowband interference suppression in direct-sequence spread spectrum (DSSS) systems. Specifically, we present a new method for improving the performance of DSSS systems employing narrowband interference ...
Alshebeili, S.A.,, Al-Sanie, A.M.
core   +1 more source

CONVOLUTIONAL CODED GENERALIZED DIRECT SEQUENCE SPREAD SPECTRUM

, 2008
In this thesis we investigate the worst-case performance of coded ordinary and coded generalized direct sequence spread spectrum (DSSS) systems in a communication channel corrupted by an unknown and arbitrary interfering signal of bounded power.
Venn, Madan, Venn, Madan R.
core  

ANÁLISIS DEL DESEMPEÑO DE UN SISTEMA DE COMUNICACIÓN DE DA-TOS DE CORTO ALCANCE VÍA RADIO EN 2.4 GHZ BASADO EN ESPECTRO ENSANCHADO POR SECUENCIA DIRECTA (DSSS)

Revista de Investigaciones Universidad del Quindío, 2012
En el presente artículo se hace una introducción teórica acerca de la técnica de trasmisión de Espectro En-sanchado por Secuencia Directa (DSSS, Direct Sequence Spread Spectrum) y las ventajas obtenidas al mo-dificar sus parámetros de configuración.
Yamith Enrique Narváez-Matituy, Andrés Fernando Ordóñez-Hurtado, Víctor Manuel Quintero-Florez   +2 more
doaj   +1 more source

Direct-sequence spread-spectrum ultrasonic testing device

, 1995
Techniques for providing an ultrasonic flaw detection system are disclosed. A continuous wave of wide-band direct-sequence spread-spectrum signals continuously drives one or more transmitting transducers, thereby flooding a test object with coded ...
Wormley, Samuel, Papadakis, Emmanuel, Russell, Steve   +2 more
core  

An eigenstructure technique for direct sequence spread spectrum synchronization

, 2009
An important aspect of all spread spectrum receivers is synchronization. The harsh radio environment has necessitated the development of fast and robust techniques.
Mangalvedhe, Nitin R.
core  

Spread spectrum training and development [PDF]

, 2004
Spread Spectrum communication system has been evolving rapidly since it was first commercialized by FCC (Federal Communication Commission). One of the techniques, which is Direct Sequence Spread Spectrum (DSSS), is widely used in CDMA system. In DSSS, a
Lukie., Marietta Rachel
core  

Blind estimation of pseudo‐random codes in periodic long code direct sequence spread spectrum signals

, 2016
An estimation method of pseudo-random (PN) codes in the periodic long code direct sequence spread spectrum signals using a pair of spreading code and scrambling code [i.e.
Zhao, Zhijin, Gu, Xiaowei, Shen, Lei
core   +1 more source

Anti-jamming for cognitive radio networks with Stackelberg game-assisted DSSS approach

EURASIP Journal on Wireless Communications and Networking
The proposed study introduces a novel anti-jamming approach for cognitive radio networks (CRNs) by integrating the Stackelberg game model with direct sequence spread spectrum (DSSS) techniques.
Muhammad Imran, Pan Zhiwen, Liu Nan, Muhammad Sajjad, Faisal Mehmood Butt   +4 more
doaj   +1 more source