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Code-Time Diversity for Direct Sequence Spread Spectrum Systems [PDF]

The Scientific World Journal, 2014
Time diversity is achieved in direct sequence spread spectrum by receiving different faded delayed copies of the transmitted symbols from different uncorrelated channel paths when the transmission signal bandwidth is greater than the coherence bandwidth ...
A. Y. Hassan
doaj   +5 more sources

Novel direct sequence spread spectrum communication method

Tongxin xuebao, 2023
In response to the problem of limited performance and low spectral efficiency in complex multipath environments of traditional direct sequence spread spectrum communication, a cyclic prefix (CP) block transmission structure spread spectrum system with a ...
Fanglin GU, Jinlin PENG, Yuzhen HUANG, Shengqun CAO, Haitao ZHAO, Jibo WEI   +5 more
doaj   +3 more sources

Direct sequence spread spectrum: history, principles and modern applications

Vojnotehnički Glasnik
Introduction/purpose: Direct sequence spread spectrum modulation is widely used in many radiocommunications systems. At the first time, this modulation technique was used in military communications and navigation systems.
Nenad M. Stojanović, Branislav M. Todorović, Vladimir B. Ristić, Ivana V. Stojanović   +3 more
doaj   +2 more sources

Implementasi Direct Sequence Spread Spectrum pada DSK TMS320C6416T

Jurnal Teknik ITS, 2014
Spread spectrum merupakan teknik pengiriman sinyal yang tahan terhadap gangguan dan mempunyai tingkat keamanan informasi yang cukup tinggi pada saat pengiriman. Salah satu teknik spread spectrum yang dikembangkan adalah direct sequence.
Nanang Arif Haryadi, Suwadi Suwadi, Titiek Suryani   +2 more
doaj   +2 more sources

Estimation of Spread Spectrum Signal Parameters Utilizing Wavelet Transform Analysis [PDF]

Radioengineering, 2005
This paper investigates the application of wavelet transform (WT) tothe extraction of particular features of direct sequence spreadspectrum signals. The WT is exploited to the point that not only itscapabilities but also its limitations are exposed to ...
N. Uzunoglu, A. Amditis, G. Katsoulis, N . Leonis   +3 more
doaj   +2 more sources

Implementasi dan Evaluasi Kinerja Direct Sequence Spread Spectrum menggunakan Wireless Open-Access Research Platform (WARP) [PDF]

Jurnal Teknik ITS, 2015
Dalam sistem komunikasi nirkabel, khususnya pada dunia komunikasi taktis atau militer, salah satu yang harus dihadapi adalah gangguan jamming.Salah satu sistem yang dapat mengatasi masalah tersebut adalah Direct Sequence Spread Spectrum (DSSS) dimana ...
Aditya Sukmana Putra, Suwadi Suwadi, Titiek Suryani   +2 more
doaj   +1 more source

Direct-sequence spread spectrum system [PDF]

Proceedings of the IEEE 1991 National Aerospace and Electronics Conference NAECON 1991, 2002
The authors discuss the construction and evaluation of the performance of a direct-sequence spread spectrum (DSSS) system. The system uses a special type of injection-locked oscillator called a synchronous oscillator for code synchronization. The DSSS system was constructed in a manner that provides a test-bed for demonstrating SS principles and allows
J.P. Stephens, D.M. Norman
openaire   +1 more source

direct-sequence spread spectrum [PDF]

, 2011
Abstract : The concepts of spread spectrum with a focus on the widely used direct sequence spread spectrum modulation technique are presented. After examining the fundamental concepts of spread spectrum, direct sequence is discussed in detail, along with various pseudo-noise methodologies, concluding with several examples of commercial applications.
  +4 more sources

Modulation parameter estimation of LFM interference for direct sequence spread spectrum communication system in alpha-stable noise [PDF]

, 2021
The linear frequency modulation (LFM) interference is one of the typical broadband interferences in direct sequence spread spectrum (DSSS) communication system.
Chen, Yunfei, Gong, Fengkui, Han, Yuting, Liu, Mingquian, Song, Hao, Yang, Zhutian   +5 more
core   +1 more source

Blind Estimation of Direct Sequence Spread Spectrum Signal Based on MCMC-UKF [PDF]

Jisuanji gongcheng, 2019
Aiming at the problem of spreading code and information sequence blind estimation for long code Direct Sequence Spread Spectrum(DSSS) signal,this paper proposes a joint estimation algorithm based on overlapping segment Markov Chain Monte Carlo-Unscented ...
MA Chao, ZHANG Limin
doaj   +1 more source