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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
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Blind Estimation of Spreading Sequence and Data Bits in Direct-Sequence Spread Spectrum Communication Systems [PDF]
IEEE Access, 2020 At the transmitter of a Direct Sequence Spread Spectrum (DSSS) communication system, data bits are spread using a spreading sequence. To demodulate the transmitted data bits, the received signal should be de-spread using the same spreading sequence ...
Hoesang Choi, Hichan Moon
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On cracking direct‐sequence spread‐spectrum systems [PDF]
Wireless Communications and Mobile Computing, 2009 AbstractSecure transmission of information over hostile wireless environments is desired by both military and civilian parties. Direct‐sequence spread‐spectrum (DS‐SS) is such a covert technique resistant to interference, interception, and multipath fading.
Youngho Jo, Dapeng Wu 0001
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Direct Sequence Spread Spectrum [PDF]
, 2000 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.
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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
Stephens, J. P., Norman, D. M.
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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 +5 more
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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
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On acquisition of wideband direct-sequence spread spectrum signals [PDF]
IEEE Transactions on Wireless Communications, 2006 Very high rate packet data systems such as those based on wideband spread-spectrum (SS) signaling face an important challenge - achieving fast and reliable acquisition to minimize preamble overhead and optimize packet throughput. Such wideband modulation schemes undergo frequency selective fading, implying a very large number of resolved multipath ...
Iyappan Ramachandran, Sumit Roy 0001
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On Effectiveness of Hopping-Based Spread Spectrum Techniques for Network Forensic Traceback [PDF]
International Journal of Networked and Distributed Computing (IJNDC), 2013 Network-based crime has been increasing in both extent and severity and network-based forensics encapsulates an essential part of legal surveillance. A key network forensics tool is traceback that can be used to identify true sources of suspects.
Wei Yu +6 more
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A direct-sequence spread-spectrum super-regenerative receiver [PDF]
2000 IEEE International Symposium on Circuits and Systems (ISCAS), 2000 Peer ...
Moncunill Geniz, Francesc Xavier +2 more
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