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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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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 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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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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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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Broadcast capability of direct sequence and hybrid spread spectrum [PDF]
IEEE Journal on Selected Areas in Communications, 1990 Two forms of spread-spectrum signaling, namely direct-sequence and hybrid (direct-sequence/frequency-hopped) are shown to provide high broadcast capability, especially when used in conjunction with forward-error-control coding schemes. The broadcast capability is defined as the maximum number of simultaneous distinct messages that can be transmitted to
Evaggelos Geraniotis, Behzad Ghaffari
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Code Synchronization Algorithm Based on Segment Correlation in Spread Spectrum Communication
Algorithms, 2015 Spread Spectrum (SPSP) Communication is the theoretical basis of Direct Sequence Spread Spectrum (DSSS) transceiver technology. Spreading code, modulation, demodulation, carrier synchronization and code synchronization in SPSP communications are the core
Aohan Li +4 more
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IET Signal Processing, 2022 The Shannon‐Nyquist sampling theorem that is based on narrowband interference (NBI) detection and parameter estimation methods in direct sequence spread spectrum (DSSS) communication is limited by the high sampling rate.
Zengkai Shi +4 more
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Tongxin xuebao, 2022 To solve the performance limitation of direct sequence spread spectrum system in complex multipath environment, an adaptive anti-jamming spread spectrum framework that organically combines single carrier frequency domain equalization (SCFDE) and direct ...
Fanglin GU +4 more
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A Chaos-Based Secure Direct-Sequence/Spread-Spectrum Communication System
Abstract and Applied Analysis, 2013 This paper proposes a chaos-based secure direct-sequence/spread-spectrum (DS/SS) communication system which is based on a novel combination of the conventional DS/SS and chaos techniques.
Nguyen Xuan Quyen +2 more
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