Results 141 to 150 of about 7,287 (173)
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Blind Estimation of a Scrambler in Long-Code Direct Sequence Spread Spectrum Systems
International Conference on Service Operations and Logistics, and Informatics, 2023Recently, a method for blind estimation of a scrambler in a short-code DSSS system has been studied, applying the removal of the message and spreading code from the scrambled signal.
Dongyeong Kim +2 more
semanticscholar +1 more source
Detection of Direct Sequence Spread Spectrum Signals Based on Deep Learning
IEEE Transactions on Cognitive Communications and Networking, 2022Direct spread spectrum communication has the advantages of strong anti-jamming ability and low probability of interception, which plays an essential role in both civil and military communications.
Fei Wei +6 more
semanticscholar +1 more source
MILCOM 91 - Conference record, 2002
Prediction error filter (PEF) design for narrowband interference (NBI) excision is examined for a hopped direct-sequence spread-spectrum system. The PEF is obtained by application of the Levinson Durbin algorithm (LDA). Several enhancements are utilized: unbiased autocorrelation estimation and normalization.
M. Webster, W. Furman
openaire +1 more source
Prediction error filter (PEF) design for narrowband interference (NBI) excision is examined for a hopped direct-sequence spread-spectrum system. The PEF is obtained by application of the Levinson Durbin algorithm (LDA). Several enhancements are utilized: unbiased autocorrelation estimation and normalization.
M. Webster, W. Furman
openaire +1 more source
The analysis on the direct sequence spread spectrum communication system
Other Conferences, 2022The spread spectrum communication technology has been already widely used especially in the military filed because of its advantages such as high communication security, anti-interference capability, high utilization of spectrum and low interference to ...
Yihong Gao
semanticscholar +1 more source
Direct Sequence Spread Spectrum Technique for Multi-User Communication System Application
2021 IEEE 1st International Maghreb Meeting of the Conference on Sciences and Techniques of Automatic Control and Computer Engineering MI-STA, 2021Wireless communication via direct sequence spread spectrum (DSSS) was first experimented in the late 1800’s as a low probability detection (LPD) communication technique for military application; it was used by the military to embed transmitted secret ...
Kheriya. F. Alhaddar +3 more
semanticscholar +1 more source
Journal of the Acoustical Society of America
In the underwater acoustic channel, the conventional M-ary phase-shift keying (MPSK) direct-sequence spread-spectrum (DSSS) systems are sensitive to time-varying Doppler shifts. To address this issue, this paper proposes an iterative multi-channel double-
Jie Wu +5 more
semanticscholar +1 more source
In the underwater acoustic channel, the conventional M-ary phase-shift keying (MPSK) direct-sequence spread-spectrum (DSSS) systems are sensitive to time-varying Doppler shifts. To address this issue, this paper proposes an iterative multi-channel double-
Jie Wu +5 more
semanticscholar +1 more source
Capacity Analysis of Spectrally Overlapping Direct-Sequence Spread Spectrum (DSSS) Channels
2011It is well known that cellular business has been increasing exponentially in the last decade. With the huge increase in the number of cellular users, capacity of the existing cellular system has become an issue. In this paper, a novel approach is presented that provides for a significant increase in the number of users in multi-user DSSS systems.
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Efficient MMSE Equalization for Direct-Sequence Spread-Spectrum Underwater Communications
IEEE Internet of Things JournalTo facilitate the exploration and exploitation of underwater resources, autonomous systems and underwater acoustic networks (UANs) are deployed for tasks unsuitable for direct human intervention and exchange information between devices.
Mengzhuo Liu +3 more
semanticscholar +1 more source
Journal of the Acoustical Society of America
Underwater acoustic communication channels have various characteristics including attenuation, distortion, multipath, and Doppler frequency shifts that degrade communication reliability.
Ye-gwon Hong +3 more
semanticscholar +1 more source
Underwater acoustic communication channels have various characteristics including attenuation, distortion, multipath, and Doppler frequency shifts that degrade communication reliability.
Ye-gwon Hong +3 more
semanticscholar +1 more source
CBTC Security and Reliability Enhancements by a Key-Based Direct Sequence Spread Spectrum Technique
IEEE transactions on intelligent transportation systems (Print)A novel key-based Direct Sequence Spread Spectrum (DSSS) technique is proposed as a safety function for Communications-Based Train Control (CBTC) systems.
Hamed Dabbaghzadeh +2 more
semanticscholar +1 more source