Implementation of Underwater Electric Field Communication Based on Direct Sequence Spread Spectrum (DSSS) and Binary Phase Shift Keying (BPSK) Modulation [PDF]
BiomimeticsStable communication technologies in complex waters are a prerequisite for underwater operations. Underwater acoustic communication is susceptible to multipath interference, while underwater optical communication is susceptible to environmental impact ...
Yuzhong Zhang +4 more
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DSSS Signal Detection Based on CNN [PDF]
Sensors, 2023 With the wide application of direct sequence spread spectrum (DSSS) signals, the comprehensive performance of DSSS communication systems has been continuously improved, making the electronic reconnaissance link in communication countermeasures more ...
Han-Qing Gu +4 more
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Period Estimation of Spread Spectrum Codes Based on ResNet [PDF]
Sensors, 2023 In order to more effectively monitor and interfere with enemy signals, it is particularly important to accurately and efficiently identify the intercepted signals and estimate their parameters in the increasingly complex electromagnetic environment ...
Han-Qing Gu +4 more
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A Time–Frequency Energy Squeeze Method Based on Estimating the Chip Rate of DSSS Signals [PDF]
SensorsChip rate estimation for direct-sequence spread spectrum (DSSS) signals plays a crucial role in signal detection and interference identification in non-cooperative wireless communication systems. However, accurate chip rate estimation is difficult in low
Hang Zhao +3 more
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Adaptive Detection of Direct-Sequence Spread-Spectrum Signals Based on Knowledge-Enhanced Compressive Measurements and Artificial Neural Networks [PDF]
Sensors, 2021 The direct-sequence spread-spectrum (DSSS) technique has been widely used in wireless secure communications. In this technique, the baseband signal is spread over a wider bandwidth using pseudo-random sequences to avoid interference or interception.
Shuang Zhang +3 more
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Study of the Performance of DSSS UAC System Depending on the System Bandwidth and the Spreading Sequence [PDF]
Sensors, 2021 A signal transmitted in an Underwater Acoustic Communication (UAC) system operating in a shallow-water channel suffers from strong time dispersion due to multipath propagation.
Iwona Kochanska +3 more
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Design and Evaluation of an Acoustic Modem for a Small Autonomous Unmanned Vehicle [PDF]
Sensors, 2019 Design of underwater acoustic (UWA) modems for compact-sized, underwater platforms such as autonomous underwater vehicles (AUVs) is challenging because of the practical requirement to keep an engineering balance between the performance and the system ...
Siyuan Zheng +5 more
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Blind Estimation of the PN Sequence of A DSSS Signal Using A Modified Online Unsupervised Learning Machine [PDF]
Sensors, 2019 Direct sequence spread spectrum (DSSS) signals are now widely used in air and underwater acoustic communications. A receiver which does not know the pseudo-random (PN) sequence cannot demodulate the DSSS signal.
Yangjie Wei +3 more
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IEEE Access, 2020 Intra-body communication (IBC) uses the human body as the transmission medium for electrical signals, and it features the following advantages: low power consumption, strong anti-interference ability, high data security, and broad application scenarios ...
W. K. Chen +7 more
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Journal of Engineering and Sustainable Development, 2013 This paper focuses on the performance comparison of two direct sequence spread spectrum (DSSS)systems one system using Gold code and the other system using Walsh code under the effect of single tone jamming(STJ) and multi-tone jamming(MTJ) in presence
Sadiq Kamel Gharkan +2 more
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