Results 191 to 200 of about 7,567 (237)

Intelligent Multicriteria DSSs

2000
The discussion of the basic MCDA concepts and approaches in chapter 2 demonstrated that the decision maker and his/her preferences constitute the focal point of interest within the MCDA methodological framework. This special characteristic of MCDA is in accordance with the decision making process in complex and ill-structured problem domains.
Constantin Zopounidis, Michael Doumpos
openaire   +1 more source

Performance Analysis for DSSS With Short Period Sequences Encountering Broadband Interference

IEEE Transactions on Vehicular Technology
Understanding fundamental limits of the anti-interference performance of direct sequence spread spectrum (DSSS) systems is essential for efficient anti-interference implementation.
Qiaran Lu, Fangmin He, Ze Wang, Yufeng Ma, Zhong Yang, Yaxing Li, Hao Wu, Wei Li   +7 more
semanticscholar   +1 more source

FPGA Implementation of Correlator for Direct Sequence Spread Spectrum (DSSS) Systems

2024 International Conference on Integrated Circuits and Communication Systems (ICICACS)
Spread Spectrum (SS) technology utilizes pseudo-noise codes to spread signal energy over a wider bandwidth, independent of message signal bandwidth. Direct Sequence Spread Spectrum (DSSS) employs pseudo-noise sequences synchronized at the receiver to ...
B. Satyanarayana, N. S. Teja, M. Pavan, Koduru Smrini, G. P. Kumar, Prudhvi Raj Budumuru   +5 more
semanticscholar   +1 more source

Fuzzy Logic Control for Doppler Search in DSSS Systems

IEEE transactions on fuzzy systems, 2020
The study on the Doppler frequency search strategy in direct sequence spread spectrum (DSSS) systems has been addressed in this article. To reduce the estimation error and alleviate the possible false detection, a novel Doppler search algorithm that ...
Xuesen Shi, Yuyao Shen, Yongqing Wang
semanticscholar   +1 more source

Performance of DSSS against Repeater Jamming

2006 13th IEEE International Conference on Electronics, Circuits and Systems, 2006
Direct sequence spread spectrum (DSSS) technique has been widely used in both military communications and commercial communications. The normal jamming types, including broadband noise, partial-band noise and so on, are ineffective at the current jamming power level when the processing gain is large enough.
Wang Hang, Wang Zanji, Guo Jingbo
openaire   +1 more source

GQDs/Sb2S3/TiO2 as a co-sensitized in DSSs: Improve the power conversion efficiency of DSSs through increasing light harvesting by using as-synthesized nanocomposite and mirror

, 2020
In present work, GQDs/Sb2S3/TiO2 composite was prepared by sonochemistry method with ultrasonic probe with 60 W/cm2 intensity and 18 kHz frequency. Based on this composite, two different cells in the configuration of FTO/TiO2/GQDs/Sb2S3/TiO2/N719/Pt and ...
Hakimeh Teymourinia, Mohammad Hossein Darvishnejad, Omid Amiri, M. Salavati‐Niasari, A. Reisi-Vanani, E. Ghanbari, H. Moayedi   +6 more
semanticscholar   +1 more source

A Novel Practical Method for Blind Detection of DSSS Signal in Multiple Signals Environment

International Bhurban Conference on Applied Sciences and Technology, 2020
Direct sequence spread spectrum (DSSS) communication has been extensively adopted in military and civilian fields because of its high processing gain, anti-jamming capability and low probability of interception (LPI).
Hassan Javed, Muhammad Rehan Khalid, H. Soomro   +2 more
semanticscholar   +1 more source

Compressed Receiver for Multipath DSSS Signals

IEEE Communications Letters, 2014
A compressed sensing (CS) assisted receiver for direct sequence spread spectrum (DSSS) signals transmitted over multipath frequency-selective channels is studied in this paper. We present a bit-error-rate analysis for the CS-domain maximum ratio combining receiver with perfect channel state information (CSI), and hence, the CS-induced signal-to-noise ...
Shuai Wang, Jianping An, Yanyang Ren, Tiexing Wang, Xiangyuan Bu   +4 more
openaire   +1 more source

State transition assisted DSSS code synchronization

MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341), 2003
Rapid code phase synchronization is a difficult challenge for direct sequence spread spectrum systems that utilize long spreading codes. Current synchronization techniques have been limited to either exhaustive search over the spreading code time-frequency uncertainty region, or various ad hoc techniques, which work only at high signal to noise ratios.
S.J. Curry, D.M. Schwartz, J.F. Collins
openaire   +1 more source

Chirp-rate quasi-orthogonality based DSSS-CDMA system for underwater acoustic channel

, 2020
Underwater network node positioning is a key supporting technology for underwater networks. Generally, nodes at known locations (anchor nodes) are used to transmit location information to the node to be located, and the node to be located performs ...
Fei Yuan, Zhenyu Jia, En Cheng
semanticscholar   +1 more source