Results 121 to 130 of about 7,335,937 (186)

High-Sensitivity, Large-Doppler-Range DSSS-GMSK Signal Acquisition Algorithm for Earth-Moon Space Satellite Communication. [PDF]

Sensors (Basel)
Lu Y, Wu M, Zhang W, Zhu Y, Xia Q, Zhang J.   +5 more
europepmc   +1 more source

Exploring the interplay of lattice distortion, magnetic ordering, and dielectric behavior in Dy₂NiFeO_6-δ synthesized via solution chemistry. [PDF]

Sci Rep
Punj S, Dhruv DB, Singh J, Somvanshi A, Kumar A, Abass KS.   +5 more
europepmc   +1 more source

Deep-learning-empowered programmable topolectrical circuits. [PDF]

Nat Commun
Jia H, Yang S, He J, Liu S, Chen H, Shang C, Ma S, Han P, Lee CH, Gao Z, Lai Y, Cui TJ.   +11 more
europepmc   +1 more source

HAO-AVP: An Entropy-Gini Reinforcement Learning Assisted Hierarchical Void Repair Protocol for Underwater Wireless Sensor Networks. [PDF]

Sensors (Basel)
Hao L, Ma C, Ao J.
europepmc   +1 more source

Paper-based laser-written CoO-graphene biosensor for wireless sweat uric acid detection. [PDF]

Sci Rep
Ganesan VK, Lee SP, Low JH, Lim EH, Chee PS, Tan CH.   +5 more
europepmc   +1 more source

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Frequency Hopping Pattern and Synchronization based on Hopping Spread Spectrum Communication

2021 IEEE 4th Advanced Information Management, Communicates, Electronic and Automation Control Conference (IMCEC), 2021
The frequency hopping pattern and synchronization technology are the cores of frequency hopping spread spectrum communication. The current hopping patterns are very complex and hard to implement. In this paper, a frequency hopping pattern with very long period is designed based on m-sequence, which is suitable for hardware implementation.
Yan Wang, Yan Hao, Hangcheng Han, Jinkun Lu, Hongzan Li   +4 more
exaly   +2 more sources

Time-hopping and frequency-hopping multiple-access packet communications

IEEE Transactions on Communications, 1990
Time-hopping and frequency-hopping multiple-access (TH/FHMA) packet communication systems are proposed and investigated. In TH/FHMA communication systems, a message packet is encoded into several subpackets via a Reed-Solomon error correcting code. The subpackets are transmitted over the channel using time-hopping and frequency-hopping patterns.
Alex W. Lam, Dilip V. Sarwate
openaire   +1 more source

Effect of PLL frequency synthesizer in FSK frequency-hopped communications

IEEE Transactions on Communications, 1989
Synthesizer transient and spur effects in an frequency-shift-keying frequency-hopped system are investigated. Models for transient analysis are developed, and resulting degradations to performance are computed. Compensation methods, such as ping-ponging multiple synthesizers and gating symbol detectors, are considered. A spur analysis is presented, and
John R. Alexovich, Robert M. Gagliardi
openaire   +1 more source

Adaptive frequency-hopping in HF communications

Proceedings 2011 International Conference on Transportation, Mechanical, and Electrical Engineering (TMEE), 2011
In the presence of the severe frequency selective fading due to ionospheric multi-path propagation and the abundance of interference from other users, the HF communication quality can be decreased drastically. The combination of adaptive frequency-hopping scheme and HF communication improves system throughput effectively.
null Yin Wenlong, null Cheng Yunpeng, null Shen Liang   +2 more
openaire   +1 more source

Fuzzy theory in frequency hop communication

ICCT'98. 1998 International Conference on Communication Technology. Proceedings (IEEE Cat. No.98EX243), 2002
Fuzzy theory can be used in many fields. There may be two applications of fuzzy theory in frequency hop communications. They are the adaptive fuzzy frequency hopping generator and adaptive frequency hop communications with fuzzy frequency estimation. This paper discusses both of these two applications. For an adaptive fuzzy frequency hopping generator,
null Zhao Hangsheng, null Zhang Hang, null Gan Zhongmin   +2 more
openaire   +1 more source