Results 31 to 40 of about 386 (162)

Performance analysis of DSSS system with periodic sequence against CW interference1

open access: yesTongxin xuebao, 2007
Based on the brief account of the performance analysis result of direct sequence spread spectrum(DSSS) system against single tone continuous wave(CW) interference obtained from the traditional stand Gaussian approximation(SGA) hypothesis,the mathematical
WEI An-quan1, SHEN Lian-feng 1
doaj   +2 more sources

AN INTERFERENCE-IMMUNE COMMUNICATION SYSTEM FOR DIGITAL DATA TRANSMISSION BASED ON A MULTI-CHANNEL CORRELATOR Part 1. DEVELOPMENT OF A SIGNAL FORMATION AND DECODING ALGORITHM FOR THE SUB-NOISE COMMUNICATION SYSTEM [PDF]

open access: yesRadio Physics and Radio Astronomy
Subject and Purpose. The work aims to develop and study an interference-immune radio communication system for transmitting and receiving digital information and video images using a Software-Defined Radio (SDR). Methods and Methodology.
A. V. Varavin   +7 more
doaj   +1 more source

A Systematic Review on Applications of Artificial Intelligence for Obesity Prevention

open access: yesObesity Reviews, EarlyView.
ABSTRACT This systematic review examines the applications of artificial intelligence (AI) in preventing obesity, addressing a critical public health issue that affects a substantial portion of the population. With obesity rates rising alarmingly, particularly in the United States, this review synthesizes findings from 46 studies published between 2008 ...
Atefehsadat Haghighathoseini   +4 more
wiley   +1 more source

Acceleration‐Aware Estimation and Compensation of Doppler Scale for Mobile UWA OFDM Systems

open access: yesIET Communications, Volume 20, Issue 1, January/December 2026.
We propose a novel method to estimate and compensate for the Doppler scale caused by acceleration in orthogonal frequency division multiplexing (OFDM)‐based underwater acoustic (UWA) systems. Simulation results under additive white Gaussian noise (AWGN), synthetic multipath and realistic waymark channel conditions demonstrate that the proposed approach
Yong‐Ho Cho, Seung‐Geun Kim
wiley   +1 more source

Turbo iterative acquisition algorithm for satellite high-mobility DSSS signal

open access: yesTongxin xuebao, 2021
To solve the problems of the low acquisition probability and high computational complexity in satellite high-mobility communications, a new factor graph was designed for acquisition of the high-mobility direct sequence spread spectrum (DSSS) signal ...
Chunxiao JIANG, Jiawei WANG
doaj   +2 more sources

Blind Estimation of Self-Synchronous Scrambler Using Orthogonal Complement Space in DSSS Systems

open access: yesIEEE Access, 2022
In a non-cooperative context, a receiver has to estimate the communication parameters without any prior knowledge of the transmitter, which is highly demanding.
Yoonji Kim   +3 more
doaj   +1 more source

New Mechanisms of Resistance to CAA and OSBPI Fungicides in Phytophthora infestans

open access: yesPlant Pathology, Volume 75, Issue 1, January/February 2026.
This study presents the first report of the mechanism behind mandipropamid resistance in Phytophthora infestans, the newly discovered presence of combined resistance to CAAs and OXTP in potato fields and recommendations for revised fungicide management strategies for potato late blight control. ABSTRACT Field observations from Denmark in 2021 suggested
Stefano F. F. Torriani   +8 more
wiley   +1 more source

Identity‐Enabled CDMA LiDAR for Massively Parallel Ranging with a Single‐Element Receiver

open access: yesLaser &Photonics Reviews, Volume 19, Issue 23, December 3, 2025.
A novel LiDAR system integrates CDMA modulation with a single‐element detector to achieve massive channel parallel 3D imaging. By using a user identification code and a correlation‐based feedback loop, it overcomes signal collisions and the near‐far problem.
Yixiu Shen, Zi Heng Lim, Guangya Zhou
wiley   +1 more source

A Blind Despreading and Demodulation Method for QPSK-DSSS Signal With Unknown Carrier Offset Based on Matrix Subspace Analysis

open access: yesIEEE Access, 2019
Direct sequence spread spectrum (DSSS) signals are widely used in various military and civilian communication systems. It adopts the pseudorandom (PN) sequence to modulate baseband signal before transmission, leading to some unique and useful properties ...
Zhaoyang Qiu, Hua Peng, Tianyun Li
doaj   +1 more source

Acupuncture's Multisystem Neuroimmunomodulation: Central–Peripheral Interactions in Gastroenteric, Psychiatric, and Chronic Pain Disorders

open access: yesCNS Neuroscience &Therapeutics, Volume 31, Issue 11, November 2025.
This work elucidates acupuncture's multisystem therapeutic mechanisms through central‐peripheral crosstalk. Using functional gastrointestinal disorders, psychiatric disorders, and chronic pain models, we demonstrate its efficacy in rebalancing gut‐brain signaling, neuroimmune‐endocrine integration, and humoral network modulation.
Lijuan Zhang   +6 more
wiley   +1 more source

Home - About - Disclaimer - Privacy