Results 31 to 40 of about 484,819 (300)

Receiver Multiuser Diversity Aided Multi-Stage MMSE Multiuser Detection: A Low-Complexity Detector Fast-Converging to the Optimum [PDF]

, 2010
Design of low-complexity detection schemes that can approach near-optimum bit error rate (BER) performance in multiuser or other multiple-input multiple-output (MIMO) systems has always been highly challenging.
Yang, Lie-Liang, Lie-Liang Yang
core   +1 more source

Spectrum sensing algorithm based on stochastic resonance and non-central F-distribution

Dianxin kexue, 2023
To solve the problem that the detection probability of the spectrum sensing algorithm is low and the number of samples required for detection is large at low signal-to-noise ratio (SNR), a spectrum sensing algorithm based on stochastic resonance and non ...
Yuanmeng FAN, Shunlan LIU
doaj   +2 more sources

Influence of dense macrophyte vegetation and total gas saturation on the performance of acoustic telemetry

Animal Biotelemetry, 2022
Background Acoustic telemetry is widely used as a method for high resolution monitoring of aquatic animal movement to investigate relationships between individual animals and their environment.
Kirstine Thiemer, Robert J. Lennox, Thrond Oddvar Haugen   +2 more
doaj   +1 more source

Receiver Multiuser Diversity Aided Multi-Stage MMSE Multiuser Detection for DS-CDMA and SDMA Systems Employing I-Q Modulation [PDF]

, 2010
The so-called receiver multiuser diversity aided multistage minimum mean-square error multiuser detector (RMD/MS-MMSE MUD), which was proposed previously by the author, is investigated in the context of the direct-sequence code-division multiple-access ...
Yang, Lie-Liang, Lie-Liang Yang
core   +1 more source

Information divergence-based low probability of intercept waveform detection for multi-antenna intercept receivers

The Journal of Engineering, 2019
Based on the asymptotic spectral distribution of sample covariance matrix, a new low probability of interception (LPI) signal detection method for multi-antenna intercept receiver is proposed via reforming the noise sequence into a Wishart matrix.
Jun Chen, Fei Wang, Jianjiang Zhou, Chenguang Shi   +3 more
doaj   +1 more source

Higher-harmonic adaptation and the detection of squarewave gratings [PDF]

, 1987
Adaptation to a high contrast sinewave grating of 1 c/deg spatial frequency causes a large increase in the contrast threshold for a 1 c/deg test grating, but fails to raise the threshold for a squarewave grating of 0.33 c/deg, although the sensitivity of
Magnussen, S., Greenlee, Mark W., Svein Moagnussen, Mark W. Greenlee   +3 more
core   +1 more source

Improved probability hypothesis density filter for multi‐target tracking of non‐cooperative bistatic radar

IET Radar, Sonar & Navigation, 2022
Non‐cooperative bistatic radar refers to the passive bistatic radar using a non‐cooperative radar as the illuminator of opportunity. Limited by the non‐cooperation and bistatic configuration, multi‐target tracking of the non‐cooperative bistatic radar is
Sen Wang, Qinglong Bao, Jiameng Pan
doaj   +1 more source

A Time-Varying Chaotic Multitone Communication Method Based on OFDM for Low Detection Probability of Eavesdroppers

IEEE Access, 2021
Due to the rapid development of modern communication technology and the substantial improvement of the processing capacity of communication equipment, it has become a challenging and meaningful research direction to realize the covert transmission of ...
Shengnan Guo, Yongqing Fu
doaj   +1 more source

Trackline and point detection probabilities for acoustic surveys of Cuvier’s and Blainville’s beaked whales

, 2013
Acoustic survey methods can be used to estimate density and abundance using sounds produced by cetaceans and detected using hydrophones if the probability of detection can be estimated.
Gregory S. Schorr, Schorr, Greg S, de Soto, Natacha Aguilar, Natacha Aguilar de Soto, Tyack, Peter Lloyd, Barlow, Jay, Baird, Robin W, Jay Barlow, Russel D. Andrews, Andrews, Russ D, Mark P. Johnson, Robin W. Baird, Johnson, Mark J, Peter L. Tyack   +13 more
core   +1 more source

Assessing Population Trends of Species with Imperfect Detection: Double Count Analyses and Simulations Confirm Reliable Estimates in Brown Frogs

Animals, 2022
Most animal species are detected imperfectly and overlooking individuals can result in a biased inference of the abundance patterns and underlying processes.
Mattia Falaschi, Chiara Gibertini, Elia Lo Parrino, Martina Muraro, Benedetta Barzaghi, Raoul Manenti, Gentile Francesco Ficetola   +6 more
doaj   +1 more source