Results 31 to 40 of about 451,753 (296)

Generalized PSK in Space Time Coding [PDF]

open access: yes, 2004
A wireless communication system using multiple antennas promises reliable transmission under Rayleigh flat fading assumptions. Design criteria and practical schemes have been presented for both coherent and non-coherent communication channels.
Han, Guangyue
core   +3 more sources

Spatial resolution in GNSS-R under coherent scattering [PDF]

open access: yes, 2020
© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes,creating new ...
Camps Carmona, Adriano José
core   +2 more sources

Coherent Signal DOA Estimation for MIMO Radar under Composite Background of Strong Interference and Non-Uniform Noise

open access: yesSensors, 2022
To address the problems of low accuracy and low robustness of the conventional algorithm in estimating the direction of arrival (DOA) of coherent signals against a composite background of strong interference and non-uniform noise, in this paper, a ...
Bin Lin   +3 more
doaj   +1 more source

Direction-of-Arrival Estimation for Both Uncorrelated and Coherent Signals in Coprime Array

open access: yesIEEE Access, 2019
Direction-of-arrival (DOA) estimation in coprime array involves the problem that there is the coexistence of both uncorrelated signals and coherent signals in the multipath environment.
Haiyun Xu   +4 more
doaj   +1 more source

Robust Suppression of Deceptive Jamming with VHF-FDA-MIMO Radar under Multipath Effects

open access: yesRemote Sensing, 2022
Frequency diverse array multiple-input multiple-output (FDA-MIMO) radar has received a lot of attention due to the advantages of waveform diversity. Suppression of mainlobe deceptive jamming can be effectively achieved with the degree of freedom (DOF) in
Yibin Liu   +4 more
doaj   +1 more source

Cyclostationarity-based DOA estimation algorithms for coherent signals in impulsive noise environments

open access: yesEURASIP Journal on Wireless Communications and Networking, 2019
Estimating direction of arrival (DOA) is important in a variety of practical applications. Conventional cyclostationarity-based coherent DOA estimation algorithms are not robust to non-Gaussian α-stable impulsive noise.
Yang Liu   +4 more
doaj   +1 more source

Detection of coherent-pulse multi-frequency signals

open access: yesИзвестия высших учебных заведений. Поволжский регион:Технические науки, 2022
Background. The detection of coherent-pulse multi-frequency radar signals against the background of the receiver's own noise is considered. The purpose of this research is to synthesize and analyze algorithms for detecting quasi-deterministic and ...
D.I. Popov
doaj   +1 more source

A self-coherent receiver for detection of
PolMUX coherent signals

open access: yesOptics Express, 2012
A self-coherent receiver capable of demultiplexing PolMUX-signals without an external polarization controller is presented. Training sequences are introduced to estimate the polarization rotation, and a decision feedback recursive algorithm mitigates the random walk of the recovered field.
Li, Jingshi   +10 more
openaire   +4 more sources

Multiple Signals of Coherence Relations [PDF]

open access: yesDiscours, 2019
In this paper, we investigate the signalling of coherence relations when they are simultaneously indicated by more than one signal. In particular, we examine the co-occurrence of discourse markers and other relational signals when they are used together to mark a single relation. With the goal to identify the source of the usage of multiple signals, we
Das, Debopam, Taboada, Maite
openaire   +3 more sources

DAB Signal Preprocessing for Passive Coherent Location [PDF]

open access: yesSensors, 2022
Digital Audio Broadcast (DAB) transmitters can be successfully used as illumination sources in Passive Coherent Location (PCL). However, extending the integration time in such a configuration leads to the occurrence of periodical artifacts in the bistatic range/Doppler plots, resulting from the time structure of the DAB signal.
openaire   +3 more sources

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