Results 31 to 40 of about 179,010,438 (302)

Computationally Efficient Compressed Sensing-Based Method via FG Nyström in Bistatic MIMO Radar with Array Gain-Phase Error Effect

open access: yesInternational Journal of Antennas and Propagation, 2020
In this paper, a robust angle estimator for uncorrelated targets that employs a compressed sense (CS) scheme following a fast greedy (FG) computation is proposed to achieve improved computational efficiency and performance for the bistatic MIMO radar ...
Jurong Hu   +3 more
doaj   +1 more source

Preset Conditional Generative Adversarial Network for Massive MIMO Detection

open access: yesIET Signal Processing, 2023
In recent years, extensive research has been conducted to obtain better detection performance by combining massive multiple-input multiple-output (MIMO) signal detection with deep neural network (DNN).
Yongzhi Yu   +3 more
doaj   +1 more source

Autoencoder-Based Signal Modulation and Demodulation Methods for Sonobuoy Signal Transmission and Reception

open access: yesSensors, 2022
Sonobuoy is a disposable device that collects underwater acoustic information and is designed to transmit signals collected in a particular area to nearby aircraft or ships and sink to the seabed upon completion of its mission. In a conventional sonobuoy
Jinuk Park, Jongwon Seok, Jungpyo Hong
doaj   +1 more source

Mobile unit velocity estimation based on the instantaneous frequency of the received signal [PDF]

open access: yes, 2004
This paper presents a new mobile station velocity estimator based on the first moment of the instantaneous frequency (IF) of the received signal. The effects of shadowing, additive noise, and scattering distribution on the proposed velocity estimator are
Azemi, G.   +5 more
core   +1 more source

History of 3141st Signal Service Group.

open access: yes, 2023
Details projects handled by the Outside Plant Engineering Section, activities in the Group Wire Section, what circuits were in full operation, historical records for the months of January and February 1945, the Crimea Conference, the 3140th Signal ...
Office of the Chief Signal Officer; Allied Force Headquarters, Signal Center; Headquarters, Mediterranean Theater of Operations, Office of the Chief Signal Officer; Back, George I.
core  

Development of the TanDEM-X Calibration Concept: Analysis of Systematic Errors [PDF]

open access: yes, 2010
The TanDEM-X mission, result of the partnership between the German Aerospace Center (DLR) and Astrium GmbH, opens a new era in spaceborne radar remote sensing. The first bistatic satellite synthetic aperture radar mission is formed by flying the TanDEM-
Fiedler, Hauke   +3 more
core   +1 more source

Bridging the Loneliness Gap: Depression, Connectivity, and Isolation in Pediatric Oncology Patients and Their Peers

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Loneliness is associated with adverse physical and mental health outcomes and remains understudied in children and adolescents undergoing cancer therapy. Pediatric oncology patients may be at increased risk due to medical isolation and disruption of social networks.
Charlotte N. Stahlfeld   +5 more
wiley   +1 more source

Maximum likelihood receivers for space-time coded MIMO systems with gaussian estimation errors [PDF]

open access: yes
Maximum likelihood (ML) receivers for space-time coded multiple-input multiple-output (MIMO) systems with Gaussian channel estimation errors are proposed. Two different cases are considered. In the first case, the conditional probability density function
Chen, Yunfei, Beaulieu, Norman C.
core   +1 more source

Stable signal recovery in compressed sensing with a structured matrix perturbation [PDF]

open access: yes, 2012
The sparse signal recovery in the standard compressed sensing (CS) problem requires that the sensing matrix be known a priori. Such an ideal assumption may not be met in practical applications where various errors and fluctuations exist in the sensing ...
Zai Yang   +5 more
core   +1 more source

LCMV Beamforming for a Novel Wireless Local Positioning System: Nonstationarity and Cyclostationarity Analysis

open access: yesEURASIP Journal on Advances in Signal Processing, 2007
This paper investigates the implementation of a novel wireless local positioning system (WLPS). WLPS main components are: (a) a dynamic base station (DBS) and (b) a transponder, both mounted on mobiles. The DBS periodically transmits ID request signals.
Tong Hui   +2 more
doaj   +2 more sources

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