Results 21 to 30 of about 105,769,074 (273)

Compress-and-Forward Via Multilevel Coding and Trellis Coded Quantization

open access: yesIEEE Communications Letters, 2021
Compress-forward (CF) relays can improve communication rates even when the relay cannot decode the source signal. Efficient implementation of CF is a topic of contemporary interest, in part because of its potential impact on wireless technologies such as cloud-RAN.
Heping Wan   +2 more
openaire   +2 more sources

A Fast Sparse Azimuth Super-Resolution Imaging Method of Real Aperture Radar Based on Iterative Reweighted Least Squares With Linear Sketching

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
It is greatly significant to achieve radar forward-looking region imaging. Due to the limitation of phase ambiguity and small Doppler gradient in forward-looking region, synthetic aperture radar and Doppler beam sharpening cannot work for forward-looking
Xingyu Tuo   +3 more
doaj   +1 more source

SVD Entropy Reveals the High Complexity of Ecological Networks

open access: yesFrontiers in Ecology and Evolution, 2021
Quantifying the complexity of ecological networks has remained elusive. Primarily, complexity has been defined on the basis of the structural (or behavioural) complexity of the system.
Tanya Strydom   +4 more
doaj   +1 more source

Perbandingan Kinerja Non-Orthogonal dan Orthogonal Amplify and Forward pada Two-Way Cooperative WLAN

open access: yesJurnal Nasional Teknik Elektro dan Teknologi Informasi, 2017
Nowadays, the advancement of Wireless Local Area Network (WLAN) technology has developed very rapidly because it is very practical and has effective mobility level. In practice, there is a major problem in wireless communications systems, which is fading.
Kurnia Rizki, Nasaruddin, Ramzi Adriman
doaj   +1 more source

Full-Duplex Relaying for Opportunistic Spectrum Access Under an Overall Power Constraint

open access: yesIEEE Access, 2020
To meet the bold requirements of future generation networks, emerging technologies such as opportunistic spectrum access, multi-tier networks, full-duplexing and cooperative networks have to be exploited.
Anne Savard, E. Veronica Belmega
doaj   +1 more source

Lossless Image Steganography Based on Invertible Neural Networks

open access: yesEntropy, 2022
Image steganography is a scheme that hides secret information in a cover image without being perceived. Most of the existing steganography methods are more concerned about the visual similarity between the stego image and the cover image, and they ignore
Lianshan Liu, Li Tang, Weimin Zheng
doaj   +1 more source

Nonlinear Behavior of High-Intensity Ultrasound Propagation in an Ideal Fluid

open access: yesAcoustics, 2020
In this paper, nonlinearity associated with intense ultrasound is studied by using the one-dimensional motion of nonlinear shock wave in an ideal fluid. In nonlinear acoustics, the wave speed of different segments of a waveform is different, which causes
Jitendra A. Kewalramani   +4 more
doaj   +1 more source

Compute-Compress-and-Forward: Exploiting Asymmetry of Wireless Relay Networks [PDF]

open access: yesIEEE Transactions on Signal Processing, 2016
23 pages, 4 figures, journal ...
Yihua Tan, Xiaojun Yuan 0002
openaire   +2 more sources

Power and Resource Allocation for Orthogonal Multiple Access Relay Systems

open access: yesEURASIP Journal on Advances in Signal Processing, 2008
We study the problem of joint power and channel resource allocation for orthogonal multiple access relay (MAR) systems in order to maximize the achievable rate region. Four relaying strategies are considered; namely, regenerative decode-and-forward (RDF),
Timothy N. Davidson, Wessam Mesbah
doaj   +1 more source

An IoT-Based Real-Time Intelligent Monitoring and Notification System of Cold Storage

open access: yesIEEE Access, 2021
The intake of the perishable fruits and vegetables (FVs) in the human diet can contribute to reduce the risk of some chronic diseases. But unfortunately, FVs loss rate is high among all the food produced annually and occurs at storage stage of post ...
Hina Afreen, Imran Sarwar Bajwa
doaj   +1 more source

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