Results 61 to 70 of about 19,117 (286)

Combining Decoded-and-Forwarded Signals in Gaussian Cooperative Channels [PDF]

2006 IEEE International Symposium on Signal Processing and Information Technology, 2006
The goal of this paper is to investigate different ways of combining signals that have been decoded- nd-forwarded by a bunch of relays. We more deeply look at the case where the relays are in bad reception conditions and the cooperation powers are sufficiently high.
Djeumou, Brice, Lasaulce, Samson, Klein, Andrew   +2 more
openaire   +1 more source

Modal Analysis of Light Propagation, Polarization and Diffraction by Cholesteric Liquid Crystal Layers

Advanced Functional Materials, EarlyView.
The analysis of optical eigenmodes in chiral liquid crystal with perpendicular or tilted helical axis, and their correspondence with the external medium, leads to an intuitive understanding of the angle and wavelength dependency of transmissive and reflective diffraction.
Ke Xu, Pouya Nosratkhah, Le Zhou, Shengzhu Yi, Giorgio Manzoni, Kristiaan Neyts   +5 more
wiley   +1 more source

Successive Decode-and-Forward Relaying With Privacy-Aware Interference Suppression

IEEE Access, 2020
Successive relaying holds the promise of achieving spatial diversity gain for single-antenna users while recovering the multiplexing loss due to the half-duplex relaying in B5G/6G.
Jianjing Wei, Jie Wei, Shaoling Hu, Wei Chen   +3 more
doaj   +1 more source

Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application

Advanced Materials, EarlyView.
This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong, You Zhou, Qingxiu Li, Wenyu Zhao, Sunyingyue Geng, Hangfei Li, Yan‐Bing Leng, Shirui Zhu, Guanglong Ding, Yongbiao Zhai, Ziyu Lv, Ye Zhou, Su‐Ting Han   +12 more
wiley   +1 more source

Novel half-duplex relay strategy and its resource allocation

Tongxin xuebao, 2009
Conventional time-division half-duplex relay strategies based on amplify-and-forward or decode-and-forward strategy could relieve relay nodes from full-duplex requirement but lead to degraded spectrum efficiency.
LI Yong, WANG Wen-bo, KONG Jia, PENG Mu-gen   +3 more
doaj   +2 more sources

Energy Efficient Joint Power Optimization for Full-Duplex Relaying

IEEE Access, 2019
Full-duplex (FD) relaying is a promising technology for the next generation communication systems. In this paper, we aim to jointly optimize the source and relay transmit powers to maximize the energy efficiency (EE) for both amplify-and-forward (AF) and
Zhenyao He, Hong Shen, Wei Xu, Chunming Zhao   +3 more
doaj   +1 more source

Neuromorphic Electronics for Intelligence Everywhere: Emerging Devices, Flexible Platforms, and Scalable System Architectures

Advanced Materials, EarlyView.
The perspective presents an integrated view of neuromorphic technologies, from device physics to real‐time applicability, while highlighting the necessity of full‐stack co‐optimization. By outlining practical hardware‐level strategies to exploit device behavior and mitigate non‐idealities, it shows pathways for building efficient, scalable, and ...
Kapil Bhardwaj, Roshni Satheesh Babu, Yuxin Xia, Eva Bestelink, Radu Sporea, Nikos Hastas, Ioannis Zeimpekis, Dimitra G. Georgiadou, Sayani Majumdar   +8 more
wiley   +1 more source

Code-rate-optimized differentially modulated near-capacity cooperation [PDF]

, 2011
It is widely recognized that half-duplex-relay-aided differential decode-and-forward (DDF) cooperative transmission schemes are capable of achieving a cooperative diversity gain, while circumventing the potentially excessive-complexity and yet inaccurate
Wang, Li, Kong, Lingkun, Ng, Soon, Hanzo, Lajos   +3 more
core   +2 more sources

On the Performance of a Wireless Powered Communication System Using a Helping Relay [PDF]

Radioengineering, 2017
This paper studies the outage performance and system throughput of a bidirectional wireless information and power transfer system with a helping relay.
T. N. Nguyen, P. T. Tran, H. S. Nguyen, D. T. Do, M. Voznak   +4 more
doaj  

On implementation aspects of decode and forward and compress and forward relay protocols [PDF]

, 2018
In this work, the common relay protocols Decode-and-Forward and Compress-and-Forward (CF) are investigated from a practical point of view: This involves on the one hand the impact of imperfections like channel and carrier phase stimation errors and on ...
Kern, Daniel (gnd: 1175460583), Kern, Daniel   +1 more
core   +1 more source