Results 41 to 50 of about 395,124 (322)

Full Duplex AF and DF Relaying Under Channel Estimation Errors for V2V Communications

open access: yesIEEE Access, 2018
In this paper, we investigate the outage performance of full-duplex (FD) and half-duplex (HD) vehicle to vehicle (V2V) networks. We consider two vehicular communication scenarios with the assistance of roadside unit (RSU), i.e., RSU-to-vehicle-to-vehicle
Siye Wang, Dandi Wang, Chao Li, Wenbo Xu
doaj   +1 more source

Energy Efficient Joint Power Optimization for Full-Duplex Relaying

open access: yesIEEE 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   +3 more
doaj   +1 more source

Joint Resource Optimization for Cognitive Sensor Networks with SWIPT-Enabled Relay

open access: yesSensors, 2017
Energy-constrained wireless networks, such as wireless sensor networks (WSNs), are usually powered by fixed energy supplies (e.g., batteries), which limits the operation time of networks.
Weidang Lu   +4 more
doaj   +1 more source

Timing Estimation and Resynchronization for Amplify-and-Forward Communication Systems [PDF]

open access: yesIEEE Transactions on Signal Processing, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xing, C, Chan, SC, Li, X, Wu, YC
openaire   +3 more sources

Performance Analysis of Full-Duplex Amplify-and-Forward Relay System with Hardware Impairments and Imperfect Self-Interference Cancellation

open access: yesWireless Communications and Mobile Computing, 2019
In this paper, we analyze the performance of a full-duplex (FD) amplify-and-forward (AF) relay system with imperfect hardware. Besides the aggregate hardware impairments of the imperfect transceiver, we also consider the impact of residual self ...
Nguyen Ba Cao, X. Tran
semanticscholar   +1 more source

Performance of a Cognitive Relay Network under AF Relay Selection Scheme with Imperfect Channel Estimation [PDF]

open access: yesRadioengineering, 2016
In this paper outage performance of a secondary user (SU) is evaluated under amplify and forward (AF) relay selection scheme with an imperfect channel state information (CSI)while sharing spectrum in an underlay cognitive radio network (CRN).
B. Prasad, S. D. Roy, S. Kundu
doaj  

Power allocation and capacity optimization of multi-relay cooperative communication system in tunnel

open access: yesGong-kuang zidonghua, 2015
The multi-relay cooperative communication system model in rectangular tunnel based on multimode channel model was established, and the channel capacity calculation formulas of multi-relay cooperative communication system in amplify and forward mode and ...
ZHAI Wenyan   +3 more
doaj   +1 more source

Multicast Transmissions With Full-Duplex Amplify-and-Forward User Cooperation

open access: yesIEEE Access, 2020
In order to improve the multicast transmissions, a full-duplex (FD) user cooperation scheme is proposed. In this paper, the transmitter sends the common messages to two FD users, and each user forwards its received signals to its counterpart by amplify ...
Linsong Du, Han Zhang, Chuan Huang
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

OFDM With Index Modulation Assisted by Multiple Amplify-and-Forward Relays

open access: yesIEEE Wireless Communications Letters, 2019
A multi-relay assisted orthogonal frequency division multiplexing system with index modulation is proposed in this letter, assuming that amplify-and-forward (AF) relaying protocol is adopted at relays.
Guo Sheng   +4 more
semanticscholar   +1 more source

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