Results 41 to 50 of about 105,891,633 (212)

Hybrid Full-Duplex and Alternate Multiple Relay Selection and Beamforming in AF Cooperative Networks

open access: yesIEEE Access, 2018
In this paper, multiple relay selection and beamforming techniques are applied to a dual-hop full-duplex (FD) amplify-and-forward relaying network. We show that our proposed techniques allow the selection to be adaptive to the residual self-interference (
Lutfi Samara, Ala Gouissem, Ridha Hamila
doaj   +1 more source

Sequential slotted amplify-and-forward with partial relay isolation

open access: yes, 2012
In this paper, we propose a novel relay ordering and scheduling strategy for the sequential slotted amplify-and-forward (SAF) protocol and evaluate its performance in terms of diversity-multiplexing trade-off (DMT).
A. D. S. Jayalath   +5 more
core   +1 more source

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

open access: yesRadioengineering, 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   +4 more
doaj  

Outage probability of unequal block-based OFDM Amplify-and-Forward relay protocol over wideband channels

open access: yes, 2012
In this paper, we consider a dual-hop multiplerelay network with orthogonal frequency division multiplexing (OFDM) based Amplify-and-Forward (AF) relay protocol over frequency-selective channels. In practice, subcarriers suffered that suffer deep fade in
Xiang, Wei   +5 more
core   +1 more source

Secrecy Performance Analysis of Relay Selection in Cooperative NOMA Systems

open access: yesIEEE Access, 2019
This paper investigates the security performance of two relay selection schemes for cooperative non-orthogonal multiple access (NOMA) systems, where K randomly distributed relays are employed with either decode-and-forward (DF) or amplify-and-forward (AF)
Zhenling Wang, Zhangyou Peng
doaj   +1 more source

Interference Channels With Full-Duplex Amplify-and-Forward Receiver Cooperations

open access: yesIEEE Access, 2020
This paper considers a two-transmitter and two-receiver interference channel (IC), where each transmitter sends a message to its desired receiver. In particular, the full-duplex (FD) amplify-and-forward (AF) protocol is adopted to build up the receiver ...
Dan Wang   +3 more
doaj   +1 more source

Near-Capacity Turbo Coded Soft-decision Aided DAPSK/Star-QAM for Amplify-and-Forward based Cooperative Communications [PDF]

open access: yes, 2013
Multilevel Differential Amplitude and Phase-Shift Keying (DAPSK) schemes do not require any channel estimation, which results in low complexity.
Liang, Dandan   +2 more
core  

Optimal relay selection scheme and outage probability analysis in cooperative wireless networks

open access: yesDianxin kexue, 2018
Optimal relay selection can effectively improve the system performance in the communication network with cooperative relays from the view of physical layer security.The optimal relay selection schemes for relay transmission system with multiple single ...
Youhong FENG   +5 more
doaj   +2 more sources

Adaptive AF/DF Selection With FD/HD Switching in Two-Way Relay Networks

open access: yesIEEE Access, 2017
The full-duplex (FD) and two-way relay are promising techniques for their high spectrum efficiency. However, the incompletely self-interference cancellation may reduce the performance gain of two-way relay networks, which operates in FD mode.
Quanqiang Miao, Bo Bai, Wei Chen
doaj   +1 more source

Physical layer multicasting over 2-hop network using dual amplify and forward relay

open access: yes, 2010
The inherent multicast nature of the wireless medium can be exploited over two hop networks paves a way for Physical layer multicasting. The system performance gain can be achieved through multicast diversity achieved with dual amplify-and-forward (AF ...
Xiang, Wei   +9 more
core   +1 more source

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