Results 141 to 150 of about 225,472 (170)

Power versus relay selection in adaptive relay networks

2010 7th International Symposium on Wireless Communication Systems, 2010
Adaptive relaying schemes significantly improve the performance of relay networks by switching the forwarding technique according to the reliability of the received signal. Moreover, efficient resource allocation is vital for meliorating the relay network performance.
Aimal Khan, Volker Kühn 0001
openaire   +1 more source

An Improved Relay Selection Scheme with Hybrid Relaying Protocols

IEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference, 2007
In this paper, we propose an improved relay selection scheme based on a hybrid relaying protocol (RS-HRP). In the proposed scheme, all the relays are included into two groups, referred to as an amplify and forward (AAF) and a decode and forward (DAF) relay groups. The relays which decode successfully are included in the DAF group and the rest of relays,
Yonghui Li 0001, Branka Vucetic, Zhuo Chen 0001, Jinhong Yuan   +3 more
openaire   +1 more source

Opportunistic relays selection for successive relaying with inter-relay interference

2015 IEEE 12th Malaysia International Conference on Communications (MICC), 2015
In the presence of inter-relay interference, the capacity performance of successive relaying can be severely degraded. Existing literature on successive relaying does not consider the channel quality of the inter-relay channel in maximising the capacity performance.
Qian Yu Liau, Chee Yen Leow
openaire   +1 more source

SNR-based relay selection scheme for cooperative relay networks

2015 International Wireless Communications and Mobile Computing Conference (IWCMC), 2015
In this paper, a cooperative relaying scheme where optimum threshold value based relay selection algorithm is considered for decode and forward (DF) based cooperative relaying networks is proposed over the Nakagami-m fading channels. Relay selection scheme with optimum threshold value is an effective method to decrease the error propagations that occur
Erdogan Aydin, Haci Illian
openaire   +3 more sources

Secrecy Analysis of Modify-and-Forward Relaying With Relay Selection

IEEE Transactions on Vehicular Technology, 2019
This paper investigates the physical-layer security of the modify-and-forward (MF) protocol in multi-relay and multi-eavesdropper networks. Three relay selection critera are developed according to the channel state information (CSI) acquisition. Criterion I requires the CSI of all main channels for relay selection.
openaire   +1 more source

Relay Selection with Limited Feedback for Multiple UE Relays

2011
When a source has insufficient information about relay-to-destination (R-D) link, like type-2 user equipment (UE) relaying, using average channel gain severely degrades the end-to-end error performance. In this paper, we propose a threshold based relay selection with limited feedback, which has more specific information about R-D link.
Kyungrok Oh, Dong In Kim
openaire   +1 more source

Relays selection with power allocation in relay networks

2015 4th International Conference on Computer Science and Network Technology (ICCSNT), 2015
Recently, the cooperative wireless communication system is attracting attention as 4G and beyond 4G techniques. Transmit rate and diversity are generally enhanced in MIMO systems, however, mobile devices are limited by size or hardware complexity to set many multi-antennas.
openaire   +1 more source

Relay Selection in NOMA-Based Diamond Relaying Networks

2022 24th International Conference on Advanced Communication Technology (ICACT), 2022
Noha H. Khattab, Samy S. Soliman, M. Saeed Darweesh, Amr A. El-Sherif   +3 more
openaire   +1 more source

Discrete relay beamforming for broadcasting with relay selection

2015 23nd Signal Processing and Communications Applications Conference (SIU), 2015
Ozlem Tugfe Demir, T. Engin Tuncer
openaire   +1 more source

Relay selectivity and technical efficiency in relaying and automation

2007 International Forum on Strategic Technology, 2007
The classification of the relay protection and automations, the other means of the monitoring, signaling, control, checking is presented. The analysis of relay selectivity is made. The probabilistic theory of the technical effect with very full account characteristic of control objects is used.
openaire   +1 more source