Results 261 to 270 of about 3,018,601 (297)

Cooperative Communications With Relay Selection Based on Deep Reinforcement Learning in Wireless Sensor Networks

IEEE Sensors Journal, 2019
Cooperative communication technology has become a research hotspot in wireless sensor networks (WSNs) in recent years, and will become one of the key technologies for improving spectrum utilization in wireless communication systems in the future.
Yuhan Su, Xiaozhen Lu, Yifeng Zhao, Lianfeng Huang, Xiaojiang Du   +4 more
semanticscholar   +1 more source

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

Joint Relay Selection and Power Allocation for Underwater Cooperative Optical Wireless Networks

IEEE Transactions on Wireless Communications, 2020
Cooperative transmission is a promising technology to expand communication range and improve system performance for underwater optical wireless communications (UOWCs). To adequately exploit the benefits of cooperative UOWCs, the relay selection and power
Fangyuan Xing, Hongxi Yin, Xiuyang Ji, V. Leung   +3 more
semanticscholar   +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

Energy Efficient Relay Selection and Resource Allocation in D2D-Enabled Mobile Edge Computing

IEEE Transactions on Vehicular Technology, 2020
In order to improve resource utilization and network capacity, we propose the Device-to-Device (D2D) enabled Mobile Edge Computing (MEC) system, where multiple Smart Devices (SDs) transmit the offloading data to the MEC server with the help of wireless ...
Y. Li, Gaochao Xu, Kun Yang, Jiaqi Ge, Peng Liu, Zhenjun Jin   +5 more
semanticscholar   +1 more source

Two-Stage Relay Selection for Enhancing Physical Layer Security in Non-Orthogonal Multiple Access

IEEE Transactions on Information Forensics and Security, 2019
In this paper, we examine the physical layer security of a cooperative relay network where two source-destination pairs communicate through a decode-and-forward (DF) relay in the presence of multiple eavesdroppers.
Youhong Feng, Shihao Yan, Chenxi Liu, Zhen Yang, Nan Yang   +4 more
semanticscholar   +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

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

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

NOMA based cognitive relaying: Transceiver hardware impairments, relay selection policies and outage performance comparison

Computer Communications, 2019
This paper considers cognitive radio (CR) inspired non-orthogonal multiple-access (NOMA). Such NOMA users with performance improvement can be achieved as deploying relay selection schemes.
D. Do, Anh-Tu Le
semanticscholar   +1 more source