Results 251 to 260 of about 3,018,601 (297)

Relay selection in bidirectional relay communication

2007 IEEE 8th Workshop on Signal Processing Advances in Wireless Communications, 2007
We consider the problem of relay selection in a scenario with N relay nodes. A half-duplex relay node enables bidrectional communication between two nodes with a spectral efficient two phase protocol. In the first phase, both nodes transmit a message to a relay node, which decodes the messages and broadcasts a composition in the succeeding phase.
Tobias J. Oechtering, Holger Boche
openaire   +1 more source

Relay Selection for UAV-Assisted Urban Vehicular Ad Hoc Networks

IEEE Wireless Communications Letters, 2020
This letter investigates the relay selection problem for the air-to-ground vehicular ad hoc networks (A2G VANETs). Specifically, we use unmanned aerial vehicle (UAV) to enhance VANETs communications and network performance. For the considered network, we
Yixin He, Daosen Zhai, Yi Jiang, Ruonan Zhang   +3 more
semanticscholar   +1 more source

Neural Network-Based Relay Selection in Two-Way SWIPT-Enabled Cognitive Radio Networks

IEEE Transactions on Vehicular Technology, 2020
In this paper, we investigate the relay selection problem for two-way simultaneous wireless information and power transfer (SWIPT) enabled cognitive radio networks.
Zhi Zhang, Yimin Lu, Yuzhen Huang, Ping Zhang   +3 more
semanticscholar   +1 more source

Outdated Relay Selection in Two-Way Relay Network

IEEE Transactions on Vehicular Technology, 2013
In this paper, we consider a two-way relay network (TWRN) with multiple amplify-and-forward (AF) relays, out of which the best one is selected to assist the data communication between two sources. The relay selection is based on the outdated channel state information (CSI), and we study its effect on the system performance in the independent but not ...
Lisheng Fan, Xianfu Lei, Rose Qingyang Hu, Winston Seah   +3 more
openaire   +1 more source

Relay selection strategy for parallel relayed FSO systems

2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2017
This paper describes a coherent tree-space optical (FSO) communication system consisting of multiple parallel relays and two terminal nodes. When direct communication between the two terminal nodes of the network is not possible, one relay is selected to establish a dual-hop communication link between them.
Parul Puri, Parul Garg
openaire   +1 more source

Energy-Aware Relay Selection Improves Security-Reliability Tradeoff in Energy Harvesting Cooperative Cognitive Radio Systems

IEEE Transactions on Vehicular Technology, 2020
This article investigates the physical layer security for a cooperative cognitive radio (CCR) system with energy-harvesting (EH) technique, which consists of a cognitive source (CS), multiple cognitive relays (CRs) and a cognitive destination (CD) as ...
Peishun Yan, Yulong Zou, Xiaojin Ding, Jia Zhu   +3 more
semanticscholar   +1 more source

Optimal Relay Selection for Secure NOMA Systems Under Untrusted Users

IEEE Transactions on Vehicular Technology, 2020
The key idea of non-orthogonal multiple access (NOMA) is to serve multiple users in the same frequency band to improve the spectral efficiency. Whereas a security flaw emerges in the presence of untrusted users or low security clearance users who can ...
Kunrui Cao, Buhong Wang, Haiyang Ding, Tengyao Li, Feng-kui Gong   +4 more
semanticscholar   +1 more source

Relay Selection for Cooperative Relaying Networks With Small Buffers

IEEE Transactions on Vehicular Technology, 2016
Buffer-aided relaying, which combines relay selection and packet buffering, has recently been studied to mitigate throughput and multiplexing gain loss of two-hop relaying protocols. However, existing buffer-aided relaying schemes require large buffers and a long initialization process for minimizing the outage probability.
Syuan-Li Lin, Kuang-Hao Liu
openaire   +1 more source

On the Capacity of Full-Duplex Relaying with Partial Relay Selection

Wireless Personal Communications, 2013
This paper focus on the full-duplex relaying with partial relay selection. Closed-form expressions for outage and average capacity of a decode-and-forward relay system are derived in an independent but not identically distributed Rayleigh fading environment. The analytical results are compared with the simulated results and a good agreement is obtained.
Xianyi Rui, Jia Hou, Liulei Zhou
openaire   +1 more source

Triggering and Relay Node Selection for Self-User Relaying

IEEE Communications Letters, 2015
Self-user relaying technology is designed to support multiple self-owned devices especially when wearable devices are becoming more popular. In this letter, with a consideration of power control and discontinuous reception mechanism, a power model and energy metric are derived to analyze self-user relaying performance. Results show that under a typical
Chie Ming Chou, ChingYao Huang
openaire   +1 more source