Results 121 to 130 of about 23,853 (156)

Outdated Relay Selection in Two-Way Relay Network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 The relay selection is based on the outdated channel state information (CSI), and we study its effect on the system performance in the independent but not ...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

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

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

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

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

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

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