Cooperative NOMA system with incremental relaying over Nakagami- fading channels by Zhenling Wang, Dawei Qiao

“…In our article, we apply incremental relay to the cooperative non-orthogonal multiple access network, in which the incremental relay employs amplify and forward protocol. …”
Get full text

A Path-Priority Based Relay Selection Algorithm for VoIP by Hua Qu, Jihong Zhao, Lixia Wang, Shiqi Dong

Subjects: Get full text

Tasking planning based on task splitting and merging in relay satellite network by Run-zi LIU, Min SHENG, Cheng-yuan TANG, Jian-dong LI, Kai DU, Yong-an YANG

Subjects: “…relay satellite system…”
Get full text

Resource Allocation for Two-Way Relay Network Based on Cognitive Radio by Shuang Liang, Shouyi Yang, Wanming Hao

Subjects: Get full text

Artificial noise aided secure beamforming for multi-antenna relay systems by Li-jian ZHANG, Liang JIN, Lu LIU, Wen-yu LUO

“…In the amplify-and-forward (AF) relay systems，the confidential information forwarded by the relay can be intercepted by the eavesdroppers.For guaranteeing the secure communications，an artificial noise aided secure beamforming method is proposed.The goal is to maximize the secrecy rate of the system by jointly designing the beamforming matrix and the artificial noise (AN) covariance matrix at the relay subject to the total power and the per-antenna power constraints.This non-convex secrecy rate maximization (SRM) problem can be recast as a two-level optimization problem.The outer part can be solved by performing a one-dimensional search，and the inner part can be handled by the semidefinite relaxation (SDR) technique and interior-point methods.It is shown that there always exists a rank-one optimal solution for the SDR problem，i.e.…”
Get full text

Resource allocation scheme in two-way multi-relay OFDM system by Xuan-wei LIANG, Qi ZHU, Guang-jun LIANG

Subjects: Get full text

Spectral efficient optimisation for multihop relay networks adopting HARQ schemes by Junmei Han, Yong Xi, Jibo Wei

Subjects: Get full text

On the Multiuser Diversity of Relay-Aided Downlink Systems Using Reduced Feedback by Yong-Up Jang, Won-Yong Shin

“…We introduce an efficient multiuser scheduling method using amplify-and-forward relaying in relay-aided downlink systems, consisting of one base station (BS), one relay station, and multiple mobile stations (MSs). …”
Get full text

Joint Next-Hop/Relay Selection for Distributive Multihop Cooperative Networks by Ahmed Alkhayyat

“…Next-hop and relay nodes selection schemes determine the optimal next-hop node toward the destination and relay node between the source and the optimal next-hop and/or destination. …”
Get full text

Buffer-aided multiple-antenna relay strategy for 5G systems by Jun ZHAN, Qifa YAN, Xiaohu TANG

“…Buffer-aided multiple-antenna relay technology can provide the 5G communication system with wide coverage,and improve the system throughput performance effectively.A three-node multiple-antenna buffer-aided relay system was investigated and thus an optimal buffer-aided relay strategy,namely joint adaptive link selection and power allocation protocol,which maximizes the average throughput of system was proposed.The analytical results indicate that the optimal link selection policy depends only on the current instantaneous channel state information and the statistical channel information of related links,and the optimal power allocation scheme has equal power allocation for the transmitted data flows.The simulation results show that buffer used in relay could significantly improve the throughput of relay system compared to the relay system without buffer.In addition,the MIMO technique can achieve the multiplexing gain by multiple antennas,and then improve the throughput of buffer-aided relay system further.…”
Get full text

The Mitochondrial Disulfide Relay System: Roles in Oxidative Protein Folding and Beyond by Manuel Fischer, Jan Riemer

“…The main components of this disulfide relay machinery are the oxidoreductase Mia40 and the sulfhydryl oxidase Erv1/ALR. …”
Get full text

Quantitative analysis of the influence of asymmetric channel delay on relay protection's reliability by Huisheng GAO, Qing SHEN

Subjects: Get full text

Detection for physical-layer network coding in two-way relay channels by Wei YAN, Yue-ming CAI, Cheng-kang PAN

“…The detection for physical-layer network coding (PNC) in two-way relay channels was investigated.Maximum-likelihood (ML) detection not only had great performance but also had high computational complexity.Therefore,without channel state information (CSI) at source nodes,two detection schemes were proposed.The first scheme was likelihood ratio(LR)detection based on LR function,and the other was maximum a posteriori probability (MAP) detection based on MAP rule.Meanwhile,It carried out similar analysis if CSI was available at source nodes.Compared to ML detection which separately detects two source messages,numerical and simulation results show that LR detection outperforms it in terms of BER metric with the requirement for additional noise variance information.And MAP detection is equivalent to ML detection,and it has lower computational complexity.…”
Get full text

Throughput Analysis and Optimization of Relay Selection Techniques for Millimeter Wave Communications by Raed Alhamad, Hatem Boujemaa

“…In this paper, we optimize the throughput of millimeter wave communications using relay selection techniques. We study opportunistic amplify and forward (OAF), opportunistic decode and forward (ODF), and partial and reactive relay selection (PRS and RRS). …”
Get full text

On the Problem of Energy Balanced Relay Sensor Placement in Wireless Sensor Networks by Jie Jia, Guiyuan Zhang, Xueli Wu, Jian Chen, Xingwei Wang, Xiaolei Yan

“…In this paper, we investigate the problem of joint placement for both relays and sensors to eliminate energy hole. We first theoretically conclude that balanced energy depletion is achievable with rational designed deployment density for relay nodes. …”
Get full text

Energy-efficiency based buffer-aided relay selection scheme in SWIPT by Xinlong HONG, Xiaorong XU, Yingbiao YAO

Subjects: Get full text

Optimal scalable redeployment algorithm of relay nodes in wireless sensor networks by Bin ZENG, Jun WEI, Lu YAO

Subjects: Get full text

Joint power control for untrusted relay cooperation-based confidential communication by Wen-jiang FENG, Wei-heng JIANG, Yi-na DENG, Yang YUAN

Subjects: Get full text

Development of the mathematical model for operation of digital substations relay protection complexes by A. V. Simakov, V. V. Kharlamov, M. Yu. Chernev

Subjects: Get full text

A Flexible Solution for TD-LTE Indoor Coverage Enhancement：Relay by Jianjun Liu, Xiaodong Shen, Zhenping Hu, Yu Qian, Zhiheng Guo

Subjects: Get full text