Estimation for amplify-and-forward transmissions with nonlinear amplifiers

2013 ◽  
Author(s):  
R. Santucci ◽  
M.K. Banavar ◽  
C. Tepedelenlioglu ◽  
A. Spanias
Keyword(s):  
Amplify And Forward ◽  
Nonlinear Amplifiers

Sum-Rate Optimization Constrained by Consumed Power for Multi- Antenna Non-Regenerative Relay Network

2020 ◽  
Vol 10 (2) ◽  
pp. 143-152 ◽  
Author(s):  
Maryam Alibeigi ◽  
Shahriar S. Moghaddam
Keyword(s):  
Relay Network ◽  
Minimization Algorithm ◽  
Amplify And Forward ◽  
Relay Nodes ◽  
Convex Problem ◽  
Semidefinite Programming Problem ◽  
Total Leakage ◽  
Sum Rate ◽  
Rate Optimization ◽  
Novel Algorithm

Background & Objective: This paper considers a multi-pair wireless network, which communicates peer-to-peer using some multi-antenna amplify-and-forward relays. Maximizing the throughput supposing that the total relay nodes’ power consumption is constrained, is the main objective of this investigation. We prove that finding the beamforming matrix is not a convex problem. Methods: Therefore, by using a semidefinite relaxation technique we find a semidefinite programming problem. Moreover, we propose a novel algorithm for maximizing the total signal to the total leakage ratio. Numerical analyses show the effectiveness of the proposed algorithm which offers higher throughput compared to the existing total leakage minimization algorithm, with much less complexity. Results and Conclusion: Furthermore, the effect of different parameters such as, the number of relays, the number of antennas in each relay, the number of transmitter/receiver pairs and uplink and downlink channel gains are investigated.

ABEP of amplify-and-forward cooperation in Nakagami-m fading channels with arbitrary m

2009 ◽  
Vol 8 (9) ◽  
pp. 4445-4449 ◽  
Author(s):  
Jing Zhang ◽  
Taiyi Zhang ◽  
Jianxiong Huang ◽  
Runping Yuan
Keyword(s):  
Fading Channels ◽  
Amplify And Forward

scholarly journals Reliable Over-the-Air Computation by Amplify-and-Forward Based Relay

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Suhua TANG ◽  
Huarui YIN ◽  
Chao ZHANG ◽  
Sadao OBANA
Keyword(s):  
Amplify And Forward

scholarly journals On Maximum of Energy-Efficiency in Amplify-and-Forward Relay Networks Under Channel Estimation Errors

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 149641-149648
Author(s):  
Mengmeng Xu ◽  
Fei Liu ◽  
Hengzhou Xu ◽  
Hai Zhu ◽  
Baofeng Wang
Keyword(s):  
Energy Efficiency ◽  
Channel Estimation ◽  
Relay Networks ◽  
Amplify And Forward ◽  
Estimation Errors ◽  
Channel Estimation Errors
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