Multi-Way MIMO Amplify-and-Forward Relay Networks with Zero-Forcing Transmission

2013 ◽  
Vol 61 (12) ◽  
pp. 4847-4863 ◽  
Author(s):  
Gayan Amarasuriya ◽  
Chintha Tellambura ◽  
Masoud Ardakani
Keyword(s):  
Relay Networks ◽  
Amplify And Forward ◽  
Zero Forcing

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

Average Fade Duration for Amplify-and-Forward Relay Networks in Fading Channels

2015 ◽  
Vol 14 (10) ◽  
pp. 5454-5467 ◽  
Author(s):  
F. Javier Lopez-Martinez ◽  
Ernest Kurniawan ◽  
Russ Islam ◽  
Andrea Goldsmith
Keyword(s):  
Fading Channels ◽  
Relay Networks ◽  
Amplify And Forward ◽  
Average Fade Duration

scholarly journals Secure Multiuser Communications in Multiple Amplify-and-Forward Relay Networks

2014 ◽  
Vol 62 (9) ◽  
pp. 3299-3310 ◽  
Author(s):  
Lisheng Fan ◽  
Xianfu Lei ◽  
Trung Q. Duong ◽  
Maged Elkashlan ◽  
George K. Karagiannidis
Keyword(s):  
Relay Networks ◽  
Amplify And Forward ◽  
Multiuser Communications

Zero Forcing in General Two-Hop Relay Networks

2010 ◽  
Vol 59 (1) ◽  
pp. 191-202 ◽  
Author(s):  
Raymond H. Y. Louie ◽  
Yonghui Li ◽  
Branka Vucetic
Keyword(s):  
Relay Networks ◽  
Zero Forcing

scholarly journals Energy-Efficient Dual-Iteration Power Allocation for Two-Phase Relay System with Massive Antennas

2014 ◽  
Vol 2014 ◽  
pp. 1-8
Author(s):  
Long Zhao ◽  
Wei Xiang ◽  
Jie Mei ◽  
Hui Zhao ◽  
Hang Long ◽  
...  
Keyword(s):  
Power Allocation ◽  
Relay Node ◽  
Spectrum Efficiency ◽  
Amplify And Forward ◽  
Zero Forcing ◽  
Channel State ◽  
Relay System ◽  
Two Phase ◽  
Massive Antennas ◽  
Equal Power Allocation

This paper considers the scenario where multiple source nodes communicate with multiple destination nodes simultaneously with the aid of an amplify-and-forward relay equipped with massive antennas. In order to achieve optimal energy efficiency (EE) of the entire relay system, this paper investigates the power allocation problem for the multiple pairs of nodes at both the source nodes and the relay node, where the relay employs the backward and forward zero-forcing filters. Since the EE optimization problem cannot be solved analytically, we propose a two-phase power allocation method. Given power allocation of one phase, the optimal power allocation is derived for the other phase. Furthermore, two dual-iteration power allocation (DIPA) algorithms with performance approaching that of optimal EE are developed based on the instantaneous and statistic channel state information, respectively. Numerical results show that the proposed DIPA algorithms can greatly improve EE while guaranteeing spectrum efficiency (SE) when compared with the equal power allocation algorithm. Moreover, both algorithms suggest that deploying a rational number of antennas at the relay node and multiplexing a reasonable number of node pairs can improve on the EE and SE.

Resource allocation for two-way amplify and forward OFDM relay networks

2017 ◽  
Vol 14 (8) ◽  
pp. 76-82 ◽  
Author(s):  
Zhijun Liu ◽  
Xiaofeng Tao ◽  
Waheed ur Rehman
Keyword(s):  
Resource Allocation ◽  
Relay Networks ◽  
Amplify And Forward
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