Low complexity power allocation and joint relay-jammer selection in cooperative jamming DF relay wireless secure networks

2013 ◽  
Author(s):  
Wanchun Liu ◽  
Dawei Tan ◽  
Guanghan Xu
Keyword(s):  
Power Allocation ◽  
Low Complexity ◽  
Cooperative Jamming ◽  
Secure Networks

scholarly journals Low-complexity beam-domain channel estimation and power allocation in hybrid architecture massive MIMO systems

2019 ◽  
Vol 2019 (1) ◽  
Author(s):  
Xiao Chen ◽  
Zaichen Zhang ◽  
Liang Wu ◽  
Jian Dang
Keyword(s):  
Channel Estimation ◽  
Power Allocation ◽  
Spectral Efficiency ◽  
Communication Systems ◽  
Mimo Systems ◽  
Beam Steering ◽  
Estimation Method ◽  
Low Complexity ◽  
Estimation Accuracy ◽  
Hybrid Architecture

Abstract In this journal, we investigate the beam-domain channel estimation and power allocation in hybrid architecture massive multiple-input and multiple-output (MIMO) communication systems. First, we propose a low-complexity channel estimation method, which utilizes the beam steering vectors achieved from the direction-of-arrival (DOA) estimation and beam gains estimated by low-overhead pilots. Based on the estimated beam information, a purely analog precoding strategy is also designed. Then, the optimal power allocation among multiple beams is derived to maximize spectral efficiency. Finally, simulation results show that the proposed schemes can achieve high channel estimation accuracy and spectral efficiency.

A low complexity power allocation scheme for NOMA-based indoor VLC systems

2020 ◽  
Vol 463 ◽  
pp. 125383
Author(s):  
Qiong Zhao ◽  
Jing Jiang ◽  
YanWen Wang ◽  
JianBo Du
Keyword(s):  
Power Allocation ◽  
Low Complexity ◽  
Allocation Scheme

scholarly journals Secure Communications With Cooperative Jamming: Optimal Power Allocation and Secrecy Outage Analysis

2017 ◽  
Vol 66 (8) ◽  
pp. 7495-7505 ◽  
Author(s):  
Kanapathippillai Cumanan ◽  
George C. Alexandropoulos ◽  
Zhiguo Ding ◽  
George K. Karagiannidis
Keyword(s):  
Power Allocation ◽  
Secure Communications ◽  
Optimal Power Allocation ◽  
Cooperative Jamming ◽  
Optimal Power ◽  
Secrecy Outage ◽  
Outage Analysis

A low-complexity port selection and power allocation scheme in distribution MIMO systems

2010 ◽  
Vol 27 (2) ◽  
pp. 145-150 ◽  
Author(s):  
Ningbo Zhang ◽  
Guixia Kang ◽  
Yanyan Guo ◽  
Ping Zhang
Keyword(s):  
Power Allocation ◽  
Mimo Systems ◽  
Low Complexity ◽  
Allocation Scheme ◽  
Port Selection
Sign in / Sign up

Export Citation Format

Share Document