Performance limits of energy harvesting communications under imperfect channel state information

2016 ◽  
Author(s):  
Mohamed Ridha Zenaidi ◽  
Zouheir Rezki ◽  
Hamidou Tembine ◽  
Mohamed-Slim Alouini
Keyword(s):  
Energy Harvesting ◽  
Channel State Information ◽  
Performance Limits ◽  
Imperfect Channel State Information ◽  
Channel State ◽  
State Information

Multicast Beamforming for SWIPT in MISO Full-Duplex Systems

2021 ◽  
Vol 16 (1) ◽  
pp. 26-33
Author(s):  
Alexander Akpofure Okandeji
Keyword(s):  
Energy Harvesting ◽  
Channel State Information ◽  
Base Station ◽  
Semidefinite Relaxation ◽  
Full Duplex ◽  
Power Splitting ◽  
Power Transfer ◽  
Imperfect Channel State Information ◽  
Channel State ◽  
State Information

This paper considers the multicast transmit beamforming and receive power splitting problem for sum transmit power minimization for a simultaneous wireless information and power transfer (SWIPT) system subject to signal-to-interference-plus-noise ratio (SINR), and energy harvesting constraints at the receiver. In particular, we consider the case of perfect and imperfect channel state information (CSI) at the base station. Using semidefinite relaxation (SDR) technique, we obtain solution to the problem with imperfect channel state information of the self-interfering channels. Keywords: Simultaneous wireless information and power transfer, channel state information, Energy harvesting, semidefinite relaxation.

scholarly journals On the Performance of Energy Harvesting Non-Orthogonal Multiple Access Relaying System with Imperfect Channel State Information over Rayleigh Fading Channels

Sensors ◽  
2019 ◽  
Vol 19 (15) ◽  
pp. 3327 ◽  
Author(s):  
Tran Manh Hoang ◽  
Nguyen Le Van ◽  
Ba Cao Nguyen ◽  
Le The Dung
Keyword(s):  
Energy Harvesting ◽  
Fading Channels ◽  
Channel State Information ◽  
Multiple Access ◽  
Rayleigh Fading ◽  
Imperfect Channel State Information ◽  
Amplify And Forward ◽  
Channel State ◽  
State Information ◽  
Relaying System

In this paper, we propose a non-orthogonal multiple access (NOMA) relaying system, where a source node communicates simultaneously with multiple users via the assistance of the best amplify-and-forward (AF) relay. The best relay is selected among N relays which are capable of harvesting the energy from radio frequency (RF) signals. We analyze the performance of the proposed NOMA relaying system in the conditions of imperfect channel state information (CSI) and Rayleigh fading by deriving the exact expressions of the outage probability (OP) and the approximate expression of the ergodic capacities of each user and the whole system. We also determine the optimal energy harvesting duration which minimizes the OP. Numerical results show that, for the same parameter settings, the performance of the proposed NOMA relaying system, especially the ergodic capacity of the whole system, outperforms that of the orthogonal-multiple-access (OMA) relaying system. Monte-Carlo simulations are used to validate the correctness of the analytical results.

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