@Article{cmc.2020.09819,
AUTHOR = {Manimekalai Thirunavukkarasu, Romera Joan Sparjan, Laxmikandan Thangavelu},
TITLE = {An Adaptive Power Allocation Scheme for Performance  Improvement of Cooperative SWIPT NOMA Wireless Networks},
JOURNAL = {Computers, Materials \& Continua},
VOLUME = {63},
YEAR = {2020},
NUMBER = {2},
PAGES = {1043--1064},
URL = {http://www.techscience.com/cmc/v63n2/38559},
ISSN = {1546-2226},
ABSTRACT = {Future wireless networks demand high spectral efficiency, energy efficiency 
and reliability. Cooperative non-orthogonal multiple access (NOMA) with simultaneous 
wireless information and power transfer (SWIPT) is considered as one of the novel 
techniques to meet this demand. In this work, an adaptive power allocation scheme called 
SWIPT based adaptive power allocation (SWIPT-APA-NOMA) is proposed for a power 
domain NOMA network. The proposed scheme considers the receiver sensitivity of the 
end users while calculating the power allocation coefficients in order to prevent wastage 
of power allocated to user in outage and by offering priority to any one of the users to use 
maximum harvested power. A detailed analysis on the bit error rate (BER) performance 
of the proposed scheme is done and closed form expression is obtained. Simulations have 
been carried out with various parameters that influence the receiver sensitivity and the 
results show that the network achieves better outage and BER performance using the 
proposed scheme. It is found that the proposed scheme leads to a ten-fold decrease in 
transmit power for the same error performance of a fixed power allocation scheme. 
Further, it offers 96.06% improvement in the capacity for a cumulative noise figure and 
fading margin of 10 dB.},
DOI = {10.32604/cmc.2020.09819}
}