Distributed power control in fading channel

2002 ◽  
Vol 38 (13) ◽  
pp. 653 ◽  
Author(s):  
G. Lee ◽  
S.-C. Park
Keyword(s):  
Power Control ◽  
Fading Channel ◽  
Distributed Power ◽  
Distributed Power Control

scholarly journals Distributed Power Control Algorithm in Orthogonal Frequency Division Multiple Cognitive Radio Systems for Fading Channel

2018 ◽  
Vol 14 (03) ◽  
pp. 107
Author(s):  
Lingling Chen ◽  
Feng Qi ◽  
Xingquan Gao ◽  
Huipeng Wang ◽  
Jiwen Liang
Keyword(s):  
Cognitive Radio ◽  
Power Control ◽  
Fading Channel ◽  
Control Algorithm ◽  
Optimization Theory ◽  
Programming Algorithm ◽  
Secondary Users ◽  
Distributed Power ◽  
Distributed Power Control ◽  
Power Control Algorithm

<p>In order to guarantee the quality of service (QoS) for primary users (PUs) and secondary users (SUs) in fading channel, a distributed power control algorithm is proposed based on convex optimization theory in underlay OFDM cognitive radio networks (CRNs). Our purpose obtains the maximum transmit data rate of each SU at all subcarriers under three constraints of the maximum allowable transmission power, the minimum signal to interference plus ratio (SINR) of each SU and the maximum allowable interference generated from SUs to PU at each subcarrier. Simulation results show that the performance of the proposed algorithms (m2) are superior to the geometric programming algorithm (m1) in fading channel environment.</p>

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