Power Control Algorithm for Cognitive Users in Interference-limited System
Feng Guang-zeng · Jisuanji gongcheng · 2010
To meet the communication needs between licensed users and secondary users in cognitive radio and to ensure that the unimpaired of licensed users,combined with interference temperature model and non-cooperative game theory,a logarithmic utility power control algorithm is presented for interference-limited single-cell CDMA cognitive radio system based on SINR.The analysis and simulation results show that the proposed algorithm,compared with the SINR balancing algorithm and the Koskie-Gajic algorithm,is at the premise of guaranteeing the secondary users’ target SINR as well as the licensed users’ interference temperature constraints,can realize the secondary users’ high data speed communication with a proper increase of the secondary users’ transmitting power.