Title :
Secondary transmission power of cognitive radios for dynamic spectrum access
Author :
Li, Xiaohua ; Chen, Jinying ; Hwu, Juite
Author_Institution :
Dept. of ECE, State Univ. of New York at Binghamton, Binghamton, NY
Abstract :
In this paper, we analyze the allowable transmission power of cognitive radios when used as secondary users in a dynamic spectrum access network. Closed-form upper and lower bounds are derived, while accurate solutions to transmission power are available through numerical evaluation. The transmission power depends on the distance between primary and secondary transmitters as well as the number of randomly distributed primary receivers. The results show that at the cost of a small SINR redundancy of primary users, cognitive radios can use a significant level of transmission power in certain conditions.
Keywords :
cognitive radio; radio access networks; redundancy; SINR redundancy; cognitive radios; dynamic spectrum access; secondary transmission power; Base stations; Cognitive radio; Degradation; Educational institutions; Information analysis; Interference; Power engineering and energy; Power system modeling; Radio transmitters; Signal to noise ratio; cognitive radio; dynamic spectrum access; signal to interference and noise ratio (SINR); transmission power;
Conference_Titel :
Communications and Networking in China, 2008. ChinaCom 2008. Third International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-2373-6
Electronic_ISBN :
978-1-4244-2374-3
DOI :
10.1109/CHINACOM.2008.4685244
