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Secondary transmission power of cognitive radios for dynamic spectrum access

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3 Author(s)
Li, Xiaohua ; Dept. of ECE, State Univ. of New York at Binghamton, Binghamton, NY ; Jinying Chen ; Juite Hwu

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.

Published in:
Communications and Networking in China, 2008. ChinaCom 2008. Third International Conference on

Date of Conference: 25-27 Aug. 2008

Page(s):
1211 - 1215
E-ISBN :
978-1-4244-2374-3
Print ISBN:
978-1-4244-2373-6
INSPEC Accession Number:
10397901
Conference Location :
Hangzhou
Digital Object Identifier :
10.1109/CHINACOM.2008.4685244

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