Paper Abstract and Keywords |
Presentation |
2009-05-29 16:50
A study on design of weighted cooperative sensing system Hironori Tsuchiya, Kenta Umebayashi, Yukihiro Kamiya, Yasuo Suzuki (Tokyo Univ. of Agr and Tech.) SR2009-20 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
This paper presents a cooperative sensing technique for the spectrum sharing between an existing system
(primary system: PS) and a new wireless radio system (secondary system: SS) which equips the cognitive
radio techniques. To enhance the detection performance, strategies of fusion of the local statistics from individual
secondary users have been investigated. We define an effective weight, which depends on the received signal power
from PS and noise power. A usage of the weight in cooperative sensing can improve the detection performance. We
also propose the received signal power estimation method to determine the weight and analyze the statistics and
mean square error of the estimator. Additionally, we design SS’s parameters (number of samples, number of nodes,
number of antennas, and length of estimation period) in multipath fading environment. The design criterion of
each parameter is determined so that the detection performance in worst case can achieve required target detection
performance for PS. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
cognitive radio / cooperative sensing / Neyman-Pearson theorem / plural antenna elements / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 109, no. 61, SR2009-20, pp. 129-134, May 2009. |
Paper # |
SR2009-20 |
Date of Issue |
2009-05-21 (SR) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
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SR2009-20 |
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