Browsing by Author "WU Sau-Hsuan"

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COGNITIVE RADIO COMMUNICATION SYSTEM AND OPERATING METHOD THEREOF
(2014-08-28)
WU Sau-Hsuan
;
Chao Hsi-Lu
;
Ko Chun-Hsien
;
Mo Shang-Ru
;
Jiang Chang-Ting
A cognitive radio communication network is provided. The cognitive radio communication network includes a cloud and a wireless communication network.A communication system accessing to a backbone network is provided. The communication system includes a cloud and a wireless communication network connected to the cloud, and having a plurality of cognitive radio access points and a plurality of users, wherein the cloud performs the functions of network management, power control, and radio resource management.
RADIO SYSTEM AND OPERATING METHOD OF THE SAME
(2013-10-17)
WU Sau-Hsuan
;
KO Chun-Hsien
A radio system is provided. The radio system comprises primary devices, secondary devices, cognitive radio base stations and a data fusion center. The primary devices are licensed to use communication channels. The secondary devices acquire sensing reports of received signal strength, location and channel information of the primary devices. The cognitive radio base stations receive the sensing reports generated by the secondary devices through a control channel. The data fusion center receives the sensing reports from the cognitive radio base stations through a backbone network and performs a cooperative spectrum sensing process on the sensing reports to obtain primary device information with respect to the number, spectrum distribution and coverage area of the primary devices, wherein the primary device information is accessible by the secondary devices such that the secondary devices select one of the communication channels according to the primary device information to perform communications.