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Cooperative spectrum sensing among cognitive radio nodes is needed in order to overcome fading and shadowing effects on individual cognitive user and to increase the reliability and efficiency of spectrum sensing. When communication is under bandwidth constraint, spectrum sensing sensor nodes normally only send one bit report to fusion center and censoring detection method is employed by sensor nodes...
Spectrum sensing is crucial for the success of cognitive radio because it will guarantee service improvement to unlicensed users and avoidance of interference to licensed users. However this new radio functionality will place severe sensitivity requirement on individual radio. Local decision fusion as a low complexity method can improve the detection performance by simply increasing the number of...
Cooperation between cognitive radio nodes is indispensable in order to mitigate the sensitivity requirement on individual radio and increase the reliability of spectrum sensing. Normally the fusion network is in parallel configuration and the conventional fusion rules are the k out of N rules because of their simplicity to manage. When the detection nodes are similar with each other i.e. their observations...
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