Suchismita Bhattacharjee

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Cognitive Radio (CR) is a technology that promises to solve the spectrum shortage problem by allowing secondary users to coexist with primary user without causing any interference to the communication. It aims to improve the utilization of the radio spectrum. Although the operational aspects of CR are being explored widely, its security aspects have gained(More)
Collaborative spectrum sensing (CSS) is an approach that enhances the spectrum sensing performance where multiple secondary users (SUs) cooperate to make the final sensing decision in a cognitive radio network (CRN). In CSS, the SUs are generally assumed to report correct local sensing result to the fusion center (FC). But, some SUs may be compromised and(More)
With the increase in use of wireless network, the initial protocols, as first, Wireless Equivalent Privacy (WEP), then Wi-Fi Protected Access (WPA) was used to secure wireless communications. In this paper, a comparison study is carried out in between Counter mode with Cipher block chaining Message authentication code Protocol (CCMP) and Temporal Key(More)
We use collaborative sensing in a cognitive radio network for a more accurate sensing decision. Individual radio nodes sends its local sensing report to the fusion center (FC), which combines the local sensing reports using some fusion rule thereby arriving at a final sensing decision. However, a malicious node may launch the Spectrum Sensing Data(More)
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