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Cooperation can improve the performance of spectrum sensing by taking advantage of diversity gains. However, in the process of cooperative spectrum sensing, malicious users could send false local sensing results to the fusion center, which can cause severe distortion to the final sensing decision. To improve the immunity of cooperative spectrum sensing against false sensing information, we propose...
Spectrum sensing is an important component of cognitive radio technology. Cooperative spectrum sensing is regarded as the most promising method to improve the reliability of spectrum sensing. However, such cooperation also introduces overhead traffic of control signaling and result transmission which consumes more power in battery operated mobile terminals. In this paper, an RLECSS (run-length encoding...
Cooperation can improve the performance of spectrum sensing. However, the sensing overhead is generally increasing with the number of cooperating users as more data needs to be reported to the fusion center. Most existing works assume a general time frame structure in which spectrum observing and sensing results reporting are conducted sequentially. We argue that this frame structure is inefficient,...
Spectrum sensing is important for cognitive radios to utilize the idle spectrum opportunities, and recently cooperation schemes have been introduced to enhance spectrum sensing in specific areas. However, when a mobile cognitive node roams among heterogenous wireless network, it will be difficult to catch the changes of primary user's behavior, or to setup the cooperation relationship with local network...
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