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In cognitive radio networks, cognitive users are allowed to use the licensed portions of spectrum, as long as no harmful interference affects the primary (licensed) users. Towards achieving this goal, spectrum sensing is an essential process to determine spectrum access opportunities for the cognitive users. In wide spectrum applications, it is recommended to distribute the sensing task of the required...
This paper proposes a signal classification technique that is able to differentiate between TV signals and other secondary signals that might be using the licensed TV channels. The main contribution of this work is to combine the results of two, existing, sensing algorithms, Energy Detection Method and Correlation Based Method using a Fuzzy Inference Fusion system to decide whether the sensed signal-if...
In cognitive radio networks, dynamic spectrum access allows an unlicensed (secondary) user to use the frequency bands that are statically allocated to licensed (primary) users under condition of causing no harm to the primary transmission. For the process of the dynamic spectrum access to succeed, spectrum sensing becomes of great importance for the secondary user (SU) to capture the under-utilized...
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