The radio frequency spectrum is getting more congested day by day due to the growth of
wireless devices, applications, and the arrival of fifth generation (5G) mobile …

In this chapter, we present the state of the art of the spectrum sensing techniques for
cognitive radio networks as well and their comparisons. The rest of the chapter is organized …

A cognitive radio system has the ability to observe and learn from the environment, adapt to
the environmental conditions, and use the radio spectrum more efficiently. It allows …

In the recent developments, the spectrum sensing and detection plays a major importance in
day to day communication and it is very much essential for the user to utilize the spectrum …

With the rapid growth of internet of thing (IoT) devices, cooperative spectrum sensing (CSS)
has emerged as a promising solution to leverage the spatial diversity of multiple secondary …

To identify the user's presence by using non-cooperative detection methods in the Cognitive
Radio (CR), networks used are Energy Detection (ED), Matched Filter Detection (MFD), and …

In cognitive radio (CR), spectrum sensing is the fundamental and basic component of
wireless communication. Requirement of higher sampling is the essential need for the …

Cognitive radio (CR) is an effective technique for dealing with scarcity in spectrum resources
and enhancing overall spectrum utilization. CR attempts to enhance spectrum sensing by …

Cognitive radio (CR) enables user to dynamically access license spectrum with prior
sensing. In such system, license spectrum is accessible when it is unused by primary user …

A cognitive radio technique has the ability to learn. This system not only can observe the
surrounding environment, adapt to environmental conditions, but also efficiently use the …