Introduction

Rashid A. Saeed and Stephen J. Shellhammer

Overview

The need for additional spectrum to provide wireless services has been growing at an accelerating pace. Smartphone use has exploded, and meeting the demand for wireless broadband services is a challenge. One of the main issues is the scarcity of spectrum to support these wireless services. Cognitive radio (CR) is a promising new technology for enabling access to additional spectrum that is so badly needed. A number of conferences focusing on cognitive radio have emerged in the past ...

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