… that exist in such an emerging technology. … the main principles of cognitive radio and examine
in details its operation. In Section 3, we highlight some of the challenges in cognitive radio …

… In Section IV, we review the state-of-the-art of RIS-assisted system optimization techniques
… arising challenges and the potential opportunities associated with this emerging technology. …

… It is also important as a convenient base technology for the future context-sensitive, adaptive
and learning radio units referred to as cognitive radios. SDR also poses many challenges, …

… SDR is also a modem technology and it ignores RF design issues. In particular, the RF
design of a wireless device is typically closely coupled with the underlying access technology …

… wireless systems, cognitive radio technology could serve as the foundation on which pervasive
systems that solve a myriad problems … distinct problems is complex in both technological …

… As a consequence, the current research emphasis is directed on wireless technologies and
configurations suitable for integration on a single silicon chip [5–10]. In order to reach (or at …

… problems for 4G and 5G are added. • Thorough coverage of foundational wireless technologies,
including wireless … 4G, 5G, fixed wireless access, and mobile satellite communications. …

… research centers and industry forums such as the Software-Defined Radio Forum and Wireless
World Research Forum (WWRF). This book introduces the technologies to evolve SDR to …

… in detail the various digital radio technologies as they have developed to date. However,
a basic outline of the underlying principles of such technologies will help in providing an …

… technological advancements based on the underlying principles and characteristics of
wideband radio signals; a comprehensive account of the historical developments and principles …