TY - CHAP AU - Arif Basgumus AU - Mustafa Namdar AU - Hakan Alakoca AU - Eylem Erdogan and Lutfiye Durak-Ata ED - Shahriar Shirvani Moghaddam Y1 - 2018-11-05 PY - 2018 T1 - Interference Alignment in Multi-Input Multi-Output Cognitive Radio-Based Network N2 - The limitation of the radio spectrum and the rapid growth of communication applications make optimal usage of radio resources essential. Cognitive radio (CR) is an attractive research area for 4G/5G wireless communication systems, which enables unlicensed users to access the spectrum. Delivering higher spectral efficiency, supporting the higher number of users, and achieving higher coverage and throughput are the main advantages of CR-based networks compared to conventional ones. The main goal of this book is to provide highlights of current research topics in the field of CR-based systems. The book consists of six chapters in three sections focusing on primary and secondary users, spectrum sensing, spectrum sharing, CR-based IoT, emulation attack, and interference alignment. BT - Cognitive Radio in 4G/5G Wireless Communication Systems SP - Ch. 6 UR - https://doi.org/10.5772/intechopen.80073 DO - 10.5772/intechopen.80073 SN - 978-1-78984-707-9 PB - IntechOpen CY - Rijeka Y2 - 2024-04-20 ER -