Mutual Coupling Reduction Using Improved Dual-Layer Mushroom and E-Shaped Stub by Chunxia Cheng, Liyan Luo

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Game-based resource allocation in heterogeneous downlink CR-NOMA network without subchannel sharing by Deepa Das, Rajendra Kumar Khadanga, Deepak Kumar Rout, Md. Minarul Islam, Taha Selim Ustun

“…This paper explores how to manage resources in a two-tier, diverse cognitive radio network using a sophisticated technique called non-orthogonal multiple access. …”
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Implementation of an Optical-Wireless Network with Spectrum Sensing and Dynamic Resource Allocation Using Optically Controlled Reconfigurable Antennas by E. Raimundo-Neto, J. R. G. da Rosa, M. A. F. Casaroli, I. Feliciano da Costa, A. M. Alberti, Arismar Cerqueira Sodré

“…This work proposes the concept and reports the implementation of an adaptive and cognitive radio over fiber architecture. It is aimed at dealing with the new demands for convergent networks by means of simultaneously providing the functionalities of multiband radiofrequency spectrum sensing, dynamic resource allocation, and centralized processing capability, as well as the use of optically controlled reconfigurable antennas and radio over fiber technology. …”
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Automatic Optical Path Alignment Method for Optical Biological Microscope by Guojin Peng, Zhenming Yu, Xinjian Zhou, Guangyao Pang, Kuikui Wang

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Ranging Method for Navigation Based on High-Speed Frequency-Hopping Signal by En Yuan, Wangdong Qi, Peng Liu, Li Wei, Longliang Chen

“…Building APNT system with the cognitive radio and frequency-hopping (FH) techniques can resolve above problem, however, the main challenge is to achieve a long and high-precision range with high-speed FH signals. …”
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Spatial Transmission Optimization for Secondary Users in Next-Gen Directional Networks by Zeinab Kteish, Jad Abou Chaaya, Abbass Nasser, Koffi-Clement Yao, Ali Mansour

“…Concurrent transmission of the opportunistic Secondary User (SU) and the licensed Primary User (PU) is a promising approach to increasing secondary network capacity in Cognitive Radio (CR) networks. In future telecommunication generations, PU can be expected to adopt directional transmission. …”
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Analysis of the Consecutive Mean Excision Algorithms by Johanna Vartiainen, Janne Lehtomäki, Harri Saarnisaari, Markku Juntti

“…Since they are computationally simple, they have applications for both narrowband signal detection in cognitive radios and interference suppression. In this paper, a theoretical performance analysis framework of the CME algorithms is presented. …”
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Backpropagation-Based Cooperative Localization of Primary User for Avoiding Hidden-Node Problem in Cognitive Networks by Lin Liu, Zhengyi Li, Chi Zhou

“…Cognitive radio (CR) is a technology to implement opportunistic spectrum sharing to improve the spectrum utilization. …”
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An Overview and State of The Art in Reconfigurable Antennas with Their Applications by El Aoud Salah Eddine, Abbaoui Hind, Attioui Sanae, El Assri Nasima, Ibnyaich Saida, Zeroual Abdelouhab

“…This adaptability is essential in addressing the increasing demands of next-generation communication systems, including 5G/6G networks, cognitive radios, and the Internet of Things (IoT). By integrating technologies like PIN diodes, MEMS, and tunable materials, reconfigurable antennas can adjust to varying environmental and operational conditions, providing enhanced performance in terms of bandwidth, efficiency, and interference mitigation. …”
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