Mobile radio communications and 5G networks : proceedings of Second MRCN 2021 This book features selected high quality papers from the second International Conference on Mobile Radio Communications and 5G Networks (MRCN 2021) held at University Institute of Engineering and Technology Kurukshetra University Kurukshetra India during 10–12 June 2021. The book features original papers by active researchers presented at the International Conference on Mobile Radio Communications and 5G Networks. It includes recent advances and upcoming technologies in the field of cellular systems 2G 2.5G 3G 4G 5G and beyond LTE WiMAX WMAN and other emerging broadband wireless networks WLAN WPAN and various home personal networking technologies pervasive and wearable computing and networking small cells and femtocell networks wireless mesh networks vehicular wireless networks cognitive radio networks and their applications wireless multimedia networks green wireless networks standardization of emerging wireless technologies power management and energy conservation techniques. Manual and Automatic Control of Appliances Based on Integration of WSN and IOT Technology Face Recognition System Based On Convolutional Neural Network (Cnn) For Criminal Identification A Novel Support Vector Machine Red Deer Optimization Algorithm For Enhancing Energy Efficiency Of Spectrum Sensing In Cognitive Radio Network Detecting Six Different Types Of Thyroid Diseases Using Deep Learning.