This SpringerBrief presents adaptive resource allocation schemes for secondary users for dynamic spectrum access (DSA) in cognitive radio networks (CRNs) by considering Quality-of-Service requirements, admission control, power/rate control, interference constraints, and the impact of spectrum sensing or primary user interruptions. It presents the challenges, motivations, and applications of the…
This brief explores current research on dynamic spectrum auctions, focusing on fundamental auction theory, characteristics of the spectrum market, spectrum auction architecture and possible auction mechanisms. The brief explains how dynamic spectrum auctions, which enable new users to gain spectrum access and existing spectrum owners to obtain financial benefits, can greatly improve spectrum ef…
In this module, you will learn several basic concepts of communications systems such as major building blocks of a communication system, properties of electromagnetic (EM) waves, and frequency allocation in communication systems. You can quickly review the important terms used in this module in the glossary at the end of this module. As you work your way through the module, you’ll encounte…
"So you’re the one getting this gift? Lucky you! Someone who knows you has visited the museum. They searched out things they thought you would care about, and they took photos and left messages for you." This is the welcoming message for the Gift app, designed to create a very personal museum visit. Hybrid Museum Experiences use new technologies to augment, expand or alter the physical experi…
Video games have entered the cultural mainstream and in terms of economic profits they now rival established entertainment industries such as film or television. As careers in video game development become more common, so do the stories about precarious working conditions and structural inequalities within the industry. Yet, scholars have largely overlooked video game production cultures in fav…
Video games have entered the cultural mainstream and in terms of economic profits they now rival established entertainment industries such as film or television. As careers in video game development become more common, so do the stories about precarious working conditions and structural inequalities within the industry. Yet, scholars have largely overlooked video game production cultures in fav…
Democratising the museum is a collection of articles reflecting upon the problem of how participation, technologically mediated or not, can support the museum in the process of becoming more accessible. The open museum shares power with its visitors while negotiating professionalism and the role of the museum in a modern society. The book looks at the roles and struggles of audiences/visitors a…
"So you’re the one getting this gift? Lucky you! Someone who knows you has visited the museum. They searched out things they thought you would care about, and they took photos and left messages for you." This is the welcoming message for the Gift app, designed to create a very personal museum visit. Hybrid Museum Experiences use new technologies to augment, expand or alter the physical experi…
Digital media histories are part of a global network, and South Asia is a key nexus in shaping the trajectory of digital media in the twenty-first century. Digital platforms like Facebook, WhatsApp, and others are deeply embedded in the daily lives of millions of people around the world, shaping how people engage with others as kin, as citizens, and as consumers. Moving away from Anglo-American…
Video games have entered the cultural mainstream and in terms of economic profits they now rival established entertainment industries such as film or television. As careers in video game development become more common, so do the stories about precarious working conditions and structural inequalities within the industry. Yet, scholars have largely overlooked video game production cultures in fav…