Cognitive network

About: Cognitive network is a research topic. Over the lifetime, 4213 publications have been published within this topic receiving 107093 citations.

Network economics in cognitive networks

Abstract: Cellular networks are confronted with unprecedented pressure to accommodate the dramatically increasing demands of mobile Internet. This phenomenon is principally due to the restricted spectrum resource and low-efficiency spectrum management. Recently, cognitive radio technology has been corroborated to significantly improve spectrum utilization efficiency. In order to enhance the spectrum management efficiency in cellular networks, the concept of “cognitive cellular networks” was introduced. It has been realized that the network architecture, algorithms, and protocols cannot be simply designed without considering the socio-economic aspects involved. In this article, we consider the economic issues in cognitive cellular networks from the perspectives of game theoretic modeling and mechanism design. Specifically, both the simultaneous and sequential dynamic spectrum access games are investigated, respectively. The mechanism design related issues (i.e., spectrum auction, pricing, and contract) to ensure desired outcomes are introduced with detailed applications in cognitive cellular networks. The goal of this article is to provide an overview to understand the motivation, problem formulation, methodology, and solutions of the economic issues in cognitive cellular networks.

Cognitive Decompiosition of Wirless Networks

Abstract: In this paper, we provide a framework for a fundamental study of the communication limits of networks of cognitive devices. It is shown that all communication in a network of cognitive and non-cognitive devices can be cast into competitive, cognitive and cooperative behaviors. An achievable rate region for the cognitive radio channnel (which captures the most fundamental form of cognition - vertical spectrum sharing), is presented.

Cognitive Radio Communications and Networks: Principles and Practice

Abstract: Cognitive Radio Communications And Networks Principles And Practice *FREE* cognitive radio communications and networks principles and practice Welcome to the ITU: Maintenance alert: We regret that we are unable to provide full access to our web services right now. We are doing some maintenance on our site and are working hard to resume full services. Thank you for your patience.ITU Committed to Connecting the World Welcome to the ITU Maintenance alert We regret that we are unable to provide full access to our web services right now We are doing some maintenance on our site and are working hard to resume full services Thank you for your patience Bureau of Transportation Statistics BUREAU OF TRANSPORTATION STATISTICS U S Department of Transportation 1200 New Jersey Avenue SE Washington DC 20590 800 853 1351 Phone Hours 8 30 5 00 ET M F Mark Turner Publications The Artful Mind Cognitive Science and the Riddle of Human Creativity 2006 Edited by Mark Turner With an introduction and a chapter by Mark Turner Spectrum management Wikipedia Spectrum management is the process of regulating the use of radio frequencies to promote efficient use and gain a net social benefit The term radio spectrum typically refers to the full frequency range from 3 kHz to 300 GHz that may be used for wireless communication Increasing demand for services such as mobile telephones and many others has required changes in the philosophy of spectrum BibMe Free Bibliography amp Citation Maker MLA APA BibMe Free Bibliography amp Citation Maker MLA APA Chicago Harvard Marketing communications Wikipedia Marketing communications MC marcom s marcomm s uses different marketing channels and tools in combination Marketing communication channels focus on any way a business communicates a message to its desired market or the market in general A marketing communication tool can be anything from advertising personal selling direct marketing sponsorship communication and promotion to Employee Organizational Communications Institute for Dr Berger’s article outlines the subject of employee organizational communication describing its importance and basic internal communication processes networks and channels Federal Register Information and Communication We the Architectural and Transportation Barriers Compliance Board Access Board or Board are revising and updating in a single rulemaking our standards for electronic and information technology developed procured maintained or used by Federal agencies covered by section 508 of the Cyber security in the Smart Grid Survey and challenges Table 1 summarizes the fundamental differences between the Smart Grid communication network and the Internet From Table 1 we can see that although the Internet offers a paradigm for the design of large scale communication network infrastructures the design of communication networks for the Smart Grid still needs to be revisited comprehensively to ensure efficient robust and secure Recommended Reading List for Developers Intel Recommended Reading List for Developers 1 st Half 2014 The Recommended Reading List is a valuable resource for technical professionals who want to thoroughly explore topics such as multi core Resolve a DOI Name Type or paste a DOI name into the text box Click Go Your browser will take you to a Web page URL associated with that DOI name Send questions or comments to doi BSc Hons Computing and IT Communications and Networking In this specialist route through our BSc Hons Computing and IT Q62 you’ll gain an understanding of the fundamental principles of communications technologies You’ll

Efficient Resource Allocation for Multicell Heterogeneous Cognitive Networks With Varying Spectrum Availability

Abstract: This paper investigates the problem of designing an efficient spectrum-allocation mechanism in heterogeneous multicell coordinated cognitive radio networks (CRNs) under time-varying channel availabilities and traffic demands across the different cells. The problem is modeled as a utility proportional fair maximization problem subject to traffic demand, spectrum heterogeneity, and exclusive spectrum sharing constraints. Specifically, the optimization problem is formulated as a binary linear programming (BLP) problem. Due to its integrality properties, the BLP is anticipated to be NP-hard. However, this paper proves that the optimal solution of the formulated BLP can be found in polynomial time using linear programming (LP) because of its total unimodular constraint matrix. The proposed solution is a spectrum-aware allocation design that ensures a fair spectrum sharing among cells based on their current traffic loads while considering the unique characteristics of their radio-frequency (RF) environment. Simulation results reveal that the proposed spectrum-aware proportional weighted fair allocation leads to improved system performance while effectively dealing with spectrum heterogeneity and time-varying traffic demands. The results also indicate that the proposed spectrum-allocation design is quite robust to traffic estimation and spectrum sensing errors.

Effective Monitoring of Freeloading User in the Presence of Active User in Cognitive Radio Networks

Abstract: In cognitive networks, primary and secondary users (PUs and SUs) share the radio resource according to fair regulations. The goal of this paper is to introduce a new method to detect an unfair user (freeloader) that hides its radio signal under the noise floor in the presence of an active (either primary or secondary) user. The performance of the proposed technique is evaluated by theoretical analysis and computer simulations. The probability of detection is expressed, for constant false-alarm rates, as a function of both the active signal power and the background noise variance. The results show the effectiveness of the new monitoring algorithm in several operating cases.