Erscheinungsdatum: 28.02.2018, Medium: Taschenbuch, Einband: Kartoniert / Broschiert, Titel: Allocation de Ressources Radios Pour Les Services Paquets 3g, Autor: Enderle-N, Verlag: ED UNIVERSITAIRES EUROPEENNES, Imprint: Omn.Univ.Europ., Sprache: Französisch, Schlagworte: COMPUTERS // Communications // Networking // General // LITERARY CRITICISM // Literatur: Geschichte und Kritik, Rubrik: Datenkommunikation // Netze, Mailboxen, Seiten: 184, Reihe: Omn.Univ.Europ, Gewicht: 292 gr, Verkäufer: averdo
Erscheinungsdatum: 23.06.2013, Medium: Taschenbuch, Einband: Kartoniert / Broschiert, Titel: Adaptive FLS for Bandwidth Analysis & Allocation for Cognitive Radios, Titelzusatz: A Novel Approach of Spectrum Management, Autor: Sherwani, Nazia // Khan, M. Saleem, Verlag: LAP Lambert Academic Publishing, Sprache: Englisch, Schlagworte: Computernetzwerke und maschinelle Kommunikation, Rubrik: Datenkommunikation // Netze, Mailboxen, Seiten: 116, Informationen: Paperback, Gewicht: 189 gr, Verkäufer: averdo
Adaptive FLS for Bandwidth Analysis & Allocation for Cognitive Radios ab 49.99 € als Taschenbuch: A Novel Approach of Spectrum Management. Aus dem Bereich: Bücher, English, International, Gebundene Ausgaben,
Cognitive radio has been found to be the technology to satisfy the huge demand for applications of high data rates that increase the number of users in wireless networks. Cognitive radio is a very interdisciplinary topic as it includes dynamic spectrum access and policies, flexible system architectures, learning, context awareness and cooperative networking. However, most of the current cognitive radio work targets spectrum sensing and spectrum allocation without considering the impact of optimization on the performance of the network. Mitola's vision intended to build context-sensitive smart radios that are able to adapt to the wireless environment conditions while maintaining quality of service support for different applications. In this book, we study cognitive radio from a system point of view focusing closely on architectures, techniques and algorithms that can enable intelligent operations for spectrum allocation and radio reconfiguration optimization. A modular cognitive resource management framework is investigated, which facilitate a development of flexible control and optimization techniques for resources management in wireless networks on diverse radio environments.
This study found that only some people have access to HIV/AIDS related health information. Access to HIV/AIDS related information is limited for some participants who identified language, lack of interest, alcohol abuse, time allocation as some of the barriers. Most reading materials are either written in English or Afrikaans which made it impossible for most of PLWHA to understand it. Those who understand those languages do not share it with others because of stigma.Recommendations were formulated. Problems such as the language issue need to be looked at by all stakeholders who are responsible for preparing information materials. More programmes on HIV/AIDS are needed on radios and NBC television in local languages. Stigma and discrimination need to be addressed seriously from all levels of society. This will enable PLWHA to live positively. Poverty was also identified as a barrier to living positively with HIV/AIDS. It is, therefore, recommended that specific programmes/projects need to be developed to reduce poverty among PLWHA. Approaches to enable men to participate in HIV/AIDS issues should be developed and strengthened.
Multicarrier communication methods such as Orthogonal Frequency Division Multiplexing (OFDM) and Filter Bank Multicarrier (FBMC) permit the implementation of dynamic spectrum access thanks to their ability to finely control signal transmission over specific frequency subbands. Therefore, multicarrier methods are strong candidates for the physical layer of spectrum sharing applications and cognitive radios. This dissertation explores methods for spectrum awareness and opportunistic access of multicarrier radios based on the allocation of subcarriers in blank spectral spaces. Following a theoretical description, a physical layer hardware design based on FPGA is presented, including the description of a working prototype with solutions to the tasks of spectrum sensing, frame detection, synchronization, channel estimation, demodulation, and mutual interference mitigation.
Cognitive radio (CR) is a kind of wireless communication wherein a transceiver can intelligently sense the vacant and occupied communication channels and promptly move into vacant channels while staving off occupied ones. This enables the optimum use of available Radio-Frequency (RF) spectrum whereas avoiding the interference to other users. Cognitive radio is a key technology that came up with the solution of the problem of underutilization of radio frequency. To explore the capabilities and benefits of CR in better way, researchers now a days are interested in adaptive control paradigms such as fuzzy logic, artificial neural networks, neuro-fuzzy approach etc. The work presented in this book mainly composed of the analysis of available frequency and its allocation to the Secondary Users (SUs) / CRs by using fuzzy logic. A new approach of Spectrum management is introduced in it by resolving the issue regarding the allocation of bandwidth to the appropriate secondary user or the cognitive radio which can use the frequency band for its transmission.