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1. |
Record Nr. |
UNINA9910693301103321 |
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Autore |
Maest Ann S |
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Titolo |
Questa baseline and pre-mining ground-water quality investigation . 4 Historical surface-water quality for the Red River Valley, New Mexico, 1965 to 2001 [[electronic resource] /] / by Ann S. Maest, D. Kirk Nordstrom, and Sara H. LoVetere ; prepared in cooperation with the New Mexico Environment Department |
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Pubbl/distr/stampa |
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Boulder, Colo. : , : U.S. Dept. of the Interior, U.S. Geological Survey, , 2004 |
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Collana |
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Scientific investigations report ; ; 2004-5063 |
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Altri autori (Persone) |
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NordstromDarrell Kirk |
LoVetereSara H |
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Soggetti |
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Water quality - New Mexico - Red River Valley - History |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Title from title screen (viewed on Feb. 11, 2005). |
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Nota di bibliografia |
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Includes bibliographical references. |
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2. |
Record Nr. |
UNINA9910337467003321 |
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Autore |
Fernando Xavier |
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Titolo |
Cooperative Spectrum Sensing and Resource Allocation Strategies in Cognitive Radio Networks / / by Xavier Fernando, Ajmery Sultana, Sattar Hussain, Lian Zhao |
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Pubbl/distr/stampa |
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Cham : , : Springer International Publishing : , : Imprint : Springer, , 2019 |
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ISBN |
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Edizione |
[1st ed. 2019.] |
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Descrizione fisica |
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1 online resource (X, 107 p. 38 illus.) |
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Collana |
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SpringerBriefs in Electrical and Computer Engineering, , 2191-8112 |
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Disciplina |
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Soggetti |
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Electrical engineering |
Computer networks |
Communications Engineering, Networks |
Computer Communication Networks |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Nota di contenuto |
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1 Introduction -- 2 Relay-Based Cooperative Spectrum Sensing -- 3 Cluster-Based Cooperative Spectrum Sensing -- 4 Taxonomy of the Resource Allocation in CRNs -- 5 Resource Allocation in CRNs -- 6 Resource Allocation in CRNs with D2D Communication -- 7 Conclusion and Future Research Directions. |
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Sommario/riassunto |
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Cognitive radio networks (CRN) will be widely deployed in the near future, and this SpringerBrief covers some important aspects of it, as well as highlighting optimization strategies in Resource Allocation and Spectrum Sensing in CRNs. The cognitive approach in radio access is introduced in the first part of this SpringerBrief, and then next the benefits of cooperative spectrum sensing are highlighted and a framework for studying it under realistic channel conditions is described. New exact closed-form expressions for average false alarm probability and average detection probability are derived in this scenario. A novel approximation to alleviate the computational complexity of the proposed models are also discussed. Once the spectrum opportunities are identified, efficient and systematic resource allocation (RA) shall be performed. The second part of this SpringerBrief describes the taxonomy for the RA process in CRN. A comprehensive |
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overview of the optimization strategies of the CRN RA is also provided. The device-to-device (D2D) communication scenario is discussed, then as a case study and various optimization strategies for the application of the CR technology in the D2D realm is studied. The application of advanced geometric water-filling (GWF) approach in CRN D2D environment for optimum resource allocation is presented in detail. Numerical results provide more insight quantitatively. Overall, this book is suitable for a wide audience that include students, faculty and researchers in wireless communication area and professionals in the wireless service industry. |
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