نتایج جستجو برای: dsss

تعداد نتایج: 513  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - پژوهشکده برق و کامپیوتر 1393

طراحی یک سیستم مخابراتی با احتمال شنود پایین ،(lpi) بالاخص در محیط های نظامی از اهمیت ویژه ای برخوردار است، که بدین منظور اغلب از سیستم های طیف گسترده ی دنباله مستقیم (dsss) استفاده می شود. در سال های اخیر استفاده از کدهای گسترش دهنده ی آشوبناک به علت ویژگی هایی چون غیرباینری و غیرپریودیک بودن، جهت بالا رفتن امنیت و ویژگی lpi در سیستم های dsss بسیار مورد توجه قرار گرفته است.در این پایان نامه ...

Journal: :Science of The Total Environment 2022

Authorities around the world have committed to limiting use of chemical pesticides by reducing doses, among other strategies. Nevertheless, different dose expression models and decision support systems (DSSs) for adjustment coexist high growing crops (3D crops). Among them, leaf wall area (LWA) tree row volume (TRV) recently been proposed European Mediterranean Plant Protection Organization (EP...

2000
Joseph BOUTROS

A new joint detection method based on sphere packing lattice decoding is presented. The algorithm is suitable for both synchronous and asynchronous multiple access CDMA-DSSS systems, and it may jointly detect up to 32 users with a reasonable complexity. The detection complexity is independent of the modulation size and large M-PAM or M-QAM constellations can be used. Further, a theoretical gain...

2003
ALESSANDRA ORSONI AGOSTINO G. BRUZZONE ROBERTO REVETRIA

The paper proposes a general framework for web-based distributed simulation using High Level Architecture (HLA). Alternative approaches are examined and compared in the context of Supply Chain Management, where effective Decision Support Systems (DSSs) are needed to improve collaboration among stakeholders and increase overall competitiveness. An industrial application is presented to illustrat...

2013
JOSÉ VALERIO

Large-Scale Distributed Storage Systems (LS-DSSs) are at the core of several Cloud services. These externalized services may run atop multiple administrative domains. While a client may trust the organization that provides a given Web service, a single server may belong to another organization that the client does not trust. The design of a Distributed Storage System is itself a challenging tas...

2009
Christina Pöpper Mario Strasser Srdjan Capkun

Jamming-resistant broadcast communication is crucial for safety-critical applications such as emergency alert broadcasts or the dissemination of navigation signals in adversarial settings. These applications share the need for guaranteed authenticity and availability of messages which are broadcasted by base stations to a large and unknown number of (potentially untrusted) receivers. Common tec...

2014
Marco Iannaccone Massimo Esposito

In the last decades, clinical evidence and expert consensus have been encoded into advanced Decision Support Systems (DSSs) in order to promote a better integration into the clinical workflow and facilitate the automatic provision of patient specific advice at the time and place where decisions are made. However, clinical knowledge, typically expressed as unstructured and free text guidelines, ...

Journal: :IEEE Trans. Knowl. Data Eng. 1997
Soumitra Dutta Berend Wierenga Arco Dalebout

Over the past decade, case-based reasoning (CBR) has emerged as a major research area within the artificial intelligence research field due to both its widespread usage by humans and its appeal as a methodology for building intelligent systems. Conventional CBR systems have been largely designed as automated problem-solvers for producing a solution to a given problem by adapting the solution to...

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