universitat pompeu fabra

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A WiMAX-Based Implementation of Network MIMO for Indoor Wireless Systems

It is well known that Multiple-Input Multiple-Output MIMO techniques can bring numerous benefits, such as higher spectral efficiency, to point-to-point wireless links. More recently, there has been interest in extending MIMO concepts to multiuser wireless systems. The focus in this paper is on network MIMO, a family of techniques whereby...

Tags: Network, WiMAX, MIMO, Wireless, Universitat Pompeu Fabra, Wi-Fi, Wireless And Mobility

White papers 2009-07-01

An Analysis of MIMO Techniques for Mobile WiMAX Systems

Multiple Input Multiple Output MIMO techniques are an essential part of the IEEE 802.16e - 2005 specifications, which form the basis of mobile WiMAX systems. This paper discusses the basic tradeoffs between diversity, interference cancellation and spatial multiplexing in MIMO systems, and the authors compare Optimum Combining OC, Maximum-Ratio combining...

Tags: Mobile, Specification, MIMO, IEEE, Analysis, Universitat Pompeu Fabra, Multiple Input Multiple Output Technique, WiMAX, Wi-Fi, Wireless And Mobility

White papers 2008-03-11

CsoundXML: A Meta-Language in XML for Sound Synthesis

The software sound synthesis is closely related to the Music N programs started with Music I in 1957. Although Music N has many advantages such as unit generators and a flexible score language, it presents a few problems like limitations on instrument reuse, inflexibility of use of parameters, lack of...

Tags: Synthesis, Universitat Pompeu Fabra, XML, Productivity, Tools & Techniques, Software/Web Development, Web Development, Management

White papers 2008-01-01

A QTI Management System for Service Oriented Architectures

The IMS Question & Test Interoperability specification describes a data model for the representation of questions and tests data and their corresponding results reports. This paper discusses a more elaborated implementation of a module-structured online engine for the QTI specification, aiming at providing a framework for the development of user...

Tags: Specification, SOA, Universitat Pompeu Fabra, Service-Oriented Architecture (SOA), Web Services, Enterprise Software, Software

White papers 2006-12-12