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This paper presents a prediction algorithm for OFDM radio channels in either time or frequency direction that explores the over sampling of the channel transfer function compared to the maximum Doppler shift and the maximum excess delay. The algorithm derives an autoregressive model utilized for prediction. Pre-filtering of channel estimates are concerned and the prediction approach is appraised a
Stora sociala rörelser uppträder ofta provokativt, men med syftet att göra demokratins rum större. Den senaste är den globala rättviserörelsen som föddes i Seattle 1999. Magnus Wennerhags nya bok Global rörelse är den första stora svenska undersökningen av vad den betyder. I det utdrag Arena nu publicerar visar han hur den skiljer sig från 68-rörelserna: mer politisk och mer inriktad på internatio
It is known that the compactness of mobile terminals complicates the design of multiple antennas, since coupling between the antennas increases when they are placed in proximity of one another. While it is possible to mitigate coupling between closely spaced antennas, a tradeoff in bandwidth is required. In this paper, we highlight ground plane excitation as an additional dimension to consider in
Abstract BACKGROUND: Most individuals with Helicobacter pylori infection in Western countries have no evidence of peptic ulcer disease (PUD). We therefore assessed the PiZ deficiency variant of the major plasma protease inhibitor alpha1-antitrypsin (alpha1AT) as a risk factor for PUD in H. pylori-infected individuals. METHODS: The cohort comprised 100 patients with endoscopically or surgically pr
Popular Abstract in English Marcel Duchamp (1887-1968) is an artist who has strongly influenced how art is currently understood. He aimed at broadening the concept of art and suggested that other things than paintings and sculptures could be defined as art. The thesis concerns Duchamp’s permanent installation Étant donnés: 1° La chute d’eau, 2° Le gaz d’éclairage (Given: 1. The Waterfall, 2. The IAims: To study aspects of Marcel Duchamp’s posthumous permanent installation 'Étant donnés: 1° La chute d’eau, 2° Le gaz d’éclairage…' ('Given: 1. The Waterfall, 2. The Illuminating Gas...'). To investigate and show methods in the making as well as in the interpretation of Duchamp’s work. To perform and document minor actions as reflections on (and of) the study. To investigate relations between r
In this paper Nordic Noir, in its filmic and televisual incarnations, will be considered on its relative merits as a transnationally successful, but regionally based popular cultural expression. The inquiry will be conducted against a backdrop which briefly traces the history and some of the obstacles which historically have limited the transnational circulation of European popular culture. Conseq
There is an increasing demand on universities and university colleges to involve student nurses in research and development projects. The aim of this study was to describe different ways of involving students in research and development projects in order to gain empirical material for their own undergraduate projects and to discuss the challenges in involving students in those projects. The study
