Linear dispersion codes (LDCs) are an attractive tool for attaining spatial diversity in OFDM systems with multiple transmit antennas. To reach the potential gains, in each situation, the selection of a proper set of codes depends, in general, on the existence of a reliable feedback channel. We propose LDCs for multiple-input multiple-output (MIMO) channels with a fixed amount of feedback. The ...

We introduce and analyze a new statistical ensemble of low-density parity-check convolutional (LDC) codes. The result of the analysis are bounds, such as a lower bound for the free distance and upper bounds for the burst error probability of the LDC codes.

The unit for research into reading that we set up in Liverpool is just over a year old now. It is called CRILS – the Centre for Research into Reading, Information and Linguistic Systems. Odd though perhaps it may seem at first, we came out of a department for the study of English literature and into a faculty of Health and Life Sciences, to widen our remit across disciplines and in relation to ...

This paper describes a method for finding struc-rural matching between parallel sentences of two languages, (such as Japanese and English). Parallel sentences are analyzed based on unification grammars, and structural matching is performed by making use of a similarity measure of word pairs in the two languages. Syntactic ambiguities are resolved simultaneously in the matching process. The resu...

(2) This property of discrete infinity characterizes EVERY human language; none consists of a finite set of sentences. The unchanged central goal of linguistic theory over the last fifty years has been and remains to give a precise, formal characterization of this property and then to explain how humans develop (or grow) and use discretely infinite linguistic systems. (Epstein and Hornstein 200...

We report on a study which investigated the effects of three types of feedback realized in instructional dialogues with a computer-based language learning system for German. The interaction was framed within a directions giving task and the linguistic form in focus was the dative case in prepositional phrases. The feedback types differed with respect to the focus they put on form versus meaning...

In this paper, we investigate the multiple attribute decision making (MADM) problem based on the arithmetic and geometric aggregation operators with hesitant fuzzy linguistic information. Then, motivated by the idea of traditional arithmetic operation, we have developed some aggregation operators for aggregating hesitant fuzzy linguistic information: hesitant fuzzy linguistic weighted average (...

Tasks performed: interactive InFile French to French and English Main objectives of experiments: As Hossur’Tech started from scratch in mid January to build an information extraction system based on a deep linguistic analysis, InFile runs were too early to be able to use our linguistic tools. Our objective in performing runs was to experiment comparison methods on real data to help us to design...

Abstract This article shows, through the analysis of “real life” institutional interaction, how experienced teachers and supervisors negotiate face when contest or manage supervisors’ critical account requests during post observation feedback meetings. A linguistic micro-analysis data extracts is supplemented with ethnographic drawn from participant perspective interviews researcher knowledge. ...

The aim of our research is the improvement of Boolean search with query expansion using lexical ontologies and user feedback. User studies strongly suggest that standard search techniques have to be improved in order to meet legal particularities. Query expansion can exploit the potential of linguistic knowledge and successful user behaviour. First tentative results show the feasibility of our ...