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Time-domain maximum-likelihood (ML) estimators of time and frequency offsets are derived for three orthogonal frequency division multiplexing (OFDM) signal models: a pulse-shaped one-shot OFDM signal, a stream of multiple OFDM signals and an OFDM signal in a dispersive channel environment. We then develop structures to simplify their implementation. Simulation results show the relative performance
Popular Abstract in Swedish Hur lär vi oss ett nytt språk och hur påverkas språkinlärningen av de språk vi kan sedan tidigare? Syftet med denna avhandling är att undersöka hur utvecklingsstadier i inlärningen av ordformer och ordföljd i ett språk påverkas av tidigare inlärda språk (s.k. transfer). Avhandlingen undersöker dels transfer av modersmålet (L1) och dels transfer av andra tidigare förvärvThe aim of this thesis is to examine how learner-general developmental stages in syntax and morphology interact with a language-specific factor, the influence of—or transfer from— the language learner’s first (L1) or previously learned second (L2) language on the acquisition of a third language (L3). It thereby aims to bring together two lines of research whose main concepts—transfer and developme
Multi-site measurements for urban macro cells at 2.66 GHz are performed with three base stations and one mobile station. In order to analyze the correlation properties of large scale parameters, we split up the routes into subsets, where it can be assumed that wide-sense stationarity (WSS) applies. The autocorrelation distance and correlation properties of large scale parameters for each link are
Analytical sociology seeks to explain complex social processes by carefully dissecting them and then bringing into focus their most important constituent components. It is through dissection and analytical abstractions that the important cogs and wheels of social processes are made visible and intelligible. By identifying some common features between Tocqueville's Democracy in America and contempo
BACKGROUND:: Few and inconclusive results have been presented regarding the influence of human T-lymphotropic virus 1 (HTLV-1) infection on the risk of acquiring tuberculosis (TB). METHODS:: In 1994-1997, we performed a prospective study on hospitalized adult patients with pulmonary TB in Guinea-Bissau and compared the clinical outcome in HIV-2 and HIV-negative patients. We determined the prevalen
MYH9-related platelet disorders are inherited macrothrombocytopenias with additional clinical manifestations including renal failure, hearing loss, pre-senile cataract, and inclusion bodies in leucocytes that are present in different combinations. The MYH9 gene codes for the cytoplasmic contractile protein non-muscular myosin heavy chain IIA, present in several tissues. The bleeding tendency is us
