5,144 research outputs found

    A comparative study of two blind FIR equalizers

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    The paper investigates blind finite-impulse-response (FIR) equalization schemes for quadrature amplitude modulation (QAM) signalling. We compare a bootstrap maximum a posteriori probability (MAP) equalizer with a recently introduced concurrent constant modulus algorithm (CMA) and decision directed (DD) equalizer (CMA+DD). Both equalizers are known to outperform the CMA considerably. The concurrent CMA+DD equalizer has a complexity that is slightly more than twice of the CMA, and the bootstrap MAP equalizer has computational requirements that are only slightly more complex than the CMA. Simulation results indicate that the bootstrap MAP blind FIR equalizer has a faster convergence rate than the concurrent CMA+DD blind FIR equalizer, but tuning of the former is more complicated than the latter

    Operations research in consumer finance: challenges for operational research

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    Consumer finance has become one of the most important areas of banking both because of the amount of money being lent and the impact of such credit on the global economy and the realisation that the credit crunch of 2008 was partly due to incorrect modelling of the risks in such lending. This paper reviews the development of credit scoring,-the way of assessing risk in consumer finance- and what is meant by a credit score. It then outlines ten challenges for Operational Research to support modelling in consumer finance. Some of these are to developing more robust risk assessment systems while others are to expand the use of such modelling to deal with the current objectives of lenders and the new decisions they have to make in consumer financ

    Structural Geology of the Cariboo Gold Mining District, East-Central British Columbia:

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    L.C. Struik.Memoir (Geological Survey of Canada) ; 421

    Ti-Chiang Chen - The International Law Recognition with Special Reference to Practice in Great Britain and the United States. Edited by L.C. Green, with foreword by J.L. Brierly

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    Kiss A. Ti-Chiang Chen - The International Law Recognition with Special Reference to Practice in Great Britain and the United States. Edited by L.C. Green, with foreword by J.L. Brierly. In: Revue française de science politique, 2ᵉ année, n°4, 1952. pp. 835-836
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