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On initialization and search procedures for iterative high–resolution channel parameter estimators

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  • Engineering
  • Physics


costmain.dvi EUROPEAN COOPERATION IN THE FIELD OF SCIENTIFIC AND TECHNICAL RESEARCH ———————————————— EURO-COST ———————————————— COST 2100 TD(09) 956 Vienna, Austria September 28-30, 2009 SOURCE: Aalborg University On Initialization and Search Procedures for Iterative High–Resolution Channel Parameter Estimators G. Steinboeck, T. Pedersen, B.H. Fleury Aalborg University Dept. of Electronic Systems Section NavCom Fredrik Bajers Vej 7C DK-9220 Aalborg East DENMARK J.M. Conrat Orange Labs – Network engineering and tools 6, av. des Usines 900007 Belfort Cedex FRANCE Phone: +45 9815 8615 Fax: +45 9815 1583 Email: [email protected] On Initialization and Search Procedures for Iterative High–Resolution Channel Parameter Estimators Gerhard Steinbo¨ck∗, Jean-Marc Conrat‡, Troels Pedersen∗, Bernard H. Fleury ∗† ∗Section Navigation and Communications, Department of Electronic Systems, Aalborg University, DK-9220 Aalborg East, Denmark †Telecommunications Research Center Vienna (ftw), A-1220 Vienna, Austria ‡France Te´le´com Research and Development, 90007 Belfort Cedex, France Email: [email protected] Abstract—High-resolution parameter estimation of the radio channel is of vital importance for defining param- eters of radio channel models. Typical estimators such as SAGE (Space Alternating Generalized Expectation– Maximization) are implemented in the way to minimize the L2–norm of the residual signal. This leads to a concentra- tion of parameter estimates at the early, high power part of the power delay profile (PDP). Nevertheless, extracting path parameters of the later part of the PDP is often of great interest too. Three methods to extract path parameters over the full PDP are introduced. The methods are applied on measurement data. I. INTRODUCTION The response of the radio channel is commonly mod- eled as a superposition of a number of “path compo- nents”. Each of these components represents the contri- bution of some electromagnetic wave, propagating from the transmitter to the r

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