The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 04, 2004
Filed:
May. 26, 1999
Georg Frank, Nürnberg, DE;
Mathias Schulist, Erlangen, DE;
Wolfgang Granzow, Heroldsberg, DE;
Alexander Maurer, Büchenbach, DE;
Branislav Popovic, Solna, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
The invention relates to a multipath propagation delay determining means (STU, FIGS. ) for determining a power delay spectrum (DPS) of a CDMA signal transmission between a CDMA base station (BS) and a CDMA mobile station (MS) on a plurality of propagation paths (P , P ) within a cell (CL) of a CDMA communication system, comprising an A/D conversion means (A/D) for converting an analog CDMA multipath signal (S , S ) received from at least one antenna (Ant , Ant ) within said cell (CL) into a digital CDMA multipath signal (S , S ) consisting of consecutive radio frames (RF . . . RFn) including consecutive time slots (TS . . . TSm) with complex pilot symbols (PSi) and data symbols (Pdi), a demultiplexing means (PI-DEMUX) for extracting complex pilot symbols (PSi) and data symbols (PDi) from at least two consecutive time slots (TSk−1, TSk, TSk+1) of each radio frame (RFn) and for storing them consecutively in a memory means (BUF) thereof; and a searching means (S . . . SL) for determining a power delay profile (DPS, DPS , DPS , FIG. ) of said each antenna (Ant. , Ant. ) on the basis of said extracted and stored complex pilot symbols and said data symbols (PSi, PDi).