Receiver for wireless telecommunication stations and method
AssigneeInterDigital Technology Corporation
InventorsAléxander Reznik, Donald M. Grieco, Hyun Seok Oh
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Abstract
The present invention is directed to an improved telecommunication receiver for receiving wireless multi-path communication signals. A novel RAKE receiver and a time diverse integration system for the calculation of the relative power of received signal samples are provided. Preferably, the receiver is embodied in a UE or base station of a CDMA wireless telecommunication system, such as a 3GPP system.
Claims23
A receiver for processing communication signals, which includes a RAKE receiver having up to a predetermined number of RAKE fingers, for assigning and combining a plurality of different signal paths of received communication signals comprising:
- a RAKE locator which determines signal paths based on windows defined by groups of consecutive signal samples in which samples within a window exceed a first power threshold and designates up to said predetermined number of such windows as candidate windows based on relative power of the samples within the determined windows;
- window search circuitry which analyzes candidate windows to determine if the power of samples of the candidate windows exceeds a second threshold and designates a Fat finger candidate window when at least one of the candidate windows has a selected number of candidate samples which exceed said second threshold;
- a RAKE finger allocator which assigns candidate windows for processing by either a first type of RAKE finger or a different second type of Fat RAKE finger such that candidate windows which are not designated as a Fat finger candidate window are each assigned to a different RAKE finger of said first type.
A method for processing communication signals using a RAKE receiver having up to a predetermined number RAKE fingers which combines a plurality of different signal paths of received communication signals comprising:
- determining signal paths based on windows defined by groups of consecutive signal samples in which samples within a window exceed a first power threshold;
- designating up to said predetermined number of such windows as candidate windows based on relative power of the samples within the determined windows;
- analyzing candidate windows to determine if the power of samples of the candidate windows exceeds a second threshold;
- designating a Fat finger candidate window when at least one of the candidate windows has a second predetermined number of candidate samples which exceed said second threshold;
- assigning candidate windows for processing by either a first type of RAKE finger or a different second type of Fat RAKE finger such that candidate windows which are not designated as a Fat finger candidate window are each assigned to a different RAKE finger of said first type.
Dependencies are inferred from the claim text.