Received communication signal processing methods and components for wireless communication equipment
First Claim
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1. A wireless transmit receive unit (WTRU) for use in a wireless communication system comprising:
- a power delay profile (PDP) production unit configured to produce groups of corresponding PDPs each having a selected number L of sequential elements that have values representing coherent accumulation of sequential sets of received samples mixed with a known sequence wherein sets of corresponding PDPs are defined by PDPs from each group such that for all PDPs of a set of corresponding PDPs, each PDP element is produced based upon coherent accumulation processing using the same known sequence;
a post processing unit configured to select less than L/2 PDP elements of each PDP and to store the selected PDP elements'"'"' values and respective PDP position values;
said post processing unit further configured to selectively combine stored PDP values such that the values of elements of each PDP of a set of corresponding PDPs that are stored for the same respective PDP position are combined; and
said post processing unit further configured to evaluate the combined values for respective PDP positions against selected thresholds to pass threshold qualified combined values and respective position values for further signal processing for use in determining received signal paths of signals transmitted with the known sequence with which the respective PDP elements are produced.
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Abstract
A wireless transmit receive unit (WTRU) and methods are used in a wireless communication system to process sampled received signals to establish and/or maintain wireless communications. A selectively controllable coherent accumulation unit produces power delay profiles (PDPs). A selectively controllable post processing unit passes threshold qualified magnitude approximation values and PDP positions to a device such as a rake receiver to determine receive signal paths.
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Citations
20 Claims
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1. A wireless transmit receive unit (WTRU) for use in a wireless communication system comprising:
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a power delay profile (PDP) production unit configured to produce groups of corresponding PDPs each having a selected number L of sequential elements that have values representing coherent accumulation of sequential sets of received samples mixed with a known sequence wherein sets of corresponding PDPs are defined by PDPs from each group such that for all PDPs of a set of corresponding PDPs, each PDP element is produced based upon coherent accumulation processing using the same known sequence; a post processing unit configured to select less than L/2 PDP elements of each PDP and to store the selected PDP elements'"'"' values and respective PDP position values; said post processing unit further configured to selectively combine stored PDP values such that the values of elements of each PDP of a set of corresponding PDPs that are stored for the same respective PDP position are combined; and said post processing unit further configured to evaluate the combined values for respective PDP positions against selected thresholds to pass threshold qualified combined values and respective position values for further signal processing for use in determining received signal paths of signals transmitted with the known sequence with which the respective PDP elements are produced. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 11)
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9. A post processing unit for a wireless transmit receive unit (WTRU) in which groups of power delay profiles (PDPs) are produced that each have a selected number L of sequential elements with values representing coherent accumulation of sequential sets of received samples mixed with a known sequence wherein sets of corresponding PDPs are defined by PDPs from each group such that for all PDPs of a set of corresponding PDPs, each PDP element is produced based upon coherent accumulation processing using the same known sequence;
- the post processing unit comprising;
hardware unit configured to select less than L/2 PDP elements of each PDP and to store the selected PDP elements'"'"' values and respective PDP position values; and a software unit configured to selectively combine stored PDP values such that the values of elements of each PDP of a set of corresponding PDPs that are stored for the same respective PDP position are combined; and said software unit further configured to evaluate the combined values for respective PDP positions against selected thresholds to pass threshold qualified combined values and respective position values for further signal processing for use in determining received signal paths of signals transmitted with the known sequence with which the respective PDP elements are produced. - View Dependent Claims (10)
- the post processing unit comprising;
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12. A method for a wireless transmit receive unit (WTRU) of processing power delay profiles (PDPs) where groups of corresponding PDPs each having a selected number L of sequential elements having values representing coherent accumulation of sequential sets of received samples mixed with a known sequence wherein sets of corresponding PDPs are defined by PDPs from each group such that for all PDPs of a set of corresponding PDPs, each PDP element being produced based upon coherent accumulation processing using the same known sequence, the method comprising:
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selecting less than L/2 PDP elements of each PDP and storing the selected PDP elements'"'"' values and respective PDP position values; selectively combining the stored PDP values such that the values of elements of each PDP of a set of corresponding PDPs that are stored for the same respective PDP position are combined; and evaluating the combined values for respective PDP positions against selected thresholds to pass threshold qualified combined values and respective position values for further signal processing for use in determining received signal paths of signals transmitted with the known sequence with which the respective PDP elements are produced. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification