Patent ID: 7263376

Claim:
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.