Orthogonal reference signal permutation

Abstract

A method for a wireless communication system is provided. The method includes analyzing a set of signal sources that are operably associated with a set of time domain windows. Then, the method periodically switches the association between the set of time domain windows and the set of signal sources in order to facilitate a determination of one or more signal paths generated by the signal sources.

What is claimed is: 
     
         1 . A method for a wireless communication system, comprising:
 analyzing a set of signal sources that are operably associated with a set of time domain windows; and   periodically determining an association between the set of time domain windows and the set of signal sources in order to facilitate a determination of one or more signal paths generated by the signal sources.   
     
     
         2 . The method of  claim 1 , further comprising analyzing a shift between the time domain windows and the signal sources. 
     
     
         3 . The method of  claim 2 , further comprising determining if a shift has occurred, then assigning an adjacent signal to a present time domain window if the shift has occurred. 
     
     
         4 . The method of  claim 2 , further comprising determining if a shift has occurred, then assigning a received signal to a present time domain window if the shift has not occurred. 
     
     
         5 . The method of  claim 1 , further comprising analyzing L pilot tone observations, where L is a positive integer. 
     
     
         6 . The method of  claim 5 , wherein the pilot tone observations are associated with three or more base stations. 
     
     
         7 . The method of  claim 5 , the set of pilot observations are associated with three or more sectors of a single base station. 
     
     
         8 . A communications apparatus, comprising:
 a processor configured to analyze orthogonal sequences from a base station or sector of a base station, wherein the sequences are alternated to enable a determination of a signal path at a receiver according to a time domain window.   
     
     
         9 . A computer-readable medium, comprising:
 code for analyzing alternative signal sequences at a receiver; and   code for periodically differentiating between the signal sequences to facilitate a determination of signal drift.