Kang H Lee

US Patent:

6650694, Nov 18, 2003

Filed:

Jun 30, 2000

Appl. No.:

09/607410

Inventors:

Katherine G. Brown - Coppell TX
Sundararajan Sriram - Plano TX
Francis Honore - Houston TX
Kang Lee - Richardson TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H04B 169

US Classification:

375150, 370342

Abstract:

A programmable, flexible, vector correlation engine for CDMA mobile and base station chip rate signal processing. A correlator co-processor (CCP) performs the de-spreading tasks for a RAKE receiver, early/late correlations for time tracking, and has provision for coherent accumulation of different lengths. The CCP also performs energy estimation and non-coherent accumulation functions. The CCP can also perform correlation functions required for delay profile estimation, and for search/acquisition functions. The same centralized Data Path is used to perform all these functions; a common controller generates signals into the Data Path in response to tasks initiated by a host processor (e. g. , DSP). The tasks written into the CCP are performed effectively in parallel by the CCP Data Path.