Inventors:
Gerhard Ammer - Muenchen, DE
William Smith - Bethlehem PA, US
Shuzhan Xu - Coplay PA, US
Assignee:
Agere Systems Inc. - Allentown PA
International Classification:
H04L027/06, H03D001/00, H04B001/707
Abstract:
For use in a CDMA receiver having a Viterbi decoder, a system for, and method of, performing one-pass blind transport format detection (BTFD) with respect to a received frame and a WCDMA receiver incorporating the system or the method. In one embodiment, the system includes: (1) a traceback circuit that performs a zero state BTFD traceback function with respect to at least a Viterbi-decoded portion of the frame, the traceback function being dependent upon a relative position of a BTFD checkpoint and generating hard decision bits and (2) a BTFD point selection circuit, coupled to the traceback circuit, that employs the hard decision bits to determine a location of a BTFD point with respect to the frame.