Assessment of delay estimation quality using interference...

Pulse or digital communications – Spread spectrum – Direct sequence

Reexamination Certificate

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Details

C375S144000, C455S303000, C455S296000, C370S342000

Reexamination Certificate

active

07010019

ABSTRACT:
Method and system are disclosed for detecting a situation where it is likely that additional multipath components are available in the channel, but are not included in the RAKE processing. In some embodiments, the invention uses the interference estimates for all RAKE fingers associated with tracked multipath components to detect the fraction of the available signal energy that is captured by the path searcher. The invention provides an activation signal to the path searcher if the fraction of the available power that is captured by the tracked paths falls below a predefined threshold.

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Fukomoto, et al., “Path Search Performance and its Parameter Optimization of Pilot Symbol-Assisted Coherent Rake Receiver for W-CDMA Mobile Radio,” IEICE Trans. Fundamentals, vol. E83-A, No. 11, Nov. 2000.
Fukomoto, et al., “Matched-Filter-Based RAKE Combiner for Wideband DS-CDMA Mobile Radio,” IEICE Trans. Commun., vol. E81-B, No. 7, Jul. 1998.
Amadei, D., Standard Search Report by European Patent Office, completed May 27, 2003, (4 pgs.).

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