Frequency tracking using pilot and non-pilot symbols

Details Frequency tracking using pilot and non-pilot symbols Frequency tracking using pilot and non-pilot symbols

2006-08-15

2006-08-15

Bayard, Emmanuel (Department: 2638)

Pulse or digital communications

Receivers

Angle modulation

Reexamination Certificate

active

07092459

ABSTRACT:
In one embodiment, the invention is directed toward frequency tracking techniques using control symbols that include both pilot and non-pilot symbols. For example, both the pilot and non-pilot symbols can be used in estimating frequency error of a received signal. The contribution of non-pilot symbols to the estimation can be weighted according to a confidence level associated with each non-pilot symbol. In some cases, soft decisions are generated for the non-pilot symbols and then used with the pilot symbols for frequency tracking. In this manner, the frequency tracking loop can be improved.

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