Received signal determination based upon frame classification

Details Received signal determination based upon frame classification Received signal determination based upon frame classification

2006-10-04

2011-12-20

Fan, Chieh M (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C455S509000

Reexamination Certificate

active

08081687

ABSTRACT:
A receiver includes digital logic for defining a plurality of signal paths for an ingoing digital signal to determine a frame classification. Frames are classified according to a combination of readings of a plurality of correlation block and relative signal (power) strengths. Power detection is specified for frequency bands of interest. The combination of readings and their corresponding pattern may be used to determine whether a frame is being transmitted in a lower bandwidth channel, an upper bandwidth channel or a large bandwidth channel that overlaps the lower and upper bandwidth channels. A transmission type (legacy, mixed mode, Greenfield) may subsequently be determined based upon the identity of the frame channel.

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