Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2007-11-06
2007-11-06
Tse, Young T. (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C370S210000
Reexamination Certificate
active
10677271
ABSTRACT:
Disclosed is an inventive system and method for extracting signal energy from the guard time portion of a communication frame based on the amount of multipath interference experienced by that communication frame. In one embodiment, N blocks of samples are created from the received frame wherein the samples in the guard time portion of the received frame are included in one of more of the N blocks of samples. The estimated symbols, or estimated bits, determined from the received samples are checked for corruption due to multipath interference. For those blocks for which multipath interference is not detected, the estimated symbols, or estimated bits, are coherently added together so as to take advantage of uncorrupted signal energy from the guard time portion of the frame.
REFERENCES:
patent: 6115354 (2000-09-01), Weck
patent: 6804312 (2004-10-01), Win et al.
patent: 2003/0117943 (2003-06-01), Sakata et al.
patent: 2005/0101264 (2005-05-01), Farlow et al.
Furman William Nelson
Nieto John Wesley
Duane Morris LLP
Tse Young T.
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