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US 4,058,713 AGranted
Equalization by adaptive processing operating in the frequency domain
AssigneeGeneral Signal Corporation
InventorMichael J. DiToro
Life of this patent
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AssigneeGeneral Signal Corporation
InventorMichael J. DiToro
Estimating the term…
Equalization apparatus for a communication system transmitting through a time or frequency spread medium. The message to be transmitted is partitioned and transmitted in burst or frame by frame form. Each frame comprises the message (unknown at the receiver) followed by a test signal known at the receiver. Time gaps are provided between the message and test signals to avoid overlapping of the received message and test signals due to time-spreading. The received mutilated signals are processed in the frequency domain to obtain a reconstituted version of the transmitted message in the frequency domain. This is re-transformed into the time domain so that the reconstituted message available at the receiver is a close replica of the message which was originally available only at the transmitter.
A signal processor for processing a message signal received over a time-spread or frequency-spread medium to produce an estimate of the transmitted message signal in which a known signal is transmitted along with said message signal and received therewith, comprising:
A communications system for communicating message signals from a transmitting station to a geographically remote receiving station over a time-spread or frequency-spread medium including:
Dependencies are inferred from the claim text.