Interference cancelling circuit and method
Patent 4995104 Issued on February 19, 1991. Estimated Expiration Date: 
May 8, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 8, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3648171 Digital communications receiver for dual input signal Interference cancellation method and apparatus Crosstalk reduction in unbalanced QPSK detectors Echo canceller for bidirectional digital transmission Frequency demodulator having circuit cancelling undesired signal components Patent #: 4908581 InventorAssigneeApplicationNo. 348442 filed on 05/08/1989US Classes:370/201, CROSSTALK SUPPRESSION327/100, SIGNAL CONVERTING, SHAPING, OR GENERATING370/286, Echo suppression or cancellation375/349, Plural signal paths in receiver379/417, Anticrosstalk455/295Modulation distortion or cross talk correction or eliminationExaminersPrimary: Olms, Douglas W.Assistant: Jung, Min Attorney, Agent or FirmInternational ClassH04B 003/14AbstractA receiver includes an interference canceller circuit which receives a corrupted signal and makes an estimate of the desired signal. Subsequently, an estimate of the interference signal is determined by subtracting the estimated desired signal from a delayed version of the received signal. The receiver forms a final estimate of the desired signal by subtracting the estimated interference from a second delayed version of the received signal. | |
