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AssigneeCable Television Laboratories, Inc.
InventorsMu Xu, Zhensheng Jia, Junwen Zhang, Haipeng Zhang, Luis Alberto Campos
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A method and apparatus of distortion compensation during data transmission uses an interweaved look-up table (ILUT) to mitigate residual signal distortions in a signal transmitted over a transmission link. The ILUT interweaves states across both an I and a Q tributary to calculate mean error and an extended symbol basis. As a result, the method works particularly well against two-dimensional distortions like nonlinearity, IQ-imbalance, and quadrature error. The method may be used for either pre-compensation when it is combined with k-means clustering in a transmitter or post-compensation when it is combined with maximum likelihood (ML) detection in a receiver.
A method of compensating for signal distortion in a data transmission payload sent over a transmission link, the method comprising:
A system for compensating for signal distortion in a data transmission payload sent by a transmitter over a transmission link to a receiver comprising at least one processing element to:
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