Volterra linearizer for digital transmission

Details Volterra linearizer for digital transmission Volterra linearizer for digital transmission

H - Electricity

04

B

325/45

H04B 7/005 (2006.01) H03F 1/32 (2006.01) H04L 27/36 (2006.01) H04L 27/38 (2006.01)

Patent

CA 2024353

Abstract of the Disclosure Characterized nonlinearities in a QAM transmission channel are removed by this linearizer, in which selected bits from a sequence of received symbols on both rails form the address of a PROM. Stored values represent the Volterra expansion of the response of the channel, including the nonlinearity, to the symbol sequence. Symmetries in the Volterra expansion allow the same stored value to be used to correct both AM/AM same rail and AM/PM opposite rail distortion.

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