Patent Number: 7,826,569

Title: Ingress noise reduction in a digital receiver

Abstract: The invention provides a device for reducing ingress noise in a digital signal, comprising a noise predictor for predicting an amount of ingress noise in the digital signal based on past samples of the ingress noise, and a subtractor for subtracting the predicted amount of ingress noise from the digital signal. Channel distortion is compensated for by a noise-independent equalizer, such as a ZF equalizer, placed upstream of the noise predictor. The device may be incorporated, for example, in a cable modem termination system (CMTS) of an hybrid fiber/coax (HFC) network.

Inventors: Popper; Ambroise (Paris, FR), Buda; Fabien (Paris, FR), Sari; Hikmet (Charenton, FR)

Assignee: Juniper Networks, Inc.

International Classification: H03D 1/04 (20060101)

Expiration Date: 2019-11-02 0:00:00