Invention Grant
- Patent Title: Ingress noise reduction in a digital receiver
- Patent Title (中): 数字接收机中的入口噪声降低
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Application No.: US12106708Application Date: 2008-04-21
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Publication No.: US07826569B2Publication Date: 2010-11-02
- Inventor: Ambroise Popper , Fabien Buda , Hikmet Sari
- Applicant: Ambroise Popper , Fabien Buda , Hikmet Sari
- Applicant Address: US CA Sunnyvale
- Assignee: Juniper Networks, Inc.
- Current Assignee: Juniper Networks, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Harrity & Harrity, LLP
- Priority: EP01400956 20010412
- Main IPC: H03D1/04
- IPC: H03D1/04

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.
Public/Granted literature
- US20090003372A1 INGRESS NOISE REDUCTION IN A DIGITAL RECEIVER Public/Granted day:2009-01-01
Information query
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