公开(公告)号：US10341046B2

公开(公告)日：2019-07-02

申请号：US15479878

申请日：2017-04-05

Applicant: Intel Corporation

Inventor： Bernard Arambepola ,  Noam Tal ,  Sahan S. Gamage ,  Thushara Hewavithana ,  Shaul Shulman

IPC: H04W4/00 ,  H04L1/00 ,  H04L5/00 ,  H04L27/00 ,  H04L27/26

Abstract: Mixed mode constellation mapping to map a data block to a block of sub-carriers based on a configurable set of one or more constellation mapping schemes, and corresponding mixed mode least likelihood ratio (LLR) de-mapping based on the configurable set of one or more modulation schemes. The set may be configurable to include multiple modulation schemes to provide to a SEvSNR measure that is a non-weighted or weighted average of SEvSNR measures of the multiple modulation schemes. Mixed mode constellation mapping may be useful be configurable to control spectral efficiency versus SNR (SEvSNR) over a range of SNR with relatively fine SNR granularity, and may be configurable to control SEvSNR over a range of SNR at a fixed FEC code rate, which may include a highest available or highest permitted code rate.

公开(公告)号：US20190058540A1

公开(公告)日：2019-02-21

申请号：US15717285

申请日：2017-09-27

Applicant: Intel Corporation

Inventor： Nathan Goichberg ,  Shaul Shulman ,  Thushara Hewavithana

IPC: H04J3/06 ,  H04L5/14 ,  H04L25/03

Abstract: Synchronizing methods and architectures for cable modems to transmit and receive Full Duplex (FDX) resource block allocations (RBAs) using filter switching and coordinated updating of equalization coefficients. A cable modem including a block of switchable filters, an analog front end (AFE) and a PHY/MAC System on a Chip (SoC) tuner to, at least in part, provide signals to switch the switchable filters in accordance with the RBA changes and synchronize updating tuner equalizations to match filter switching in a coordinated manner by marking received data at the AFE.

公开(公告)号：US20190044555A1

公开(公告)日：2019-02-07

申请号：US15978213

申请日：2018-05-14

Applicant: Intel Corporation

Inventor： Thushara Hewavithana ,  Shaul Shulman ,  Noam Tal ,  Boaz Kol ,  Nathan Goichberg ,  David Barr

IPC: H04B1/04 ,  H04B3/20 ,  H04L27/26 ,  H04L5/14

Abstract: A method and apparatus for cancelling self-interference in a cable network implementing full duplex (FDX). A processor in a cable modem may obtain a frequency response of an echo channel for at least one sub-channel in an FDX band and calculate filter coefficients based on the frequency response, and an interference canceller cancels the self-interference in the downstream signal. The interference canceller includes filters in a digital domain to generate an interference cancellation signal from a reference signal. In another example, the processor may obtain frequency responses of an echo channel for all sub-channels in a FDX band, combine the frequency responses for the FDX band, and generate a channel impulse response for the FDX band from the combined frequency response. The interference canceller may then cancel the self-interference in the downstream signal in an analog domain based on the channel impulse response.

公开(公告)号：US20190007094A1

公开(公告)日：2019-01-03

申请号：US15719696

申请日：2017-09-29

Applicant: Intel Corporation

Inventor： Nathan Goichberg ,  Shaul Shulman

IPC: H04B3/06 ,  H04B1/38

Abstract: A cable modem transceiver includes a processor configured to derive an instant of time for an upstream calibration signal on basis of upstream scheduling information. Further, the cable modem transceiver includes a transmitter configured to generate the upstream calibration signal at the derived instant of time. The cable modem transceiver additionally includes a detector configured to determine a property of the generated upstream calibration signal. The processor is further configured to derive at least one calibration parameter for the transmitter on basis of the detected property.

公开(公告)号：US10158451B2

公开(公告)日：2018-12-18

申请号：US15790807

申请日：2017-10-23

Applicant: Intel Corporation

Inventor： Bernard Arambepola ,  Noam Tal ,  Sahan S. Gamage ,  Thushara Hewavithana ,  Shaul Shulman

IPC: H04W4/00 ,  H04L1/00 ,  H04L5/00 ,  H04L27/00 ,  H04L27/26

Abstract: Mixed mode constellation mapping to map a data block to a block of sub-carriers based on a configurable set of one or more constellation mapping schemes, and corresponding mixed mode least likelihood ratio (LLR) de-mapping based on the configurable set of one or more modulation schemes. The set may be configurable to include multiple modulation schemes to provide to a SEvSNR measure that is a non-weighted or weighted average of SEvSNR measures of the multiple modulation schemes. Mixed mode constellation mapping may be useful be configurable to control spectral efficiency versus SNR (SEvSNR) over a range of SNR with relatively fine SNR granularity, and may be configurable to control SEvSNR over a range of SNR at a fixed FEC code rate, which may include a highest available or highest permitted code rate.

公开(公告)号：US09954712B1

公开(公告)日：2018-04-24

申请号：US15639528

申请日：2017-06-30

Applicant: Intel Corporation

Inventor： Bernard Arambepola ,  Thushara Hewavithana ,  Sahan S. Gamage ,  Shaul Shulman

IPC: H04B1/10 ,  H04L27/26 ,  H04L5/00

CPC classification number: H04L27/2649 ,  H04L5/0048 ,  H04L27/2678

Abstract: Methods and architectures for blind detection of physical layer control (PLC) signaling for transmitters and receivers having respective misaligned inverse fast Fourier transforms (IFFTs) and (FFTs) includes opening a frequency tracking offset calibration circuit, estimating or calculating a phase discontinuity due to FFT misalignment, closing the frequency tracking offset calibration circuit and applying a frequency correction that includes a frequency offset less the calculated or estimated phase discontinuity.

公开(公告)号：US09780969B2

公开(公告)日：2017-10-03

申请号：US14580904

申请日：2014-12-23

Applicant: Intel Corporation

Inventor： Shaul Shulman ,  Amos Klimker ,  Elihay Shalem ,  Eran Eran Vodevoz

IPC: H04L25/02 ,  H04L25/14 ,  H04L27/00 ,  H04L27/38 ,  H04L1/00

CPC classification number: H04L25/02 ,  H04L1/0071 ,  H04L25/14 ,  H04L27/0002 ,  H04L27/38

Abstract: Systems, apparatus and methods are described including operations for demodulating, via a front end demodulator of an analog front end processor, at least a portion of digital sample data into front end demodulated data. A framer of the analog front end processor may frame data from a selection of the front end demodulated data as well as undemodulated digital sample data remaining from the digital sample data, into frames of front end demodulated data and/or undemodulated digital sample data.

公开(公告)号：US20170272201A1

公开(公告)日：2017-09-21

申请号：US15479878

申请日：2017-04-05

Applicant: Intel Corporation

Inventor： Bernard Arambepola ,  Noam Tal ,  Sahan S. Gamage ,  Thushara Hewavithana ,  Shaul Shulman

IPC: H04L1/00 ,  H04L27/26 ,  H04L5/00 ,  H04L27/00

CPC classification number: H04L1/004 ,  H04L1/0041 ,  H04L5/0046 ,  H04L27/0008 ,  H04L27/2634

Abstract: Mixed mode constellation mapping to map a data block to a block of sub-carriers based on a configurable set of one or more constellation mapping schemes, and corresponding mixed mode least likelihood ratio (LLR) de-mapping based on the configurable set of one or more modulation schemes. The set may be configurable to include multiple modulation schemes to provide to a SEvSNR measure that is a non-weighted or weighted average of SEvSNR measures of the multiple modulation schemes. Mixed mode constellation mapping may be useful be configurable to control spectral efficiency versus SNR (SEvSNR) over a range of SNR with relatively fine SNR granularity, and may be configurable to control SEvSNR over a range of SNR at a fixed FEC code rate, which may include a highest available or highest permitted code rate.