公开(公告)号：US11563445B1

公开(公告)日：2023-01-24

申请号：US17336288

申请日：2021-06-01

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Mu Xu ,  Zhensheng Jia ,  Jing Wang ,  Luis Alberto Campos

IPC: H03M3/00 ,  H03M7/36 ,  H03M1/12 ,  G06F17/16 ,  H03M13/00 ,  G06F17/17 ,  H03M1/06

Abstract: A method for differentiator-based compression of digital data includes (a) multiplying a tap-weight vector by an original data vector to generate a predicted signal, the original data vector comprising N sequential samples of an original signal, N being an integer greater than or equal to one, (b) using a subtraction module, subtracting the predicted signal from a sample of the original signal to obtain an error signal, (c) using a quantization module, quantizing the error signal to obtain a quantized error signal, and (d) updating the tap-weight vector according to changing statistical properties of the original signal.

公开(公告)号：US11411649B2

公开(公告)日：2022-08-09

申请号：US16760098

申请日：2018-11-05

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Luis Alberto Campos ,  Zhensheng Jia ,  Jing Wang

IPC: H04B10/2575 ,  H04B10/532 ,  H04B10/61 ,  H04J14/02

Abstract: An optical access network includes an optical hub having at least one processor, and a plurality of optical fiber strands. Each optical fiber strand has a first strand end connected to the optical hub. The network further includes a plurality of nodes connected to at least one segment of a first fiber strand of the plurality of optical fiber strands. Each node is sequentially disposed at respective locations along the first fiber strand at different differences from the optical hub, respectively. The network further includes a plurality of end-points. Each end-point includes a receiver. Each respective receiver (i) has a different optical signal-to-noise ratio (OSNR) from the other receivers, (ii) is operably coupled with at least one node of the plurality of nodes, and (iii) is configured to receive the same optical wavelength signal from the first fiber strand as received by the other receivers.

公开(公告)号：US11271669B2

公开(公告)日：2022-03-08

申请号：US16667401

申请日：2019-10-29

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Luis Alberto Campos ,  Jing Wang ,  Zhensheng Jia ,  Jim Campanell ,  Carmela Stuart ,  Haipeng Zhang

IPC: H04Q11/00 ,  H04J14/02 ,  H04B10/03 ,  H04B10/079 ,  H04B10/25

Abstract: An edge wavelength-switching system includes an optical switch and a wavelength selective switch. The optical switch includes a west hub-side port, an east hub-side port, a west local-side port, and an east local-side port. The wavelength selective switch includes (i) a multiplexed port optically coupled to the west local-side port and (ii) a bypass port optically coupled to the east local-side port, and (iii) a plurality of demultiplexed ports. An optical network includes a network hub including an M-by-N1 wavelength-selective switch, N1>M≥1, a first network node, and a second network node. Each of the first and second network nodes includes a respective edge wavelength-switching system. The network hub, the first network node, and the second network node are optically coupled.

公开(公告)号：US11245472B1

公开(公告)日：2022-02-08

申请号：US17113403

申请日：2020-12-07

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Zhensheng Jia ,  Luis Alberto Campos ,  Jing Wang

IPC: H04B10/40 ,  H04B10/25 ,  H04J14/02 ,  H04B10/61 ,  H04B10/27

Abstract: A communication network includes an optical hub having a first coherent optics transceiver, a fiber node having a second coherent optics transceiver, an optical transport medium operably coupling the first coherent optics transceiver to the second coherent optics transceiver, a first optical circulator disposed at the optical hub, and a second optical circulator disposed at the fiber node. The first coherent optics transceiver is configured to (i) transmit a downstream optical signal at a first wavelength, and (ii) receive an upstream optical signal at the first wavelength. The second coherent optics transceiver is configured to (i) receive the downstream optical signal from the first coherent optics transceiver at the first wavelength, and (ii) transmit the upstream optical signal at the first wavelength. The first and second optical circulators are configured to separate the downstream optical signal from the upstream optical signal.

公开(公告)号：US11139890B2

公开(公告)日：2021-10-05

申请号：US16828371

申请日：2020-03-24

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Jing Wang ,  Luis Alberto Campos ,  Zhensheng Jia

IPC: H04B10/2575 ,  H04B1/00 ,  H03M3/00

Abstract: A baseband processing unit includes a baseband processor configured to receive a plurality of component carriers of a radio access technology wireless service, and a delta-sigma digitization interface configured to digitize at least one carrier signal of the plurality of component carriers into a digitized bit stream, for transport over a transport medium, by (i) oversampling the at least one carrier signal, (ii) quantizing the oversampled carrier signal into the digitized bit stream using two or fewer quantization bits.

公开(公告)号：US11082143B2

公开(公告)日：2021-08-03

申请号：US16543509

申请日：2019-08-16

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Zhensheng Jia ,  Luis Alberto Campos ,  Jing Wang ,  Mu Xu ,  Haipeng Zhang ,  Curtis Dean Knittle

IPC: H04J14/00 ,  H04B10/43 ,  H04J14/02 ,  H04L5/14 ,  H04B10/25

Abstract: A full duplex communication network includes an optical transmitter end having a first coherent optics transceiver, an optical receiver end having a second coherent optics transceiver, and an optical transport medium operably coupling the first coherent optics transceiver to the second coherent optics transceiver. The first coherent optics transceiver is configured to simultaneously transmit a downstream optical signal and receive an upstream optical signal. The second coherent optics transceiver is configured to simultaneously receive the downstream optical signal from the first coherent optics transceiver and transmit the upstream optical signal first coherent optics transceiver. At least one of the downstream optical signal and the upstream optical signal includes at least one coherent optical carrier and at least one non-coherent optical carrier.

公开(公告)号：US10944478B2

公开(公告)日：2021-03-09

申请号：US16711293

申请日：2019-12-11

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Junwen Zhang ,  Zhensheng Jia ,  Luis Alberto Campos ,  Haipeng Zhang ,  Mu Xu ,  Jing Wang ,  Curtis Dean Knittie ,  Chuang Zhou

IPC: H04B10/04 ,  H04B10/50 ,  H04J14/06 ,  H04J14/04 ,  H04B10/63 ,  H04B10/64 ,  H04B10/532

Abstract: An injection locked transmitter for an optical communication network includes a master seed laser source input substantially confined to a single longitudinal mode, an input data stream, and a laser injected modulator including at least one slave laser having a resonator frequency that is injection locked to a frequency of the single longitudinal mode of the master seed laser source. The laser injected modulator is configured to receive the master seed laser source input and the input data stream, and output a laser modulated data stream.

公开(公告)号：US10917175B2

公开(公告)日：2021-02-09

申请号：US16676295

申请日：2019-11-06

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Zhensheng Jia ,  Luis Alberto Campos ,  Jing Wang ,  Mu Xu ,  Haipeng Zhang ,  Curtis Dean Knittle

IPC: H04B10/40 ,  H04B10/61 ,  H04B10/50 ,  H04L5/14 ,  H04B10/25

Abstract: A full duplex communication network includes an optical transmitter end having a first coherent optics transceiver, an optical receiver end having a second coherent optics transceiver, and an optical transport medium operably coupling the first coherent optics transceiver to the second coherent optics transceiver. The first coherent optics transceiver is configured to simultaneously transmit a downstream optical signal and receive an upstream optical signal. The second coherent optics transceiver is configured to simultaneously receive the downstream optical signal from the first coherent optics transceiver and transmit the upstream optical signal first coherent optics transceiver. At least one of the downstream optical signal and the upstream optical signal includes at least one coherent optical carrier and at least one non-coherent optical carrier.

公开(公告)号：US10608852B2

公开(公告)日：2020-03-31

申请号：US16288057

申请日：2019-02-27

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Jing Wang ,  Luis Alberto Campos ,  Zhensheng Jia

IPC: H04L25/49 ,  H04B10/2575 ,  H04W88/08 ,  H03M3/00 ,  H04B1/04

Abstract: A baseband processing unit includes a baseband processor configured to receive a plurality of component carriers of a radio access technology wireless service, and a delta-sigma digitization interface configured to digitize at least one carrier signal of the plurality of component carriers into a digitized bit stream, for transport over a transport medium, by (i) oversampling the at least one carrier signal, (ii) quantizing the oversampled carrier signal into the digitized bit stream using two or fewer quantization bits.

公开(公告)号：US10566994B2

公开(公告)日：2020-02-18

申请号：US16180591

申请日：2018-11-05

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Belal Hamzeh ,  Zhensheng Jia ,  Luis Alberto Campos ,  Curtis Dean Knittle ,  Jing Wang

IPC: H03M3/00 ,  H04B10/58 ,  H04L12/28 ,  H04B10/54

Abstract: A method for virtually performing delta-sigma digitization is provided. The method is performed on a series of digital samples output from a communication stack of a communication network. The method includes steps of obtaining a delta-sigma digitization sampling frequency for the output series of digital samples, calculating an oversampling ratio for the output series of digital samples, interpolating the output series of digital samples at a rate equivalent to the oversampling ratio, and quantizing the interpolated series of digital samples to plurality of discrete predetermined levels.