公开(公告)号：US20190326995A1

公开(公告)日：2019-10-24

申请号：US16460964

申请日：2019-07-02

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Chuang Zhou ,  Zhensheng Jia ,  Luis Alberto Campos ,  Curtis Dean Knittle ,  Jing Wang

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

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：US20190199559A1

公开(公告)日：2019-06-27

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

CPC classification number: H04B10/25753 ,  H03M3/424 ,  H03M3/43 ,  H03M3/454 ,  H03M3/496 ,  H04B1/0042 ,  H04B10/2575 ,  H04B10/541 ,  H04B2210/516 ,  H04J14/0298 ,  H04L25/4906 ,  H04Q11/0067 ,  H04Q11/0071 ,  H04Q11/02 ,  H04W88/085

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：US20190149236A1

公开(公告)日：2019-05-16

申请号：US16191315

申请日：2018-11-14

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Jing Wang ,  Zhensheng Jia ,  Luis Alberto Campos

IPC: H04B10/2575 ,  H04J14/02 ,  H04Q11/00 ,  H04W88/08 ,  H04B10/54 ,  H04Q11/02

Abstract: A digital mobile fronthaul (MFH) network includes a baseband processing unit (BBU) having a digitization interface configured to digitize, using delta-sigma digitization, at least one wireless service for at least one radio access technology. The network further includes a transport medium in operable communication with the BBU. The transport medium is configured to transmit a delta-sigma digitized wireless service from the BBU. The network further includes a remote radio head (RRH) configured to operably receive the delta-sigma digitized wireless service from the BBU over the transport medium.

公开(公告)号：US20190074846A1

公开(公告)日：2019-03-07

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

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.

公开(公告)号：US11888978B1

公开(公告)日：2024-01-30

申请号：US17342151

申请日：2021-06-08

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Jing Wang ,  Bernardo Huberman

IPC: H04L9/08 ,  G06N10/00 ,  H04B10/85 ,  G06F1/10 ,  H04J14/02

CPC classification number: H04L9/0852 ,  G06F1/105 ,  G06N10/00 ,  H04B10/85 ,  H04J14/02 ,  H04L9/0819

Abstract: A measurement-device-independent quantum key distribution (MDI-QKD) network includes a plurality of user nodes connected to untrusted relay node that performs Bell-state measurements on qubits transmitted by the user nodes. The relay node contains a calibration laser that serves as a wavelength reference for the user nodes. The output of the calibration laser is split into two wavelength-calibration signals, which are transmitted to a pair of user nodes via optical fiber. At each user node, a laser diode used to generate weak coherent pulses is injection-locked with the wavelength calibration-signal, thereby ensuring that the user nodes generate photonic qubits with the same wavelength. The embodiments may be implemented with any encoding scheme compatible with MDI-QKD, such as polarization encoding and time-bin phase-encoding. No auxiliary connections between the user nodes are needed, allowing the MDI-QKD network to be scaled up to many users.

公开(公告)号：US11750356B2

公开(公告)日：2023-09-05

申请号：US17838659

申请日：2022-06-13

Applicant: CABLE TELEVISION LABORATORIES, INC.

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

IPC: H04L5/02 ,  H04H20/69 ,  H04L12/28 ,  H04H20/78 ,  H04N21/61

CPC classification number: H04L5/026 ,  H04H20/69 ,  H04H20/78 ,  H04L12/2801 ,  H04L12/2885 ,  H04N21/6118 ,  H04N21/6168

Abstract: An optical network includes a transmitter portion configured to transmit a digitized stream of symbols over a digital optical link, a mapping unit disposed within the transmitter portion and configured to code the transmitted digitized stream of symbols with a mapping code prior to transmission over the digital optical link, a receiver portion configured to recover the coded stream of symbols from the digital optical link, and a demapping unit disposed within the receiver portion and configured to map the recovered coded stream of symbols into an uncoded digitized signal corresponding to the digitized stream of symbols at the transmitter portion prior to coding by the mapping unit.

公开(公告)号：US11716164B1

公开(公告)日：2023-08-01

申请号：US17370592

申请日：2021-07-08

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

CPC classification number: H04J14/002 ,  H04B10/2589 ,  H04B10/43 ,  H04J14/0234 ,  H04J14/0236 ,  H04L5/14

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：US11469825B2

公开(公告)日：2022-10-11

申请号：US17397594

申请日：2021-08-09

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Chuang Zhou ,  Zhensheng Jia ,  Luis Alberto Campos ,  Curtis Dean Knittle ,  Jing Wang

IPC: H04J14/00 ,  H04B10/50 ,  H04B10/63 ,  H04B10/532 ,  H04B10/64 ,  H04J14/06 ,  H04J14/04

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：US11431414B1

公开(公告)日：2022-08-30

申请号：US17201452

申请日：2021-03-15

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Lin Cheng ,  Luis Alberto Campos ,  Jing Wang ,  Zhensheng Jia

IPC: H04B10/00 ,  H04B10/2575 ,  H04B10/27 ,  H04J99/00 ,  H04W72/08 ,  H04W72/04 ,  H04J14/00

Abstract: A resource allocation method is provided for a non-orthogonal multiple access distribution of access network users communicatively coupled to a single transport medium. The method includes steps of allocating a first frequency and time domain resource to a first user and a second frequency and time domain resource to a second user of the access network users, obtaining channel information regarding a particular communication channel of the access network for which resources are allocated, grouping the first user with the second user based on an overlap of the first frequency and time domain resource with the second frequency and time domain resource, and assigning the first user to a different power allocation resource than the second user within the frequency and time domain overlap.

公开(公告)号：US11363304B2

公开(公告)日：2022-06-14

申请号：US17001557

申请日：2020-08-24

Applicant: CABLE TELEVISION LABORATORIES, INC

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

IPC: H04N19/94 ,  H04N19/126 ,  H03M3/00 ,  H04J14/04 ,  H03M1/00 ,  H03M3/04 ,  H03M1/66 ,  H03M1/12 ,  H03M7/30

Abstract: An optical network includes a transmitting portion configured to (i) encode an input digitized sequence of data samples into a quantized sequence of data samples having a first number of digits per sample, (ii) map the quantized sequence of data samples into a compressed sequence of data samples having a second number of digits per sample, the second number being lower than the first number, and (iii) modulate the compressed sequence of data samples and transmit the modulated sequence over a digital optical link. The optical network further includes a receiving portion configured to (i) receive and demodulate the modulated sequence from the digital optical link, (ii) map the demodulated sequence from the second number of digits per sample into a decompressed sequence having the first number of digits per sample, and (iii) decode the decompressed sequence.