Patents by Inventor Luis Alberto Campos

Luis Alberto Campos has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11223421
    Abstract: A skew compensation system for a coherent optical communication network includes a transmitter and a receiver in operable communication with an optical transport medium of a coherent optical network. The transmitter includes a first transmitter-side tunable delay line configured to delay transmission of a first signal by a first skew amount, thereby producing a pre-compensated first signal. The receiver includes a first receiver-side tunable delay line configured to delay transmission of the pre-compensated first signal to a digital signal processor (DSP) of the receiver by a second skew amount, thereby producing a final signal that is both pre-compensated and post-compensated (i.e., fully compensated).
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: January 11, 2022
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Mu Xu, Junwen Zhang, Haipeng Zhang, Zhensheng Jia, Luis Alberto Campos
  • Patent number: 11212006
    Abstract: Methods, systems, and devices for network communications to reduce optical beat interference (OBI) in upstream communications are described. For example, a fiber node may provide a seed source to injection lock upstream laser diodes. Therefore, upstream communications from each injection locked laser diode may primarily include the wavelength associated with each seed source. The seed sources may be unique to each end device and configured to minimize OBI. That is, the upstream laser diodes may be generic, but the collected seed source may enable upstream communications at varying wavelengths. The end device may provide upstream communications by externally modulating a signal generated by the injection locked laser diode.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: December 28, 2021
    Assignee: Cable Television Laboratories, Inc.
    Inventor: Luis Alberto Campos
  • Patent number: 11212028
    Abstract: A coherent passive optical network extender apparatus includes an extender transceiver for communication with an associated optical headend. The extender transceiver includes at least one receiving portion, at least one transmitting portion, and an extension processor. The apparatus further includes a signal adaptation unit configured to convert a downstream electrical transmission lane into a plurality of individual wavelengths. Each of the converted individual wavelengths are for transmission to one of an optical node and an end user. The apparatus further includes a plurality of transceivers, disposed within the signal adaptation unit, and configured to process and transmit the converted individual wavelengths as a bundle for retransmission to the respective end users.
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: December 28, 2021
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Zhensheng Jia, Curtis Dean Knittle, Luis Alberto Campos
  • Patent number: 11201777
    Abstract: A method for transmitting data through a multi-media communication network includes converting transmission entities into data symbols at a first communication device, transmitting the data symbols from the first communication device to a second communication device through at least two different types of communication media using only lower PHY layers of the at least two different types of communication media, and converting the data symbols into transmission entities at the second communication device.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: December 14, 2021
    Assignee: Cable Television Laboratories, ino.
    Inventors: Luis Alberto Campos, Jennifer Andreoli-Fang, Judson D. Cary, David Daniel Smith
  • Publication number: 20210368359
    Abstract: Beamforming for adapting wireless signaling beams in an adaptive and agile manner is contemplated. The beamforming may be characterized by adaptively constructing beam form parameters to provide wireless signaling in a manner that maximizes efficiency and bandwidth according to device positioning relative to a responding base station.
    Type: Application
    Filed: August 9, 2021
    Publication date: November 25, 2021
    Inventors: LUIS ALBERTO CAMPOS, JENNIFER ANDREOLI-FANG, THOMAS WILLIAMS
  • Publication number: 20210367676
    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.
    Type: Application
    Filed: August 9, 2021
    Publication date: November 25, 2021
    Inventors: Chuang Zhou, Zhensheng Jia, Luis Alberto Campos, Curtis Dean Knittle, Jing Wang
  • Patent number: 11165437
    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.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: November 2, 2021
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Belal Hamzeh, Zhensheng Jia, Luis Alberto Campos, Curtis Dean Knittle, Jing Wang
  • Publication number: 20210336703
    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.
    Type: Application
    Filed: May 25, 2021
    Publication date: October 28, 2021
    Inventors: Zhensheng Jia, Luis Alberto Campos, Curtis Dean Knittle
  • Patent number: 11159250
    Abstract: A transmitter is configured to transmit data to a receiver over a communications network. The transmitter includes a memory for storing computer-executable instructions and a processor in operable communication with the memory. The processor is configured to (i) collect spectrum data of a spectral band over a first sampling interval, and (ii) store the collected spectrum data in the memory. The transmitter further includes a common path distortion (CPD) detection unit configured to (i) sample the collected spectrum data, over a second sampling interval less than the first sampling interval, for a plurality of sub-bands within the spectral band, (ii) analyze the spectral band and each sub-band for indications of common path distortion, and (iii) inject a test signal configured for detection at a headend of the communications network. The transmitter further includes a modem portion configured to operably communicate with the headend and the receiver.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: October 26, 2021
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Thomas Holtzman Williams, Luis Alberto Campos, Jason W. Rupe
  • Patent number: 11146351
    Abstract: A communications network includes a central communication unit, an optical transport medium, and a plurality of remote radio base stations. The central communication unit generates, within a selected millimeter-wave frequency band, a plurality of adjacent two-tone optical frequency conjugate pairs. Each conjugate pair includes a first optical tone carrying a modulated data signal, and a second optical tone carrying a reference local oscillator signal. The optical transport medium transports the plurality of two-tone conjugate pairs to the plurality of radio base stations, and each base station receives at least one conjugate pair at an optical front end thereof. The optical front end separates the first optical tone from the second optical tone, and converts the first optical tone into a millimeter-wave radio frequency electrical signal.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: October 12, 2021
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Mu Xu, Ruoyu Sun, Balkan Kecicioglu, Junwen Zhang, Haipeng Zhang, Zhensheng Jia, Luis Alberto Campos
  • Publication number: 20210314207
    Abstract: A network dimensioning algorithm for networks, such as DOCSIS 3.1 networks are described. The present system and method combines per-profile traffic characteristics, available bandwidth, legacy coexistence, and detail overhead contributions of cyclic prefix, pilots, excluded subcarriers, FEC, and bit loading among other parameters.
    Type: Application
    Filed: August 6, 2015
    Publication date: October 7, 2021
    Applicant: Cable Television Laboratories, Inc.
    Inventors: Luis Alberto Campos, Joseph Padden
  • Patent number: 11139890
    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.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: October 5, 2021
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Jing Wang, Luis Alberto Campos, Zhensheng Jia
  • Patent number: 11134396
    Abstract: Beamforming for adapting wireless signaling beams in an adaptive and agile manner is contemplated. The beamforming may be characterized by adaptively constructing beam form parameters to provide wireless signaling in a manner that maximizes efficiency and bandwidth according to device positioning relative to a responding base station.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: September 28, 2021
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Luis Alberto Campos, Jennifer Andreoli-Fang, Thomas Williams
  • Patent number: 11115126
    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.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: September 7, 2021
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Zhensheng Jia, Luis Alberto Campos, Curtis Dean Knittie, Jing Wang
  • Patent number: 11108462
    Abstract: A skew compensation system for a coherent optical communication network includes a transmitter modulator having a first driver input for receiving a first signal from a first channel, a second driver input for receiving a second signal from a second channel, a source input for receiving a continuous wave source signal, and a modulation output in communication with an optical transport medium of the network. The system further includes a tunable delay line disposed between the second channel and the second driver input for inserting a pre-determined training sequence onto the second signal prior to the second driver input, and a processor for determining a skew amount between the second signal at the second driver input and the first signal at the first driver input, calculating a pre-compensation value corresponding to the skew amount, and reducing the skew amount at the modulation output according to the pre-compensation value.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: August 31, 2021
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Mu Xu, Luis Alberto Campos, Haipeng Zhang, Junwen Zhang, Zhensheng Jia
  • Patent number: 11109238
    Abstract: One wireless telecommunications system includes a Mobile Central Office (MCO) for capacity sharing via a master scheduling system. The MCO is communicatively coupled to a plurality of wireless base stations, each being operable to handle a session from a wireless device and to handoff the session to another wireless base station when the wireless device moves into a range of the other base station. Each of the wireless base stations is operable to convey capacity information to the master scheduling system through the MCO, and to acquire capacity from one or more wireless base stations of another MCO when directed by the master scheduling system.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: August 31, 2021
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Luis Alberto Campos, Bernard McKibben, Jennifer Andreoli-Fang, Joey Padden, Justin Colwell, Ian MacMillan
  • Patent number: 11108490
    Abstract: A digital receiver is configured to process a polarization multiplexed carrier from a communication network. The polarization multiplexed carrier includes a first polarization and a second polarization. The receiver includes a first lane for transporting a first input signal of the first polarization, a second lane for transporting a second input signal of the second polarization, a dynamic phase noise estimation unit disposed within the first lane and configured to determine a phase noise estimate of the first input signal, a first carrier phase recovery portion configured to remove carrier phase noise from the first polarization based on a combination of the first input signal and a function of the determined phase noise estimate, and a second carrier phase recovery portion configured to remove carrier phase noise from the second polarization based on a combination of the second input signal and the function of the determined phase noise estimate.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: August 31, 2021
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Zhensheng Jia, Junwen Zhang, Mu Xu, Haipeng Zhang, Luis Alberto Campos, Curtis Dean Knittle
  • Patent number: 11101895
    Abstract: An optical network communication system utilizes a coherent passive optical network (PON). The system includes an optical line terminal (OLT) having a downstream transmitter and an upstream receiver system configured for time-wavelength division coherent detection. The system further includes a splitter in operable communication with the OLT, and a plurality of optical network units (ONUs) in operable communication with the splitter. Each of the plurality of ONUs is configured to (i) receive downstream coherent burst signals from the OLT, and (ii) transmit at least one upstream burst signal to the OLT. The upstream receiver system further includes a power control module and a local oscillator (LO) configured to generate an optical LO signal The power control module is configured to adaptively control, in real-time, a power level of the optical LO signal.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: August 24, 2021
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Junwen Zhang, Luis Alberto Campos, Zhensheng Jia
  • Patent number: 11088761
    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.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: August 10, 2021
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Chuang Zhou, Zhensheng Jia, Luis Alberto Campos, Curtis Dean Knittle, Jing Wang
  • Patent number: 11089488
    Abstract: Beamforming for adapting wireless signaling beams in an adaptive and agile manner is contemplated. The beamforming may be characterized by adaptively constructing beam form parameters to provide wireless signaling in a manner that maximizes efficiency and bandwidth according to device positioning relative to a responding base station.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: August 10, 2021
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Luis Alberto Campos, Jennifer Andreoli-Fang, Thomas Williams