公开(公告)号：US11108462B2

公开(公告)日：2021-08-31

申请号：US16573872

申请日：2019-09-17

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Mu Xu ,  Luis Alberto Campos ,  Haipeng Zhang ,  Junwen Zhang ,  Zhensheng Jia

IPC: H04B10/079 ,  H04B10/54 ,  H04B10/61 ,  H04B10/27

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.

公开(公告)号：US11101895B2

公开(公告)日：2021-08-24

申请号：US16530838

申请日：2019-08-02

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Junwen Zhang ,  Luis Alberto Campos ,  Zhensheng Jia

IPC: H04B10/61

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.

公开(公告)号：US11088761B2

公开(公告)日：2021-08-10

申请号：US16847463

申请日：2020-04-13

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：US11044692B2

公开(公告)日：2021-06-22

申请号：US16718446

申请日：2019-12-18

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Luis Alberto Campos ,  Alireza Babaei

IPC: H04W64/00 ,  H04W4/06 ,  H04B7/06 ,  H04W52/28 ,  H04W56/00 ,  H04L5/00 ,  H04B17/12 ,  H04B17/318 ,  H04B7/024 ,  H04B17/00 ,  H04W48/20

Abstract: A cooperative wireless system using a multicast protocol to facilitate coordinating coherent addition and subtraction of wireless signaling or other beams originating from a plurality of antenna units at a target location is contemplated. The system may utilize multicast-based regulation and distribution of transmission control parameters necessary for the antenna units to synchronize the wireless signaling in a manner sufficient to enable the coherent addition and subtraction thereof at the target location.

公开(公告)号：US10972321B2

公开(公告)日：2021-04-06

申请号：US15930098

申请日：2020-05-12

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Jing Wang ,  Luis Alberto Campos ,  Zhensheng Jia

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

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：US10958371B2

公开(公告)日：2021-03-23

申请号：US16657781

申请日：2019-10-18

Applicant: CABLE TELEVISION LABORATORIES, INC

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

IPC: H04B10/00 ,  H04J14/02 ,  H04J14/08

Abstract: An optical network communication system utilizes a passive optical network including an optical hub having an optical line terminal, downstream transmitter, an upstream receiver, a processor, and a multiplexer. The upstream receiver includes a plurality of TWDMA upstream subreceivers. The system includes a power splitter for dividing a coherent optical signal from the optical hub into a plurality of downstream wavelength signals, a long fiber to carry the coherent optical signal between the optical hub and the power splitter, and a plurality of serving groups. Each serving group includes a plurality of optical network units configured to (i) receive at least one downstream wavelength signal, and (ii) transmit at least one upstream wavelength signal. The system includes a plurality of short fibers to carry the downstream and upstream wavelength signals between the power splitter and the optical network units, respectively. Each upstream subreceiver receives a respective upstream wavelength signal.

公开(公告)号：US10951314B2

公开(公告)日：2021-03-16

申请号：US16729960

申请日：2019-12-30

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：US20210050906A1

公开(公告)日：2021-02-18

申请号：US17086632

申请日：2020-11-02

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Luis Alberto Campos ,  Jennifer Andreoli-Fang ,  Joey Padden ,  Ian MacMillan

IPC: H04B7/12 ,  H04B7/0413 ,  H04L27/26 ,  H04B7/06

Abstract: A multiple-input multiple-output (MIMO) capable system is contemplated. The communication system may include a signal processor configured to separate an input stream into multiple signal paths to facilitate simultaneous transport through a communication medium. The capability to simultaneously transmit multiples signal paths may be beneficial in order to maximize throughput and/or minimize expense.

公开(公告)号：US10924214B2

公开(公告)日：2021-02-16

申请号：US16047335

申请日：2018-07-27

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Belal Hamzeh ,  Jennifer Andreoli-Fang ,  Alireza Babaei ,  Luis Alberto Campos

IPC: H04L1/00 ,  H03M13/35 ,  H04L27/00 ,  H04J3/06 ,  H04J3/16 ,  H04L5/00 ,  H04W72/04 ,  H04W72/08 ,  H04W84/12 ,  H04W76/10

Abstract: Systems and methods presented herein provide for altering communications of a LTE wireless communication system operating in an RF band with a conflicting WiFi system. In one embodiment, an LTE system includes a wireless base station operable to transmit downlink communications to a UE in the RF band and to receive uplink communications from the UE in the RF band. The LTE system also includes a processor operable to detect the uplink communications from the UE, to estimate a location of the UE based on the detected uplink communications, to determine a communication capability between the UE and the wireless base station based on the location of the UE, and to downgrade the downlink communications from the wireless base station to the UE based on the determined communication capability to avoid interference with the WiFi communication system.

公开(公告)号：US20210036802A1

公开(公告)日：2021-02-04

申请号：US16964536

申请日：2019-01-23

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Luis Alberto Campos ,  Jennifer Andreoli-Fang ,  Judson D. Cary ,  David Daniel Smith

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

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. A network implementing a universal data link includes a first communication device configured to convert transmission entities into data symbols, a second communication device configured to convert the data symbols into transmission entities, at least a first communication medium and a second communication medium communicatively coupled between the first communication device and the second communication device, and a first physical-layer translator configured to translate data symbols without converting the data symbols into transmission entities. In order to reduce processing time and end-to-end latency, the physical-layer translator only performs demodulation and modulation operations, optionally also equalization.