Invention Grant
- Patent Title: Systems and methods for carrier phase recovery
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Application No.: US17409878Application Date: 2021-08-24
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Publication No.: US11646813B1Publication Date: 2023-05-09
- Inventor: Zhensheng Jia , Junwen Zhang , Mu Xu , Haipeng Zhang , Luis Alberto Campos , Curtis Dean Knittle
- Applicant: CABLE TELEVISION LABORATORIES, INC.
- Applicant Address: US CO Louisville
- Assignee: Cable Television Laboratories, Inc.
- Current Assignee: Cable Television Laboratories, Inc.
- Current Assignee Address: US CO Louisville
- Agent Josh Snider
- Main IPC: H04B10/61
- IPC: H04B10/61 ; H04J14/06 ; H04B10/67

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.
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