Invention Grant
US07920796B2 DQPSK transmitter with parallel precoder and high-speed DQPSK data stream realignment
有权
具有并行预编码器和高速DQPSK数据流重新对准的DQPSK发射机
- Patent Title: DQPSK transmitter with parallel precoder and high-speed DQPSK data stream realignment
- Patent Title (中): 具有并行预编码器和高速DQPSK数据流重新对准的DQPSK发射机
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Application No.: US11839466Application Date: 2007-08-15
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Publication No.: US07920796B2Publication Date: 2011-04-05
- Inventor: John Brownlee , Boris Kershteyn
- Applicant: John Brownlee , Boris Kershteyn
- Applicant Address: US MD Linthicum
- Assignee: Ciena Corporation
- Current Assignee: Ciena Corporation
- Current Assignee Address: US MD Linthicum
- Agency: Clements Bernard PLLC
- Agent Chistopher L. Bernard; Tyler S. Brown
- Main IPC: H04B10/04
- IPC: H04B10/04
Abstract:
The present invention utilizes field programmable gate arrays (FPGAs) to implement a parallel differential quadrature phase shift keying (DQPSK) precoder and a DQPSK optical transmitter with an automatic realignment process. The present invention can perform DQPSK preceding, modulation, and data stream realignment at any lower rate, and its upper rate is determined by capability in speed and logic resources and external connections of available integrated circuit technology.
Public/Granted literature
- US20090022492A1 DQPSK Transmitter With Parallel Precoder And High-Speed DQPSK Data Stream Realignment Public/Granted day:2009-01-22
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