Optical communications – Transmitter – Having particular modulation
Reexamination Certificate
2011-04-05
2011-04-05
Phan, Hanh (Department: 2613)
Optical communications
Transmitter
Having particular modulation
C398S183000, C398S192000, C398S193000, C398S194000, C398S195000, C375S308000, C375S354000, C375S355000, C385S024000, C385S015000
Reexamination Certificate
active
07920796
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.
REFERENCES:
patent: 7555061 (2009-06-01), Katagiri et al.
patent: 7689133 (2010-03-01), Katagiri et al.
patent: 2002/0124030 (2002-09-01), Enam et al.
patent: 2003/0043434 (2003-03-01), Brachmann et al.
patent: 2005/0074245 (2005-04-01), Griffin
patent: 2006/0193399 (2006-08-01), Katagiri et al.
patent: 2006/0269294 (2006-11-01), Kikuchi
patent: 2008/0118246 (2008-05-01), Steidl et al.
Yoshiaki Konishi, Kazuyuki Ishida, Kazuo Kubo and Takashi Mizuochi; True PRBS Transmission DQPSK by Differential Precoder Employing Parallel Prefix Network; Information Technology R&D Center, Mitsubishi Electric Corporation 5-1-1, Ofuna Kamakura Japan; (c) 2006 Optical Society of America.
M. Serbay, C. Wree and W. Rosenkranz; Implementation of differential precoder for high-speed optical DQPSK transmission; Electronics Letters; Sep. 30, 2004; vol. 40 No. 20.
Written Opinion of the International Searching Authority (Form PCT/ISA/237); PCT Application No. PCT/US08/72861; Jun. 18, 2009.
International Search Report and Written Opinion of the International Searching Authority (Form PCT/ISA/220); PCT Application No. PCT/US08/72861; Jun. 18, 2009.
Brownlee John
Kershteyn Boris
Bernard Chistopher L.
Brown Tyler S.
Ciena Corporation
Clements Bernard PLLC
Phan Hanh
LandOfFree
DQPSK transmitter with parallel precoder and high-speed... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with DQPSK transmitter with parallel precoder and high-speed..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and DQPSK transmitter with parallel precoder and high-speed... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2738192