Inventor · disambiguated record
Dayou Qian
Also filed as: QIAN DAYOU
38 granted patents·3 pending applications·248 citations·filing 2007–2014
97Inventor score
Top patents by PatentIndex Score
41 records- 0198US9270379B2Optical nyquist superchannel generation using microwave low-pass filtering and optical equalizationNEC LAB AMERICA INC·Filed 2014·Granted Feb 23, 2016·50 cites·1 claims
- 0292US8098990B2System and method for providing wireless over a passive optical network (PON)HU JUNQIANG·Filed 2007·Granted Jan 17, 2012·21 cites·16 claims
- 0391US9014568B2Next generation optical access network with centralized digital OLTNEC LAB AMERICA INC·Filed 2013·Granted Apr 21, 2015·13 cites·8 claims
- 0491US8233809B2Polarization independent frequency domain equalization (FDE) for chromatic dispersion (CD) compensation in PolMux coherent systemsQIAN DAYOU·Filed 2009·Granted Jul 31, 2012·15 cites·1 claims
- 0591US7978975B2Passive optical network system employing sub-carrier multiplexing and orthogonal frequency division multiple access modulation schemesNEC LAB AMERICA INC·Filed 2008·Granted Jul 12, 2011·16 cites·20 claims
- 0690US8781326B2Energy efficient OFDM transceiverHU JUNQIANG·Filed 2012·Granted Jul 15, 2014·13 cites·18 claims
- 0789US8374514B2Parallel digital coherent detection using symmetrical optical interleaver and direct optical down conversionNEC LAB AMERICA INC·Filed 2010·Granted Feb 12, 2013·10 cites·6 claims
- 0889US8260156B2Adaptive crossing frequency domain equalization (FDE) in digital PolMux coherent systemsQIAN DAYOU·Filed 2009·Granted Sep 4, 2012·15 cites·1 claims
- 0989US8000604B2Orthogonal frequency division multiple access (OFDMA) based passive optical network (PON) architecture and its extension to long distanceNEC LAB AMERICA INC·Filed 2008·Granted Aug 16, 2011·13 cites·14 claims
- 1087US8233797B2Single wavelength source-free OFDMA-PON communication systems and methodsQIAN DAYOU·Filed 2009·Granted Jul 31, 2012·11 cites·20 claims
- 1184US8654439B2Look-up table and digital transmitter based architecture for fiber nonlinearity compensationQIAN DAYOU·Filed 2011·Granted Feb 18, 2014·6 cites·22 claims
- 1283US8472813B2Computationally-efficient MIMO equalization algorithm for high-speed, real-time, adaptive polarization multiplexed (POLMUX) OFDM transmission with direct detectionCVIJETIC NEDA·Filed 2010·Granted Jun 25, 2013·9 cites·30 claims
- 1382US8184973B2Direct detection for receiving polarization multiplexing signalsQIAN DAYOU·Filed 2009·Granted May 22, 2012·9 cites·13 claims
- 1481US8611743B2Optical-layer traffic grooming in flexible optical networksJI PHILIP N·Filed 2011·Granted Dec 17, 2013·5 cites·15 claims
- 1579US8693890B2Look-up table and digital transmitter based architecture for fiber nonlinearity compensationQIAN DAYOU·Filed 2011·Granted Apr 8, 2014·4 cites·20 claims
- 1675US8725006B2Digital signal-to-signal beat noise reduction for filter-less coherent receiving systemHUANG YUE-KAI·Filed 2011·Granted May 13, 2014·4 cites·24 claims
- 1775US8090271B2Differential delay receiver using cross-polarization interferometer for PolMux-DPSK systemQIAN DAYOU·Filed 2008·Granted Jan 3, 2012·5 cites·11 claims
- 1871US8184731B2Feedback adjustable constellation de-mapperQIAN DAYOU·Filed 2009·Granted May 22, 2012·4 cites·18 claims
- 1968US8923457B2Method and system for pilot-based time domain phase noise mitigation for coherent receiverNEC LAB AMERICA INC·Filed 2013·Granted Dec 30, 2014·2 cites·4 claims
- 2068US8798480B2High-speed optical 8-QAM modulation by cascading dual-drive mach-zehnder modulator with I/Q modulatorNEC LAB AMERICA INC·Filed 2012·Granted Aug 5, 2014·2 cites·2 claims
- 2168US8213794B2Programmable optical network architectureWEI WEI·Filed 2009·Granted Jul 3, 2012·3 cites·3 claims
- 2267US8787762B2Optical-layer traffic grooming at an OFDM subcarrier level with photodetection conversion of an input optical OFDM to an electrical signalJI PHILIP N·Filed 2012·Granted Jul 22, 2014·2 cites·6 claims
- 2367US8488652B2Systems and methods for blind equalization in a digital receiverHU JUNQUIANG·Filed 2010·Granted Jul 16, 2013·4 cites·14 claims
- 2464US8358936B2Method and apparatus for an optical duty cycle for an optical digital coherent systemNEC LAB AMERICA INC·Filed 2009·Granted Jan 22, 2013·2 cites·6 claims
- 2564US8064774B2High frequency optical millimeter-wave generation and wavelength reuseYU JIANJUN·Filed 2008·Granted Nov 22, 2011·2 cites·13 claims
- 2662US9252911B2Flexible remote node (RN) for dynamic traffic allocation in passive optical networking (PON) and mobile backhaul (MBH) applicationsNEC LAB AMERICA INC·Filed 2014·Granted Feb 2, 2016·1 cites·14 claims
- 2762US8724998B2Carrier and subcarrier hopping for optical OFDM securityXU LEI·Filed 2012·Granted May 13, 2014·1 cites·20 claims
- 2862US8718490B2Coherent optical orthogonal frequency division multiplexing (OFDM) reception using self optical carrier extractionXU LEI·Filed 2008·Granted May 6, 2014·2 cites·8 claims
- 2962US8064775B2Generation of at least 100 Gbit/s optical transmissionYU JIANJUN·Filed 2008·Granted Nov 22, 2011·2 cites·7 claims
- 3050US8705956B2Carrier frequency offset (CFO) estimator with low complexity and high accuracy for orthogonal-frequency-division-multiplexing (CO-OFDM) systemsCAO MINGZHENG·Filed 2011·Granted Apr 22, 2014·2 cites·18 claims
- 3149US8761612B216 quadrature amplitude modulation optical signal transmitterYU JIANJUN·Filed 2009·Granted Jun 24, 2014·0 cites·10 claims
- 3249US2011069954A1On Improved Optical Network Apparatus Having Optical Line Terminal Blade Protection with 1-to-N Redundancy and No-Service-InterruptionNEC LAB AMERICA INC·Filed 2009·Application pending·0 cites
- 3347US9184854B2Inter-band cross-phase modulation compensation for the mitigation of intra-channel nonlinear impairments in optical fiber transmissionNEC LAB AMERICA INC·Filed 2013·Granted Nov 10, 2015·0 cites·12 claims
- 3447US8953939B2Variable bit-rate QPSK transmitter and method employing polarization manipulationNEC LAB AMERICA INC·Filed 2012·Granted Feb 10, 2015·0 cites·3 claims
- 3547US8099000B2Direct detection receiver using cross-polarization interferometer for polmux-ask systemQIAN DAYOU·Filed 2009·Granted Jan 17, 2012·0 cites·13 claims
- 3647US2009097852A110 Gbps OFDMA-PONNEC LAB AMERICA·Filed 2008·Application pending·0 cites
- 3746US9124326B2Look-up table based digital filter array using digital transmitterNEC LAB AMERICA INC·Filed 2014·Granted Sep 1, 2015·0 cites·1 claims
- 3845US2010086303A1High speed polmux-ofdm using dual-polmux carriers and direct detectionNEC LAB AMERICA INC·Filed 2009·Application pending·0 cites
- 3944US8718474B2Chromatic dispersion compensation using sign operations and lookup tablesQIAN DAYOU·Filed 2011·Granted May 6, 2014·0 cites·10 claims
- 4043US8873970B2Generating a 400-Gbit/s single-channel optical signalYU JIANJUN·Filed 2010·Granted Oct 28, 2014·0 cites·5 claims
- 4138US8615171B2Computationally-efficient equalization in polmux OFDM transmission with direct detection via joint transmitter and receiver processingCVIJETIC NEDA·Filed 2011·Granted Dec 24, 2013·0 cites·29 claims
Join the waitlist — get patent alerts
Get an alert when Dayou Qian files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →