Inventor

QIAN DAYOU

US38 patents

⚠️ This page may combine multiple inventors who share the name “QIAN DAYOU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

QIAN DAYOU

NEC LAB AMERICA INC

Optical nyquist superchannel generation using microwave low-pass filtering and optical equalization

Next generation optical access network with centralized digital OLT

Orthogonal frequency division multiple access (OFDMA) based passive optical network (PON) architecture and its extension to long distance

Passive optical network system employing sub-carrier multiplexing and orthogonal frequency division multiple access modulation schemes

Parallel digital coherent detection using symmetrical optical interleaver and direct optical down conversion

Method and system for pilot-based time domain phase noise mitigation for coherent receiver

High-speed optical 8-QAM modulation by cascading dual-drive mach-zehnder modulator with I/Q modulator

Method and apparatus for an optical duty cycle for an optical digital coherent system

Flexible remote node (RN) for dynamic traffic allocation in passive optical networking (PON) and mobile backhaul (MBH) applications

Inter-band cross-phase modulation compensation for the mitigation of intra-channel nonlinear impairments in optical fiber transmission

Variable bit-rate QPSK transmitter and method employing polarization manipulation

Look-up table based digital filter array using digital transmitter

QIAN DAYOU

Look-up table and digital transmitter based architecture for fiber nonlinearity compensation

Adaptive crossing frequency domain equalization (FDE) in digital PolMux coherent systems

Single wavelength source-free OFDMA-PON communication systems and methods

Polarization independent frequency domain equalization (FDE) for chromatic dispersion (CD) compensation in PolMux coherent systems

Direct detection for receiving polarization multiplexing signals

Look-up table and digital transmitter based architecture for fiber nonlinearity compensation

Feedback adjustable constellation de-mapper

Differential delay receiver using cross-polarization interferometer for PolMux-DPSK system

Chromatic dispersion compensation using sign operations and lookup tables

Direct detection receiver using cross-polarization interferometer for polmux-ask system

YU JIANJUN

Generation of at least 100 Gbit/s optical transmission

High frequency optical millimeter-wave generation and wavelength reuse

Generating a 400-Gbit/s single-channel optical signal

16 quadrature amplitude modulation optical signal transmitter

HU JUNQIANG

System and method for providing wireless over a passive optical network (PON)

Energy efficient OFDM transceiver

CVIJETIC NEDA

Computationally-efficient MIMO equalization algorithm for high-speed, real-time, adaptive polarization multiplexed (POLMUX) OFDM transmission with direct detection

Computationally-efficient equalization in polmux OFDM transmission with direct detection via joint transmitter and receiver processing

JI PHILIP N

Optical-layer traffic grooming in flexible optical networks

Optical-layer traffic grooming at an OFDM subcarrier level with photodetection conversion of an input optical OFDM to an electrical signal

XU LEI

Carrier and subcarrier hopping for optical OFDM security

Coherent optical orthogonal frequency division multiplexing (OFDM) reception using self optical carrier extraction

HUANG YUE-KAI

Digital signal-to-signal beat noise reduction for filter-less coherent receiving system

WEI WEI

Programmable optical network architecture

HU JUNQUIANG

Systems and methods for blind equalization in a digital receiver

CAO MINGZHENG

Carrier frequency offset (CFO) estimator with low complexity and high accuracy for orthogonal-frequency-division-multiplexing (CO-OFDM) systems