Inventor

ZHANG ZHUHONG

CA70 patents

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

ZHANG ZHUHONG

HUAWEI TECH CO LTD

Method and apparatus for low-complexity quasi-reduced state soft-output equalizer

Hybrid digital multi-band optical receiver and transmitter

System and method for optical network

Method and apparatus for robust clock recovery in coherent optical systems

System and method for state reduction in trellis equalizers using bounded state enumeration

Direct-detected orthogonal frequency-division multiplexing with dispersion pre-compensation digital signal processing

Methods and apparatuses to improve reception of direct detection optical signals

Carrier-signal power ratio control in direct detection optical systems

Method for low complexity decision metric compression of higher-order square-QAM constellation

Bit loading for optical discrete multi-tone transmission

Bit-channel combiner and combined probabilistic constellation shaping and polar encoder

Systems and methods for compensating polarization dependent loss (PDL) in dual polarized communication network

Device and methods for real-time polarization-dependent loss monitoring at coherent transceivers

Systems and methods for using not perfectly polarized bit channels in parallel polar codes

Parallel polar code with shared data and cooperative decoding

Methods and apparatuses for controlling optical signals in optical networks

Low cost intensity-modulated direct-detection (IMDD) optical transmitter and receiver

System, method and apparatus for Multi-Band Faster-than-Nyquist scheme-based communication

Clock synchronization apparatus, optical transmitter, optical receiver, and clock synchronization method

Generating a pilot tone for an optical telecommunications system

FUTUREWEI TECHNOLOGIES INC

Single carrier flexible bit rate transceiver for coherent optical network

Linear dispersion polarization-time codes and equalization in polarization multiplexed coherent optical system

Method and apparatus for recovering time-domain hybrid modulated QAM signals

Coherent waveform conversion in optical networks

Channel estimation for optical orthogonal frequency division multiplexing systems

Low-complexity, adaptive, fractionally spaced equalizer with non-integer sampling

Chromatic dispersion estimation for digital coherent optical receivers

LI CHUANDONG

Method and apparatus for carrier phase estimation and correction in a coherent optical system

Method and system for discrete multi-tone transmission with multiple modulations

Method with improved phase robustness in coherent detected optical system

Method and apparatus of using joint timing recovery for a coherent optical system

Clock recovery method for polarization multiplexed coherent optical communications

JIANG ZHIPING

System and method for optical switching

Method and system for removing a pilot tone from an optical signal

Generating a pilot tone for an optical telecommunications system

ZHANG ZHUHONG

Method and apparatus for broadband carrier frequency and phase recovery in coherent optical system

Side band pilot tone for digital signal processing in polarization multiplexed coherent optical communication system

ZAMANI MAHDI

Method and apparatus for residual phase noise compensation

Apparatus and method for transmitting and receiving wireless signals subject to a spectral mask

EBRAHIMZAD HAMID

Systems and methods for using special nodes for polar encoding in polar codes

Systems and methods for using not perfectly polarized bit channels in parallel polar codes

CHEN YUANJIE

Method and apparatus for updating a fractional time interval using time-domain interpolators in optical communications

Method and apparatus for frame detection and polarization separation

NG WING CHAU

Apparatus and method for in-phase and quadrature skew calibration in a coherent transceiver

Method and apparatus for coherent transmitter calibration

HUAWEI TECHNOLOGIES CANADA CO LTD

Method and apparatus with improved estimation accuracy and robustness for fine frequency offset estimation in coherent receivers

MEDRA AHMED MOHAMED IBRAHIM

System and method for turbo equalization and decoding in a receiver

ALI SHAH SYED FAISAL

Fractionally spaced adaptive equalizer with non-integer sampling

JANA MRINMOY

Systems and methods for phase noise mitigation in optical superchannels

ABUGHALIEH NASHAT

System and method for adaptive channel equalization in a time varying channel