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1. 发明授权

US09762351B2 Statistics adaptive soft decision forward error correction in digital communication 有权
公开(公告)号：US09762351B2
公开(公告)日：2017-09-12
申请号：US14220049
申请日：2014-03-19
申请人： ZTE (USA) Inc.
发明人： Yi Cai , Zhensheng Jia
IPC分类号： H04L1/00 , H04B10/80 , H04L25/03
CPC分类号： H04L1/0054 , H04L25/03286
摘要： A digital communication receiver uses a maximum likelihood sequence estimation stage to recover symbols from digitized sample values of a received signal. A probability density function is calculated and used to improve a soft decision forward error correction calculation. The results of error decoding, which represent error corrected data bits, are further used to improve the probability density function calculation.

2. 发明申请

US20180294880A1 SYSTEM AND METHOD FOR COHERENT DETECTION WITH DIGITAL SIGNAL PROCESSION 审中-公开
公开(公告)号：US20180294880A1
公开(公告)日：2018-10-11
申请号：US15850782
申请日：2017-12-21
申请人： ZTE (USA) Inc.
发明人： JIANJUN YU , Jianqiang Li , Hung-Chang Chien , Zhensheng Jia
IPC分类号： H04B10/2513 , H04L27/26 , H04B10/61 , H04J14/02 , H04B10/516 , H04B10/50 , H04J14/06
CPC分类号： H04B10/548 , H04B10/5561 , H04B10/613 , H04L27/2637 , H04L27/2697
摘要： Methods and apparatus to realize high spectral efficiency in optical signals transmitted over long distances.

3. 发明授权

US09880351B2 Directly-modulated multi-polarization optical transmitters 有权
公开(公告)号：US09880351B2
公开(公告)日：2018-01-30
申请号：US14254296
申请日：2014-04-16
申请人： ZTE (USA) INC.
发明人： Hung-Chang Chien , Zhensheng Jia , Jianjun Yu
IPC分类号： H04B10/00 , G02B6/10 , H04B10/50 , H04B10/532 , H04B10/556
CPC分类号： G02B6/105 , H04B10/5053 , H04B10/532 , H04B10/5561
摘要： The present invention relates to optical transmitters, transceivers, and transponders used for transmission of information or data in any form through a physical medium dependent (PMD) network. The speed of such networks depends, in part, on the density of information that can be transmitted through the physical medium. Optical transmitters or transceivers can be used to transmit multiple independent signals simultaneously through the same medium using different directions or axes of polarization, where the difference in the directions or axes of polarization can be used to distinguish the multiple signals at the receiver. In this invention, we use a master laser (l0) to synchronize two slave lasers (l1 and l2) by its x-polarization and y-polarization components of carrier, respectively, so that two slave lasers can be enforced to lock on exactly the same wavelength l0 with perpendicular polarization directions.

4. 发明申请

US20140314368A1 DIRECTLY-MODULATED MULTI-POLARIZATION OPTICAL TRANSMITTERS 有权
标题翻译：直接调制多极化光学发射器
公开(公告)号：US20140314368A1
公开(公告)日：2014-10-23
申请号：US14254296
申请日：2014-04-16
申请人： ZTE (USA) INC.
发明人： Hung-Chang Chien , Zhensheng Jia , Jianjun Yu
IPC分类号： G02B6/10
CPC分类号： G02B6/105 , H04B10/5053 , H04B10/532 , H04B10/5561
摘要： The present invention relates to optical transmitters, transceivers, and transponders used for transmission of information or data in any form through a physical medium dependent (PMD) network. The speed of such networks depends, in part, on the density of information that can be transmitted through the physical medium. Optical transmitters or transceivers can be used to transmit multiple independent signals simultaneously through the same medium using different directions or axes of polarization, where the difference in the directions or axes of polarization can be used to distinguish the multiple signals at the receiver. In this invention, we use a master laser (l0) to synchronize two slave lasers (l1 and l2) by its x-polarization and y-polarization components of carrier, respectively, so that two slave lasers can be enforced to lock on exactly the same wavelength l0 with perpendicular polarization directions.
摘要翻译：本发明涉及用于通过物理介质依赖（PMD）网络以任何形式传输信息或数据的光发射机，收发机和应答器。这种网络的速度部分取决于可以通过物理介质传输的信息的密度。光发射器或收发器可用于通过使用不同方向或偏振轴的同一介质同时传输多个独立信号，其中极化方向或偏心轴的差异可用于区分接收器处的多个信号。在本发明中，我们使用主激光器（10）来分别使两个从属激光器（l1和l2）分别乘以载波的x偏振和y偏振分量，从而可以强制执行两个从属激光器来精确地锁定具有垂直偏振方向的相同波长l0。

5. 发明授权

US09391731B2 Nyquist wavelength division multiplexing system 有权
标题翻译：奈奎斯特波分复用系统
公开(公告)号：US09391731B2
公开(公告)日：2016-07-12
申请号：US13778434
申请日：2013-02-27
申请人： ZTE (USA) Inc.
发明人： Zhensheng Jia , Jianjun Yu , Hung-Chang Chien
IPC分类号： H04B10/61 , H04B10/60 , H04J14/02 , H04J14/06
CPC分类号： H04J14/02 , H04J14/0254 , H04J14/06
摘要： Aspects of the present invention include apparatus and methods for transmitting and receiving signals in communication systems. A beam splitter splits an optical signal into a plurality of signals. At least one QPSK modulator generates a plurality of QPSK modulated signals from the plurality of signals. An optical multiplexer combines the plurality of QPSK modulated signals into a multiplexed signal. The multiplexed signal is then transmitted.
摘要翻译：本发明的方面包括在通信系统中发送和接收信号的装置和方法。分束器将光信号分离成多个信号。至少一个QPSK调制器从多个信号产生多个QPSK调制信号。光复用器将多个QPSK调制信号组合成复用信号。然后发送复用的信号。

6. 发明授权

US10256907B2 System and method for coherent detection with digital signal procession 有权
公开(公告)号：US10256907B2
公开(公告)日：2019-04-09
申请号：US15850782
申请日：2017-12-21
申请人： ZTE (USA) Inc.
发明人： Jianjun Yu , Jianqiang Li , Hung-Chang Chien , Zhensheng Jia
IPC分类号： H04B10/2513 , H04L27/26 , H04B10/61 , H04J14/02 , H04B10/516 , H04B10/50 , H04J14/06
摘要： Methods and apparatus to realize high spectral efficiency in optical signals transmitted over long distances.

7. 发明授权

US09329929B2 Soft maximum likelihood sequence estimation in digital communication 有权
标题翻译：数字通信中的软最大似然序列估计
公开(公告)号：US09329929B2
公开(公告)日：2016-05-03
申请号：US14220037
申请日：2014-03-19
申请人： ZTE (USA) Inc.
发明人： Zhensheng Jia , Yi Cai
IPC分类号： H03M13/00 , G06F11/10 , H03M13/25 , H04L1/00
CPC分类号： G06F11/10 , H03M13/256 , H04L1/0047 , H04L1/0054
摘要： A digital communication receiver generates soft decision values at the output of a maximum likelihood sequence estimator module. The values are fed into a following forward error correction module that uses the soft-decision input signal to improve error correction performance. The disclosed techniques can be used for receiving optical signals in an optical communication network.
摘要翻译：数字通信接收器在最大似然序列估计器模块的输出处产生软判决值。这些值被馈送到使用软判决输入信号来改善纠错性能的后续前向纠错模块中。所公开的技术可以用于在光通信网络中接收光信号。

8. 发明申请

US20150023667A1 SYSTEM AND METHOD FOR COHERENT DETECTION WITH DIGITAL SIGNAL PROCESSION 有权
标题翻译：用数字信号处理进行相关检测的系统和方法
公开(公告)号：US20150023667A1
公开(公告)日：2015-01-22
申请号：US14377685
申请日：2013-02-08
申请人： ZTE (USA) Inc.
发明人： Jianjun Yu , Jianqiang Li , Hung-Chang Chien , Zhensheng Jia
IPC分类号： H04B10/2507 , H04B10/50 , H04L27/26
CPC分类号： H04B10/2507 , H04B10/50 , H04B10/548 , H04J14/0298 , H04L25/03178 , H04L27/2096 , H04L27/2601 , H04L27/2627 , H04L27/2697 , H04L2025/03414
摘要： Aspects of the present invention include apparatus and methods for transmitting and receiving signals in communication systems. A multicarrier generator generates a multicarrier signal. An optical demultiplexer separates the multicarrier signal into separate multicarrier signals. At least one QPSK modulator modulates signals from the separate multicarrier signals. An optical multiplexer combines the QPSK modulated signals into a multiplexed signal. The multiplexed signal is then transmitted.
摘要翻译：本发明的方面包括在通信系统中发送和接收信号的装置和方法。多载波发生器产生多载波信号。光解复用器将多载波信号分离成单独的多载波信号。至少一个QPSK调制器调制来自分离的多载波信号的信号。光复用器将QPSK调制信号组合成复用信号。然后发送复用的信号。

9. 发明申请

US20140363159A1 DIGITAL GENERATION OF MULTI-CARRIER OPTICAL SIGNALS 有权
标题翻译：多载波光信号的数字化生成
公开(公告)号：US20140363159A1
公开(公告)日：2014-12-11
申请号：US14302333
申请日：2014-06-11
申请人： ZTE (USA) INC.
发明人： Hung-Chang Chien , Zhensheng Jia , Jianjun Yu
IPC分类号： H04B10/516 , H04B10/508
CPC分类号： H04B10/506 , H04B10/5165 , H04B10/548
摘要： A transmitter of optical signals uses a single light transmitter to modulate a multi-carrier signal. The multi-carrier signal is generated by performing digital signal processing in the digital domain to generate a plurality of components by performing Hilbert transform filtering. The components are modulated on to an optical transmitter as in-phase and quadrature components, thereby generating a multi-carrier waveform using a single optical transmitter.
摘要翻译：光信号的发射机使用单个光发射机来调制多载波信号。通过在数字域中进行数字信号处理来生成多载波信号，以通过执行希尔伯特变换滤波来生成多个分量。这些分量作为同相和正交分量被调制到光发射机，由此使用单个光发射机产生多载波波形。

10. 发明申请

US20140325319A1 STATISTICS ADAPTIVE SOFT DECISION FORWARD ERROR CORRECTION IN DIGITAL COMMUNICATION 有权
标题翻译：统计自适应软判决数字通信中的前向纠错
公开(公告)号：US20140325319A1
公开(公告)日：2014-10-30
申请号：US14220049
申请日：2014-03-19
申请人： ZTE (USA) Inc.
发明人： Yi Cai , Zhensheng Jia
IPC分类号： H04L1/00
CPC分类号： H04L1/0054 , H04L25/03286
摘要： A digital communication receiver uses a maximum likelihood sequence estimation stage to recover symbols from digitized sample values of a received signal. A probability density function is calculated and used to improve a soft decision forward error correction calculation. The results of error decoding, which represent error corrected data bits, are further used to improve the probability density function calculation.
摘要翻译：数字通信接收机使用最大似然序列估计级从接收信号的数字化样本值中恢复符号。计算概率密度函数并用于改进软判决前向纠错计算。代表纠错数据位的错误解码结果进一步用于提高概率密度函数的计算。

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