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31. 发明申请

WO2013104340A1 METHOD AND APPARATUS OF USING DIGITAL EQUALIZER FOR CASCADED WAVELENGTH SELECTIVE SWITCH COMPENSATION 审中-公开
标题翻译：使用数字均衡器进行波形选择开关补偿的方法和装置
公开(公告)号：WO2013104340A1
公开(公告)日：2013-07-18
申请号：PCT/CN2013/070423
申请日：2013-01-14
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： ZHANG, Zhuhong , LI, Yanming , LI, Chuandong , ZHU, Fei
IPC分类号： H04B10/00
CPC分类号： H04B10/614 , H04B10/532 , H04B10/556 , H04B10/613 , H04B10/616 , H04L25/03012 , H04L25/03159 , H04L2025/0342 , H04L2025/03541
摘要： An apparatus comprising a frequency-domain equalizer that has been iteratively generated to compensate for filtering effects of a wavelength selective switch, wherein the FDEQ is configured to process in a frequency domain digital samples of a polarization multiplexed phase- shift-keying signal that has been transported over an optical channel.
摘要翻译：一种包括经过迭代产生以补偿波长选择开关的滤波效应的频域均衡器的装置，其中FDEQ被配置为在频域中处理已经经过的偏振复用相移键控信号的数字采样通过光通道传输。

32. 发明申请

WO2012016548A1 METHOD AND APPARATUS FOR BROADBAND CARRIER FREQUENCY AND PHASE RECOVERY IN COHERENT OPTICAL SYSTEM 审中-公开
标题翻译：宽带载波频率和相干光系统相位恢复的方法与装置
公开(公告)号：WO2012016548A1
公开(公告)日：2012-02-09
申请号：PCT/CN2011/078100
申请日：2011-08-08
申请人： HUAWEI TECHNOLOGIES CO., LTD. , ZHANG, Zhuhong , LI, Chuandong , ZHU, Fei , BAI, Yusheng
发明人： ZHANG, Zhuhong , LI, Chuandong , ZHU, Fei , BAI, Yusheng
IPC分类号： H04L27/227
CPC分类号： H04B10/6165 , H04B10/611 , H04B10/613 , H04B10/6161 , H04B10/6164 , H04J14/0228 , H04L1/242 , H04L7/0054 , H04L7/02 , H04L7/027 , H04L7/04 , H04L7/041 , H04L7/08 , H04L25/0202 , H04L25/022 , H04L25/0222 , H04L25/03828 , H04W24/02
摘要： A digital apparatus comprising a fast Fourier transform (FFT) module configured to transform a time domain optical signal into a frequency domain optical signal, a circular shifter coupled to the FFT module and configured to provide coarse frequency offset compensation to the frequency domain optical signal based on an estimated frequency offset; and a frequency offset estimation module coupled to the circular shifter and configured to provide the estimated frequency offset based on a power spectrum of the frequency domain optical signal or a data block header autocorrelation of the time domain optical signal.
摘要翻译：一种数字装置，包括被配置为将时域光信号变换为频域光信号的快速傅里叶变换（FFT）模块，耦合到FFT模块并被配置为向基于频域光信号的粗频偏移补偿提供的圆形移位器估计频偏; 以及耦合到所述圆形移位器并且被配置为基于所述频域光信号的功率谱或所述时域光信号的数据块报头自相关来提供所估计的频率偏移的频率偏移估计模块。

33. 发明申请

WO2022088127A1 METHOD AND APPARATUS FOR LOW-COMPLEXITY SYMBOL-RATE RECEIVER DIGITAL SIGNAL PROCESSING 审中-公开
公开(公告)号：WO2022088127A1
公开(公告)日：2022-05-05
申请号：PCT/CN2020/125638
申请日：2020-10-31
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： KE, Jianhong , HE, Zilong , LI, Chuandong
IPC分类号： H04L27/00
摘要： A digital signal processor (DSP) for a receiver and a method for processing signals in a receiver are provided. The DSP comprises a processor configured to: receive a digital signal at a symbol rate in a frequency domain; and compensate an impairment of the digital signal in the frequency domain.

34. 发明申请

WO2022016885A1 METHOD AND APPARATUS FOR FREQUENCY DOMAIN EQUALIZATION WITH LOW COMPLEXITY AND LOOP DELAY 审中-公开
公开(公告)号：WO2022016885A1
公开(公告)日：2022-01-27
申请号：PCT/CN2021/080320
申请日：2021-03-11
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： LI, Chuandong , KE, Jianhong
IPC分类号： H04B10/61
摘要： Methods and devices are described for frequency domain equalization with low complexity and loop delay. A transmitter inserts pilot symbols into a data signal at intervals of every n data bits. These pilot symbols are used by a receiver-side frequency-domain equalizer to calculate error levels and equalize the received data signal to effect impairment compensation such as SOP tracking. QPSK or BPSK symbols may be used for the pilot symbols, simplifying error calculation into an addition operation instead of the conventional multiplication operation required by conventional FDEQs. Equalizers are described that may operate in a pilot-assisted mode, a conventional decision-directed mode, or both.

35. 发明申请

WO2018064815A1 TRELLIS-BASED PROCESSING FOR ROBUST DIGITAL MULTIBAND TRANSMISSIONS 审中-公开
标题翻译：基于TRELLIS的鲁棒数字多频带传输处理
公开(公告)号：WO2018064815A1
公开(公告)日：2018-04-12
申请号：PCT/CN2016/101503
申请日：2016-10-08
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： ZAMANI, Mahdi , MITRA, Jeebak , NAJAFI, Hossein , ZHANG, Zhuhong , LI, Chuandong
IPC分类号： H04B10/60
CPC分类号： H04B10/616 , H04B10/548 , H04B10/5561 , H04B10/613 , H04B10/614
摘要： Aspects of the present disclosure are directed in part to a receiver DSP unit including an equalization module. The equalization module includes a trellis-based equalization module that may utilize multiple trellis-based processors (TBP), which can each be individually adaptively configured for performing a trellis-based equalization. The design of the TBPs allow them to be configured for compensating a residual Inter-Symbol Interference (ISI) as well as compensating a residual Phase Noise (PN). ISI is an example of an additive impairment and PN is an example of a multiplicative impairment that communication systems, particularly high speed transmission systems such as coherent optical systems, can suffer from.
摘要翻译：本公开的各方面部分地针对包括均衡模块的接收机DSP单元。均衡模块包括基于网格的均衡模块，其可以利用多个基于网格的处理器（TBP），其可以分别自适应地配置用于执行基于网格的均衡。 TBP的设计允许它们被配置为补偿残余符号间干扰（ISI）以及补偿残余相位噪声（PN）。 ISI是加性损伤的一个例子，PN是通信系统，特别是高速传输系统（如相干光学系统）可能遭受的倍增损伤的一个例子。

36. 发明申请

WO2017059666A1 INTENSITY MODULATED DIRECT DETECTION OPTICAL TRANSCEIVER 审中-公开
标题翻译：强度调制直接检测光收发器
公开(公告)号：WO2017059666A1
公开(公告)日：2017-04-13
申请号：PCT/CN2016/079211
申请日：2016-04-13
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： CHUNG, Sung , TANG, Xuefeng , LI, Chuandong , ZHANG, Zhuhong
IPC分类号： H04B10/524 , H04B10/54
CPC分类号： H04B10/541 , H04B10/25133 , H04B10/588 , H04B10/6161
摘要： An optical transceiver using a modulator biased to a non-linear region of the modulator's power transfer function can extend the possible transmission distance of intensity modulated direct detection (IMDD) n-level pulse amplitude modulated (PAM-n) signals. A non-linear look-up-table may compensate for non-linear characteristics of the modulator. An adaptive decision threshold look-up-table may be used to provide adaptive decision levels at the receiver.
摘要翻译：使用偏置到调制器功率传递函数的非线性区域的调制器的光收发器可以扩展强度调制直接检测（IMDD）n级脉冲幅度调制（PAM-n）信号的可能的传输距离。非线性查找表可以补偿调制器的非线性特性。可以使用自适应判决阈值查找表来在接收机处提供自适应判决级别。

37. 发明申请

WO2017036364A1 APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING WIRELESS SIGNALS SUBJECT TO SPECTRAL MASK 审中-公开
标题翻译：用于发送和接收无线信号的设备和方法
公开(公告)号：WO2017036364A1
公开(公告)日：2017-03-09
申请号：PCT/CN2016/096954
申请日：2016-08-26
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： ZAMANI, Mahdi , AHARONY, Ahikam , ZHANG, Zhuhong , LI, Chuandong , HOU, Weikun
IPC分类号： H04B1/02 , H04B17/00
CPC分类号： H04B1/40 , H04L27/0014 , H04L27/32
摘要： Provided is an apparatus and method for transmitting and receiving wireless signals. A transmitting apparatus has a signal processor and a transmitter. The signal processor is configured to generate a signal having a middle channel and at least one side channel. The transmitter is configured to wirelessly transmit the signal subject to a spectral mask that has shoulder regions. According to an embodiment of the invention, the signal processor generates the signal such that each side channel is positioned in one of the shoulder regions of the spectral mask. In this manner, bandwidth from the shoulder regions can be utilized by one or more side channels. Also provided is a receiving apparatus having a receiver configured to wirelessly receive the signal, and a signal processor configured to process the signal.
摘要翻译：提供了一种用于发送和接收无线信号的装置和方法。发送装置具有信号处理器和发送器。信号处理器被配置为产生具有中间信道和至少一个侧信道的信号。发射器被配置为无线地传送受到具有肩部区域的光谱掩模的信号。根据本发明的实施例，信号处理器产生信号，使得每个侧面通道位于光谱掩模的一个肩部区域中。以这种方式，来自肩部区域的带宽可被一个或多个侧面通道利用。还提供了具有被配置为无线地接收信号的接收机的接收设备，以及被配置为处理该信号的信号处理器。

38. 发明申请

WO2016138823A1 SYSTEM AND METHOD FOR OPTICAL NETWORK 审中-公开
标题翻译：光网络系统与方法
公开(公告)号：WO2016138823A1
公开(公告)日：2016-09-09
申请号：PCT/CN2016/074145
申请日：2016-02-19
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping , CHEN, Chen , ZHANG, Zhuhong , LI, Chuandong
IPC分类号： G02B6/28
CPC分类号： H04Q11/0005 , H04B10/25 , H04B10/503 , H04B10/572 , H04J14/021 , H04J14/0275 , H04J14/0282 , H04Q2011/0015 , H04Q2011/0016 , H04Q2011/0018 , H04Q2011/0032 , H04Q2011/0033 , H04Q2011/0039 , H04Q2011/0041 , H04Q2011/005 , H04Q2011/0058
摘要： An optical circuit switching matrix includes a plurality of optical ports, each optical port being optically coupled to a respective one of a plurality of user nodes and an optical coupler having at least one input port optically coupled to the plurality of optical ports, and an output port. The optical circuit switching matrix also includes a wavelength demultiplexer having an input optically coupled to the output port of the optical coupler, and a plurality of output ports, each output port being optically coupled to a respective one of the plurality of optical ports.
摘要翻译：一种光学电路交换矩阵包括多个光学端口，每个光学端口光学耦合到多个用户节点中的相应一个用户节点，以及一个光耦合器，具有光耦合到多个光学端口的至少一个输入端口，港口。光电路切换矩阵还包括具有光耦合到光耦合器的输出端口的输入的波长解复用器和多个输出端口，每个输出端口光耦合到多个光端口中的相应一个光端口。

39. 发明申请

WO2015043431A1 Methods and Apparatuses to Improve Reception of Direct Detection Optical Signals 审中-公开
标题翻译：改善直接检测光信号接收的方法和装置
公开(公告)号：WO2015043431A1
公开(公告)日：2015-04-02
申请号：PCT/CN2014/087086
申请日：2014-09-22
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： CHEN, Chen , LI, Chuandong , ZHANG, Zhuhong
IPC分类号： H04L27/26
CPC分类号： H04L27/2627 , H04B10/25137 , H04B10/516 , H04B10/548 , H04B10/6971 , H04L25/03343 , H04L25/06 , H04L27/2626
摘要： System and method embodiments are provided for improving reception of direct detection optical signals. In an embodiment, a method for optical transmission includes bit loading and power loading, with a digital signal processor (DSP), transmission bits of an orthogonal frequency-division multiplexing (OFDM) signal; calculating, with the DSP, a signal-signal beat interference (SSBI) component of the bit and power loaded OFDM signal by modulating each subcarrier with a symbol; and subtracting, with the DSP, the calculated SSBI component from the bit and power loaded OFDM signal.
摘要翻译：提供了用于改善直接检测光信号的接收的系统和方法实施例。在一个实施例中，一种用于光传输的方法包括位加载和功率加载，数字信号处理器（DSP），正交频分复用（OFDM）信号的传输比特; 利用DSP通过用符号调制每个子载波来与DSP一起计算位和功率加载OFDM信号的信号信号差分干扰（SSBI）分量; 并从DSP中减去来自位和功率加载的OFDM信号的计算的SSBI分量。

40. 发明申请

WO2015039627A1 BIT LOADING FOR OPTICAL DISCRETE MULTI-TONE TRANSMISSION 审中-公开
标题翻译：用于光分离多路传输的双向加载
公开(公告)号：WO2015039627A1
公开(公告)日：2015-03-26
申请号：PCT/CN2014/087064
申请日：2014-09-22
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： CHEN, Chen , ZAMANI, Mahdi , ZHANG, Zhuhong , LI, Chuandong
IPC分类号： H04L27/28 , H04B1/38
CPC分类号： H04B10/2507 , H04B10/2575 , H04B10/40 , H04B10/506 , H04B10/516 , H04B10/541 , H04B10/548 , H04B10/556 , H04B10/697 , H04L5/0046
摘要： System and method embodiments are provided for bit loading for optical Discrete Multi-Tone Transmission (DMT). In an embodiment, a method for bit loading for optical DMT transmission or reception includes receiving, at a processor, a bit data stream, wherein the bit data stream comprises a plurality of subcarriers; assigning, with the processor, a code rate to each of a plurality of forward error correction (FEC) encoders/decoders according to a mapping of a signal-to-noise-ratio (SNR) to a code rate for each of the subcarriers or subcarrier groups, wherein each FEC encoder/decoder corresponds to a respective one of the subcarriers or a respective subcarrier group; and assigning, with the processor, a modulation format to each subcarrier or each subcarrier group according to a mapping of an SNR for each subcarrier or subcarrier group to a bit number for a corresponding subcarrier or subcarrier group.
摘要翻译：提供了用于光离散多音传输（DMT）的比特加载的系统和方法实施例。在一个实施例中，用于光学DMT传输或接收的比特加载的方法包括在处理器处接收比特数据流，其中所述比特数据流包括多个子载波; 根据对每个子载波的信噪比（SNR）与码率的映射，将处理器分配给多个前向纠错（FEC）编码器/解码器中的每一个的码率，或者子载波组，其中每个FEC编码器/解码器对应于子载波中的相应一个或相应的子载波组; 并且根据对于每个子载波组或子载波组的SNR对应于相应副载波组或子载波组的比特数，将处理器分配给每个子载波组或每个子载波组的调制格式。

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