公开(公告)号：WO2018053820A1

公开(公告)日：2018-03-29

申请号：PCT/CN2016/100002

申请日：2016-09-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： ZAMANI, Mahdi ,  TORBATIAN, Mehdi ,  MITRA, Jeebak ,  ZHANG, Zhuhong ,  LI, Chuandong

IPC: H04B10/61

CPC classification number: H04L7/0075 ,  H04B10/60 ,  H04B10/613 ,  H04B10/6161 ,  H04B10/6166 ,  H04L7/0029 ,  H04L7/0278

Abstract: The optical channel between a coherent optical transmitter and a coherent optical receiver may include one or more components that act as a bandpass filter with a passband that is narrower than the signal bandwidth. Such a narrow filter may significantly attenuate the signal content close to the band edge of the data signal. As a result, timing error detection may work less effectively, and therefore clock recovery may be less effective or fail. Methods and systems are disclosed in which a single optical carrier is used to transmit a data signal that has multiple bands, and timing error detection is performed at the receiver using one or more inner bands of the multiple bands. The timing error detection may therefore be made more robust to the effects of the narrow filtering.

Abstract translation: 相干光发射器和相干光接收器之间的光通道可以包括一个或多个充当带通滤波器的部件，其通带窄于信号带宽。 这种窄的滤波器可能会显着衰减接近数据信号的频带边缘的信号内容。 结果，定时错误检测可能效果较差，因此时钟恢复可能效率较低或失败。 公开了使用单个光载波来传输具有多个频带的数据信号的方法和系统，并且使用多个频带中的一个或多个内频带在接收机处执行定时误差检测。 因此，对于窄滤波的影响，定时误差检测可以更加稳健。

公开(公告)号：WO2016112765A1

公开(公告)日：2016-07-21

申请号：PCT/CN2015/097386

申请日：2015-12-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： LI, Chuandong ,  ZHANG, Zhuhong ,  ZAMANI, Mahdi

IPC: H04B10/25 ,  H04L27/00 ,  H04L1/00

CPC classification number: H04B10/5161 ,  H04L27/2601

Abstract: Optical network devices and method for optical network communications in discrete multi-tone (DMT) are provided. A serial information signal is converted to groups of bits and loaded to parallel processing branches based on bit rates of the parallel processing branches. Each branch is configured to encode the associated group of data bits on the associated tone. A first bit rate and modulation and power allocation to a first branch of the branches may be different from a second bit rate and modulation and power allocation to a second branch of the branches. To recover the incoming data, the encoded signal may be parallel-processed using branches with different demodulation formats and provide the serial data stream.

Abstract translation: 提供了离散多音（DMT）光网络通信的光网络设备和方法。 基于并行处理分支的比特率，将串行信息信号转换为比特组并加载到并行处理分支。 每个分支被配置为对相关联音调上的相关联的数据位组进行编码。 对分支的第一分支的第一比特率和调制和功率分配可以不同于第二比特率以及对分支的第二分支的调制和功率分配。 为了恢复输入数据，编码信号可以使用具有不同解调格式的分支并行处理并提供串行数据流。

公开(公告)号：WO2017059783A1

公开(公告)日：2017-04-13

申请号：PCT/CN2016/100836

申请日：2016-09-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： ZAMANI, Mahdi ,  NAJAFI, Hossein ,  YAO, Demin ,  MITRA, Jeebak ,  LI, Chuandong ,  ZHANG, Zhuhong

IPC: H04L27/00

CPC classification number: H04L25/03273 ,  H04L25/03203 ,  H04L27/0014 ,  H04L27/2275 ,  H04L27/3836 ,  H04L2027/0038

Abstract: A method and apparatus for performing residual phase noise compensation is described. A coarse carrier compensation of a received modulated signal is performed to obtain a coarse carrier compensated signal and a trellis-based residual carrier recovery is performed to estimate a residual phase noise of the coarse carrier compensated signal. The coarse carrier compensated signal is compensated based on the estimated residual phase noise.

Abstract translation: 描述了执行剩余相位噪声补偿的方法和装置。 执行接收的调制信号的粗略载波补偿以获得粗略的载波补偿信号，并且执行基于网格的残余载波恢复以估计粗略载波补偿信号的残余相位噪声。 基于估计的残余相位噪声来补偿粗略载波补偿信号。

公开(公告)号：WO2016115977A1

公开(公告)日：2016-07-28

申请号：PCT/CN2016/070155

申请日：2016-01-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： ZAMANI, Mahdi ,  ZHANG, Zhuhong ,  LI, Chuandong

IPC: H04B7/204

CPC classification number: H04L25/024 ,  H04B10/6164 ,  H04B10/6165 ,  H04L27/0014 ,  H04L27/2271 ,  H04L27/3827 ,  H04L2027/0038 ,  H04L2027/0057 ,  H04L2027/0085

Abstract: The present disclosure provides a method and system for fine estimation of a local oscillator frequency offset of a received signal at a coherent receiver, by evaluating the probability mass function (PMF) of the signal phase of output symbols at different frequencies. At frequencies other than the actual frequency offset, the signal phase is uniformly distributed in [-π, π] such that the summation of a function of PMF values where the function is convex or concave between 0 and 1 can be utilized to determine an a frequency offset to be used by the coherent receiver.

Abstract translation: 本公开提供了一种用于通过评估不同频率处的输出符号的信号相位的概率质量函数（PMF）来精细估计相干接收机处的接收信号的本地振荡器频率偏移的方法和系统。 在实际频率偏移以外的频率下，信号相位均匀分布在[-π，π]中，使得功能在0和1之间的凸起或凹入的PMF值的函数的总和可用于确定a 频率偏移由相干接收机使用。

公开(公告)号：WO2017059784A1

公开(公告)日：2017-04-13

申请号：PCT/CN2016/100841

申请日：2016-09-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： ZAMANI, Mahdi ,  MITRA, Jeebak ,  ZHANG, Zhuhong ,  LI, Chuandong ,  NAJAFI, Hossein ,  YAO, Demin

IPC: H04B1/12

CPC classification number: H04B10/6165 ,  H04B10/616 ,  H04L1/0054 ,  H04L25/03178

Abstract: A digital signal processing method and apparatus is described. The digital processing apparatus comprises a coarse carrier recovery module for performing a coarse carrier compensation of a received modulated signal； and a trellis-based equalization module selectable between a first mode for performing a trellis-based equalization to compensate a residual inter-symbol interference of the received modulated signal and a second mode for performing a trellis-based equalization to compensate a residual phase noise of the received modulated signal.

Abstract translation: 描述了数字信号处理方法和装置。 数字处理装置包括：粗略载波恢复模块，用于对接收到的调制信号进行粗略的载波补偿; 以及基于网格的均衡模块，可在用于执行基于网格的均衡以补偿所接收的调制信号的残留的符号间干扰的第一模式和第二模式之间进行选择，所述第二模式用于执行基于网格的均衡以补偿残留相位噪声 接收的调制信号。

公开(公告)号：WO2017020800A1

公开(公告)日：2017-02-09

申请号：PCT/CN2016/092486

申请日：2016-07-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： AHARONY, Ahikam ,  ZAMANI, Mahdi

IPC: H04B7/10

CPC classification number: H04L1/0033 ,  H04B7/0469 ,  H04B7/0632 ,  H04B7/0641 ,  H04B7/10 ,  H04L1/0003 ,  H04L1/0006

Abstract: Provided is an apparatus and method for transmitting and receiving polarized signals. Wireless communication with multiple polarized signals may experience greater attenuation on one polarized signal than another polarized signal. The polarized signal that is more attenuated limits overall throughput for the wireless communication. According to an embodiment of the invention, signals undergo rotation processing with a transformation involving a rotation matrix prior to transmission. Each polarized signal that is transmitted is based on a different weighted combination of the signals. The rotation processing can be performed with an objective that signals recovered at a receiver have comparable signal quality, which can increase overall throughput. In some implementations, the rotation processing is performed based on feedback to dynamically adjust the rotation processing.

Abstract translation: 提供了一种用于发送和接收偏振信号的装置和方法。 与多个极化信号的无线通信可能在一个偏振信号上比另一个偏振信号具有更大的衰减。 更加衰减的极化信号限制了无线通信的总体吞吐量。 根据本发明的实施例，信号在传输之前通过涉及旋转矩阵的变换进行旋转处理。 传输的每个偏振信号基于信号的不同加权组合。 可以以在接收机处恢复的信号具有相当的信号质量的目的来执行旋转处理，这可以提高总吞吐量。 在一些实现中，基于反馈来执行旋转处理以动态地调整旋转处理。

公开(公告)号：WO2016078569A1

公开(公告)日：2016-05-26

申请号：PCT/CN2015/094805

申请日：2015-11-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： ZAMANI, Mahdi ,  ZHANG, Zhuhong ,  LI, Chuandong

IPC: H04L27/227 ,  H04B10/61 ,  H04B10/2513

CPC classification number: H04B10/6161 ,  H04B10/613 ,  H04B10/614

Abstract: An apparatus comprises a front end configured to receive an optical signal, and convert the optical signal into a plurality of digital signals, and a processing unit coupled to the front end and configured to determine a best-match chromatic dispersion (CD) estimate in the optical signal by optimizing a cost function based on signal peaks of the plurality of digital signals.

Abstract translation: 一种装置包括：前端，被配置为接收光信号，并将光信号转换成多个数字信号;以及处理单元，耦合到前端并且被配置为确定所述光信号中的最佳匹配色散（CD）估计 通过基于多个数字信号的信号峰值优化成本函数来获得光信号。

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

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： ZAMANI, Mahdi ,  MITRA, Jeebak ,  NAJAFI, Hossein ,  ZHANG, Zhuhong ,  LI, Chuandong

IPC: H04B10/60

CPC classification number: H04B10/616 ,  H04B10/548 ,  H04B10/5561 ,  H04B10/613 ,  H04B10/614

Abstract: 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.

Abstract translation: 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。

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

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： ZAMANI, Mahdi ,  AHARONY, Ahikam ,  ZHANG, Zhuhong ,  LI, Chuandong ,  HOU, Weikun

IPC: H04B1/02 ,  H04B17/00

CPC classification number: H04B1/40 ,  H04L27/0014 ,  H04L27/32

Abstract: 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.

Abstract translation: 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。

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

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： CHEN, Chen ,  ZAMANI, Mahdi ,  ZHANG, Zhuhong ,  LI, Chuandong

IPC: H04L27/28 ,  H04B1/38

CPC classification number: H04B10/2507 ,  H04B10/2575 ,  H04B10/40 ,  H04B10/506 ,  H04B10/516 ,  H04B10/541 ,  H04B10/548 ,  H04B10/556 ,  H04B10/697 ,  H04L5/0046

Abstract: 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.

Abstract translation: 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。