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1. 发明申请

WO2010115263A1 CLOCK RECOVERY WITH CHANNEL COEFFICIENTS 审中-公开
标题翻译：时钟恢复与通道系数
公开(公告)号：WO2010115263A1
公开(公告)日：2010-10-14
申请号：PCT/CA2010/000461
申请日：2010-04-01
申请人： NORTEL NETWORKS LIMITED , SUN, Han , WU, Kuang Tsan , ROBERTS, Kim B.
发明人： SUN, Han , WU, Kuang Tsan , ROBERTS, Kim B.
IPC分类号： H04L7/033 , H04B10/18
CPC分类号： H03L7/0812 , H04B10/695 , H04L7/0087 , H04L7/0278
摘要： In a coherent optical receiver of an optical communications network, a method of recovering a clock signal from a high speed optical signal received through an optical link. A set of compensation vectors are adaptively computed for compensating Inter-symbol Interference (ISI) due to at least polarization impairments of the optical signal. A channel delay is estimated based on the computed compensation vectors. The estimated channel delay is subtracted from the computed compensation vectors to generate corresponding modified compensation vectors. Finally, the modified compensation vectors are used to derive a recovered clock signal.
摘要翻译：在光通信网络的相干光接收机中，从通过光链路接收的高速光信号中恢复时钟信号的方法。自适应地计算一组补偿矢量，用于补偿因至少光学信号的偏振损伤而引起的符号间干扰（ISI）。基于所计算的补偿向量来估计信道延迟。从所计算的补偿向量中减去估计的信道延迟，以产生相应的修改的补偿向量。最后，修正的补偿向量用于导出恢复的时钟信号。

2. 发明申请

WO2010063092A1 CYCLE SLIP LOCATION AND CORRECTION 审中-公开
标题翻译：循环滑动位置和校正
公开(公告)号：WO2010063092A1
公开(公告)日：2010-06-10
申请号：PCT/CA2009/001604
申请日：2009-11-12
申请人： NORTEL NETWORKS LIMITED , HARLEY, James , ROBERTS, Kim, B. , SUN, Han
发明人： HARLEY, James , ROBERTS, Kim, B. , SUN, Han
IPC分类号： H04B10/18 , H04B10/148
CPC分类号： H03M13/336 , H03M13/333 , H04B10/611 , H04B10/6164
摘要： Methods and techniques are disclosed for correcting the effect of cycle slips in a coherent communications system A signal comprising SYNC bursts having a predetermined periodicity and a plurality of known symbols at predetermined locations between successive SYNC bursts is received The received signal is partitioned into data blocks Each data block encompasses at least data symbols and a set of check symbols corresponding to the plurality of known symbols at predetermined locations between a respective pair of successive SYNC bursts in the signal Each data block is processed to detect a cycle slip When a cycle slip is detected, the set of check symbols of the data block are examined to identify a first slipped check symbol, and a phase correction applied to data symbols of the data block lying between the first slipped check symbol and an end of the data block.
摘要翻译：公开了用于校正相干通信系统中的周期滑移的影响的方法和技术。接收信号被分割成数据块。每个信号被分成数据块数据块至少包含数据符号和对应于多个已知符号的一组检查符号，该信号在信号中相应的连续SYNC脉冲串之间的预定位置处被处理以检测周期滑移当检测到周期滑移时检查数据块的校验符号集合以识别第一滑动校验符号，以及应用于位于第一滑动校验符号和数据块的结尾之间的数据块的数据符号的相位校正。

3. 发明申请

WO2004016037A1 METHOD OF INCREASING SPEECH INTELLIGIBILITY AND DEVICE THEREFOR 审中-公开
标题翻译：增加语音智能的方法及其设备
公开(公告)号：WO2004016037A1
公开(公告)日：2004-02-19
申请号：PCT/SG2002/000182
申请日：2002-08-13
申请人： NANYANG TECHNOLOGICAL UNIVERSITY , CHEN, Jian, Feng , YU, Zhu, Liang , SONG, Ying , SUN, Han, Wu
发明人： CHEN, Jian, Feng , YU, Zhu, Liang , SONG, Ying , SUN, Han, Wu
IPC分类号： H04R1/40
CPC分类号： H04R1/1083 , G02C11/00 , G10L2021/065 , H04M1/6058 , H04R1/1066 , H04R5/033 , H04R25/402 , H04R25/405 , H04R25/407 , H04R2410/05 , H04R2430/20
摘要： An array of miniature microphones is embedded in the upper edge of a spectacle frame while earphones are affixed to the temple bars. A preferred embodiment includes a variable step-size adaptive beam-forming algorithm used with the microphone array for high performance noise reduction. Additionally, the embodiment employs signal processing technology to reduce residual noise to improve the signal to noise ratio further and improve the intelligibility of the desired signal. Optionally, active noise control (ANC) technology is used in the earphone as noise shield. The ANC module further suppresses the ambient noise and guarantees high fidelity sound reproduction.
摘要翻译：一组微型麦克风嵌入眼镜架的上边缘，而耳机固定在镜腿上。优选实施例包括与用于高性能噪声降低的麦克风阵列一起使用的可变步长自适应波束形成算法。此外，本实施例采用信号处理技术来减少残余噪声，进一步提高信噪比，并提高所需信号的可懂度。可选地，在耳机中使用主动噪声控制（ANC）技术作为噪声屏蔽。 ANC模块进一步抑制环境噪声并保证高保真度的声音再现。

4. 发明申请

WO2020214330A1 SYNCHRONIZATION FOR SUBCARRIER COMMUNICATION 审中-公开
公开(公告)号：WO2020214330A1
公开(公告)日：2020-10-22
申请号：PCT/US2020/023871
申请日：2020-03-20
申请人： SUN, Han H. , WU, Kuang-Tsan , MCNICOL, John D.
发明人： SUN, Han H. , WU, Kuang-Tsan , MCNICOL, John D.
IPC分类号： H04B10/40 , H04B10/61 , H04J14/02 , H04L7/00 , H04B10/50 , H04L7/033
摘要： Methods, systems, and apparatus, including computer programs encoded on computer storage media, for clock synchronizing an optical system and multiple leaf systems. In some implementations, an apparatus includes a receiver comprising: a local oscillator laser providing a local oscillator signal, a detector circuit operable to receive a first optical signal and detect first data carried by the first optical signal based on the local oscillator signal, a reference clock circuit supplying a clock signal, a digital signal processor (DSP) operable to receive the first data and supply a control signal to the reference clock circuit based on the first data, the reference clock circuit being operable to adjust the clock signal based on the control signal; and a transmitter operable to output a second optical signal carrying second data, the second data having an associated rate that is based on the clock signal.

5. 发明申请

WO2010033402A1 OPTICAL TRANSMITTER ERROR REDUCTION USING RECEIVER FEEDBACK 审中-公开
标题翻译：使用接收器反馈的光传输器误差减少
公开(公告)号：WO2010033402A1
公开(公告)日：2010-03-25
申请号：PCT/US2009/056199
申请日：2009-09-08
申请人： NORTEL NETWORKS LIMITED , SUN, Han , WU, Kuang-Tsan , ROBERTS, Kim B.
发明人： SUN, Han , WU, Kuang-Tsan , ROBERTS, Kim B.
IPC分类号： H04B10/00
CPC分类号： H04B10/0799
摘要： Described is a method of reducing transmitter error in an optical communications channel. An optical signal transmitted from an optical transmitter that has impairment due to transmitter error is processed to generate a digitally-equalized signal. A nonlinear characteristic of the digitally-equalized signal that relates to the transmitter error is determined. An optical control signal comprising data that are based on the nonlinear characteristic is transmitted to the optical transmitter. The optical transmitter modifies a transmitter parameter in response to the optical control signal to change the nonlinear characteristic and thereby reduce the impairment.
摘要翻译：描述了减少光通信信道中的发射机误差的方法。处理从发射机发生故障的光发射机发送的光信号，生成数字均衡信号。确定与发射机误差有关的数字均衡信号的非线性特性。包括基于非线性特性的数据的光控制信号被发送到光发射机。光发射机根据光控信号修改发射机参数，改变非线性特性，从而减少损伤。

6. 发明申请

WO2009100526A1 LOW CONVERSION RATE DIGITAL DISPERSION COMPENSATION 审中-公开
标题翻译：低转换率数字分辨率补偿
公开(公告)号：WO2009100526A1
公开(公告)日：2009-08-20
申请号：PCT/CA2009/000160
申请日：2009-02-12
申请人： NORTEL NETWORKS LIMITED , ROBERTS, Kim. B. , WU, Kuang Tsan , O'SULLIVAN, Maurice , SUN, Han
发明人： ROBERTS, Kim. B. , WU, Kuang Tsan , O'SULLIVAN, Maurice , SUN, Han
IPC分类号： H04B10/18
CPC分类号： H04B10/6161 , H04B10/60 , H04B10/611 , H04B10/6162 , H04B10/6971 , H04L27/2601 , H04L2025/03414 , H04L2025/03522
摘要： A method of suppressing effects of aliasing in a system for digitally processing a high speed signal having a symbol rate of 1/T. The high speed signal is sampled at a fractional multiple (N) of the symbol rate, wherein 1
摘要翻译：抑制用于数字处理符号率为1 / T的高速信号的系统中的混叠效应的方法。以符号率的分数倍（N）对高速信号进行采样，其中1

7. 发明申请

WO2007045071A1 CLOCK RECOVERY FROM AN OPTICAL SIGNAL RECEIVED THROUGH AN OPTICAL COMMUNICATIONS NETWORK 审中-公开
标题翻译：通过光通信网络接收的光信号的时钟恢复
公开(公告)号：WO2007045071A1
公开(公告)日：2007-04-26
申请号：PCT/CA2006/001459
申请日：2006-09-05
申请人： NORTEL NETWORKS LIMITED , SUN, Han , JOVANOVIC, Slobodan , WU, Kuang Tsan , BONTU, Chandra , ROBERTS, Kim B. , XU, Jianzhong
发明人： SUN, Han , JOVANOVIC, Slobodan , WU, Kuang Tsan , BONTU, Chandra , ROBERTS, Kim B. , XU, Jianzhong
IPC分类号： H04L7/027 , H04B10/02
CPC分类号： H04L7/0004 , H03L7/085 , H03L7/0891 , H04L7/0278
摘要： A method of recovering a clock signal from an optical signal received through an optical communications system. A digital sample stream is processed to generate a dispersion compensated signal. The dispersion compensated signal is then tapped to obtain upper side band and lower side band signals of each received polarization of the optical signal. The upper side band and lower side band signals are then processed to compensate polarization dependent impairments, and the clock recovered from the resulting optimized.
摘要翻译：一种从通过光通信系统接收的光信号中恢复时钟信号的方法。处理数字样本流以产生色散补偿信号。然后分散色散补偿信号以获得光信号的每个接收极化的上边带和下边带信号。然后处理上边带和下边带信号以补偿偏振相关损伤，并且从所得优化中恢复时钟。

8. 发明申请

WO2007045070A1 EFFICIENT DATA TRANSMISSION AND TRAINING OF DATA PROCESSING FUNCTIONS 审中-公开
标题翻译：有效的数据传输和数据处理功能的培训
公开(公告)号：WO2007045070A1
公开(公告)日：2007-04-26
申请号：PCT/CA2006/001458
申请日：2006-09-05
申请人： NORTEL NETWORKS LIMITED , BONTU, Chandra , WU, Kuang Tsan , MCNICOL, John , ROBERTS, Kim B. , SUN, Han
发明人： BONTU, Chandra , WU, Kuang Tsan , MCNICOL, John , ROBERTS, Kim B. , SUN, Han
IPC分类号： H04L7/04 , H04B10/02
CPC分类号： H04J3/0608 , H04J14/06 , H04L7/027 , H04L7/0278 , H04L7/048
摘要： A method of a conveying data through an optical communications system. An optical signal is received through the optical communication system, the optical signal comprising data symbols and SYNC bursts, each SYNC burst having a predetermined symbol sequence. The received optical signal is oversampled to generate a multi-bit sample stream. The sample stream is partitioned into blocks of contiguous samples, wherein each block of samples partially overlaps at least one other block of samples and encompasses at least one SYNC burst and a plurality of data symbols. Each block of samples is independently processed to detect a value of each data symbol.
摘要翻译：一种通过光通信系统传送数据的方法。通过光通信系统接收光信号，光信号包括数据符号和SYNC脉冲串，每个SYNC脉冲串具有预定的符号序列。所接收的光信号被过采样以产生多比特采样流。样本流被划分成连续样本块，其中每个样本块与至少一个其他样本块部分重叠，并且包含至少一个SYNC突发和多个数据符号。每个样本块被独立地处理以检测每个数据符号的值。

9. 发明申请

WO2007045072A1 POLARIZATION COMPENSATION IN A COHERENT OPTICAL RECEIVER 审中-公开
标题翻译：相邻光接收机中的极化补偿
公开(公告)号：WO2007045072A1
公开(公告)日：2007-04-26
申请号：PCT/CA2006/001460
申请日：2006-09-05
申请人： NORTEL NETWORKS LIMITED , BONTU, Chandra , O'SULLIVAN, Maurice , ROBERTS, Kim B. , SUN, Han , WU, Kuang Tsan
发明人： BONTU, Chandra , O'SULLIVAN, Maurice , ROBERTS, Kim B. , SUN, Han , WU, Kuang Tsan
IPC分类号： H04B10/06 , H04B10/08 , H04B10/148
CPC分类号： H04B10/2572 , H04B10/60 , H04B10/6161 , H04B10/6162 , H04B10/64 , H04J14/06 , H04L7/041
摘要： A method of processing a stream of digital samples of an optical signal received by a coherent optical receiver. The digital sample stream is processed to generate a dispersion compensated sample stream. The dispersion compensated sample stream is then processed to compensate polarization dependent impairments of the optical signal.
摘要翻译：一种处理由相干光接收机接收的光信号的数字样本流的方法。数字样本流被处理以产生色散补偿样本流。然后处理色散补偿采样流以补偿光信号的偏振相关损伤。

10. 发明申请

WO2009070881A1 SIGNAL EQUALIZER IN A COHERENT OPTICAL RECEIVER 审中-公开
标题翻译：信号均衡器在一个相干的光接收器
公开(公告)号：WO2009070881A1
公开(公告)日：2009-06-11
申请号：PCT/CA2008/002118
申请日：2008-12-04
申请人： NORTEL NETWORKS LIMITED , ROBERTS, Kim, B. , SUN, Han
发明人： ROBERTS, Kim, B. , SUN, Han
IPC分类号： H04B10/18 , G06F17/14 , G06F17/15 , G06F17/16 , H04B10/06
CPC分类号： H04B10/6971 , H04B10/2569 , H04B10/2572 , H04B10/532 , H04B10/677
摘要： A signal equalizer for compensating impairments of an optical signal received through a link of a high speed optical communications network. At least one set of compensation vectors are computed for compensating at least two distinct types of impairments. A frequency domain processor is coupled to receive respective raw multi-bit in-phase (I) and quadrature (Q) sample streams of each received polarization of the optical signal. The frequency domain processor operates to digitally process the multi-bit sample streams, using the compensation vectors, to generate multi-bit estimates of symbols modulated onto each transmitted polarization of the optical signal. The frequency domain processor exhibits respective different responses to each one of the at least two distinct types of impairments.
摘要翻译：一种信号均衡器，用于补偿通过高速光通信网络的链路接收的光信号的损伤。计算至少一组补偿向量以补偿至少两种不同类型的损伤。频域处理器被耦合以接收光信号的每个接收极化的相应的原始多位同相（I）和正交（Q）采样流。频域处理器操作以使用补偿矢量对多位采样流进行数字处理，以产生调制到光信号的每个透射偏振上的符号的多位估计。所述频域处理器对所述至少两种不同类型的损伤中的每一种表现出相应的不同响应。

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