WO2015188517A1 - 一种相位偏差的补偿方法及装置 - Google Patents
一种相位偏差的补偿方法及装置 Download PDFInfo
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- WO2015188517A1 WO2015188517A1 PCT/CN2014/087402 CN2014087402W WO2015188517A1 WO 2015188517 A1 WO2015188517 A1 WO 2015188517A1 CN 2014087402 W CN2014087402 W CN 2014087402W WO 2015188517 A1 WO2015188517 A1 WO 2015188517A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/61—Coherent receivers
- H04B10/616—Details of the electronic signal processing in coherent optical receivers
- H04B10/6165—Estimation of the phase of the received optical signal, phase error estimation or phase error correction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0044—Control loops for carrier regulation
- H04L2027/0063—Elements of loops
- H04L2027/0067—Phase error detectors
Definitions
- a first determining module configured to determine a first phase difference between the first training sequence and the standard training sequence for reference, and a second phase difference between the second training sequence and the standard training sequence;
- a second determining module configured to determine, according to the first phase difference and the second phase difference, a sub-data sequence that needs phase compensation in a plurality of sub-data sequences constituting the data sequence;
- a calculating module configured to calculate, by using the first phase difference and the second phase difference, a phase compensation value corresponding to the sub-data sequence that needs to be phase-compensated;
- the compensation module is configured to perform phase compensation on the sub-data sequence that needs to be phase-compensated by using a phase compensation value corresponding to the sub-data sequence.
- the second determining module specifically includes:
- a first determining submodule configured to determine only subdata located in a second half of the data sequence if the first phase difference ⁇ first threshold value and
- the second determining submodule is configured to determine that all sub-data sequences of the data sequence require phase compensation if the first phase difference > the first threshold.
- the computing module specifically includes:
- Calculating a submodule configured to calculate a first compensation value corresponding to the first phase difference and a second phase compensation value corresponding to the second phase difference
- a third determining submodule configured to be a sub-data sequence located in the second half of the data sequence if the first phase difference ⁇ first threshold value and
- the compensation value is determined as the second compensation value
- a fifth determining submodule configured to determine a compensation value of all sub-data sequences of the data sequence if the first phase difference > the first threshold, and the second phase difference - the first phase difference
- a quantization unit configured to quantize a phase difference between the first training sequence and the standard training sequence to obtain a first value having a phase; and quantize a phase difference between the second training sequence and the standard training sequence to obtain The second value of the phase;
- the quantizing unit comprises:
- a first determining subunit configured to determine a phase difference between each symbol in the first training sequence and a corresponding symbol in the standard sequence, to obtain a phase difference of each symbol in the first training sequence
- a second determining subunit configured to determine a phase difference between each symbol in the second training sequence and a corresponding symbol in the standard sequence, to obtain a phase difference of each symbol in the second training sequence
- a quantizing subunit configured to quantize a phase difference of each symbol in the first training sequence according to an Euler formula to obtain a first quantized value having a phase of each symbol in the first training sequence, and according to an Euler formula And quantizing a phase difference of each symbol in the second training sequence to obtain a second quantized value having a phase of each symbol in the second training sequence;
- a calculation subunit is arranged to calculate an average of all of the first quantized values, to obtain the first value having a phase, and to calculate an average of all of the second quantized values to obtain the second value having a phase.
- 1 is a schematic diagram showing phase ambiguity in a middle portion of a conventional data sequence
- 3 and 4 are structural diagrams of a data sequence and a training sequence when specifically implementing the compensation method of phase deviation in the present invention
- FIG. 5 is a schematic flow chart of implementing phase compensation in the first implementation manner of the present invention.
- FIG. 6 is a structural comparison diagram of a data signal transmitted by using the phase deviation compensation method of the present invention and the compensation method using the existing phase deviation;
- Fig. 7 is a schematic structural view of a phase deviation compensating device in the present invention.
- Step 11 determining a first phase difference between the first training sequence and the standard training sequence for reference, and a second phase difference between the second training sequence and the standard training sequence;
- Step 12 Determine, according to the first phase difference and the second phase difference, a sub-data sequence that needs phase compensation in a plurality of sub-data sequences constituting the data sequence;
- Step 14 Perform phase compensation on the sub-data sequence that needs to be phase-compensated by using a phase compensation value corresponding to the sub-data sequence.
- the data sequence B composed of a plurality of sub-data sequences is divided into a first half B1 and a second half B2.
- the phase difference between the first training sequence A and the standard training sequence is a first phase difference
- the phase difference between the second training sequence C and the standard training sequence is a second phase difference.
- Step 121 if the first phase difference ⁇ first threshold, and
- Step 122 If the first phase difference > the first threshold, determine that all sub-data sequences of the data sequence need to be phase compensated.
- step 121 and step 122 when the first phase difference ⁇ the first threshold value, it indicates that the phase of the first training sequence A is out of phase with the standard training sequence to the extent permitted, and it is determined that the first training sequence is close to the first training sequence.
- the sub-data sequence B1 of the first half of A does not need to be phase corrected. If at this time, the second phase difference - the first phase difference
- the phase difference is large, which also means that the phase of the second training sequence C has a large difference from the phase of the standard training sequence, and it is determined that the sub-data sequence B2 close to the second half of the second training sequence C requires phase correction.
- the sub-data sequence B1 of the first half has a phase deviation.
- the sub-data sequence B2 of the latter half is likely to have a phase deviation, so all sub-data are considered. Phase compensation is required for the sequence.
- the method specifically includes:
- Step 131 Calculate a first compensation value corresponding to the first phase difference and a second phase compensation value corresponding to the second phase difference; that is, the first compensation value is phase compensation of the first training sequence A and the standard training sequence a value, the first compensation value is a phase compensation value of the first training sequence B and the standard training sequence;
- Step 132 if the first phase difference ⁇ first threshold value, and
- Step 134 if the first phase difference > the first threshold, and the second phase difference - the first phase difference
- FIG. 4 is a schematic flow chart of actually implementing the above steps 13 and 14.
- the compensation value corresponding to B2 is more likely to be the second compensation value corresponding to the second training sequence C that is close thereto.
- the current half of the sub-data sequence B1 requires phase correction, two cases occur. One is that the phase of the whole data sequence B has phase ambiguity, and the phase deviation of B1 is far from the phase difference of B2. At this time, B1 is phase corrected according to the first compensation value, and B2 is corrected according to the second compensation value. .
- the segment data sequence B may be phase corrected according to the first compensation value.
- the implementation may determine whether B1 needs phase correction only by the first phase difference, and whether B2 needs to be compensated only by the second phase difference.
- B1 is compensated according to the first compensation value.
- B2 is compensated according to the second compensation value.
- the corresponding compensation value is the first compensation value calculated according to the first phase difference
- the corresponding compensation value is the second compensation value calculated according to the second phase difference
- step 13 specifically includes:
- Step 132 Calculate the first compensation value according to the first value and a preset ideal constellation point, and calculate the second phase compensation value according to the second value and the preset ideal constellation point.
- Steps 131 and 131 are described below in conjunction with a specific embodiment.
- phase of each symbol of the standard training sequence referenced by the transmitting end in the transmission signal is n, n+1, ..., n+p-1 are the valid serial numbers of each symbol in the standard training sequence.
- the phase of each symbol of the first training sequence received by the receiving end is The phase of each symbol of the second training sequence received thereafter is:
- the Euler's formula is a commonly used method in the field of mathematics, and the quantized value still inherits the phase.
- S ⁇ 1 is taken as the quantized ⁇ 1
- S ⁇ 2 is taken as the quantized ⁇ 2.
- the Euler formula is used in advance. For ⁇ 1 and ⁇ 2 quantization, the order in which the quantization steps are performed does not change the result of the final first compensation value and the second compensation value.
- an embodiment of the present invention further provides a phase deviation compensation apparatus, which is applied to a data sequence between a first training sequence and a second training sequence received by a receiving end, as shown in FIG. 7, and includes:
- a first determining submodule configured to determine only subdata located in a second half of the data sequence if the first phase difference ⁇ first threshold value and
- the first phase difference ⁇ the first threshold value it indicates that the phase of the first training sequence A and the phase of the standard training sequence are within the allowable degree, and it is determined that it is close to the first half of the first training sequence A.
- the sub-data sequence B1 does not need to perform phase correction. If at this time, the second phase difference - the first phase difference
- computing module specifically includes:
- Calculating a submodule configured to calculate a first compensation value corresponding to the first phase difference and a second phase compensation value corresponding to the second phase difference
- a third determining submodule configured to be a sub-data sequence located in the second half of the data sequence if the first phase difference ⁇ first threshold value and
- the compensation value is determined as the second compensation value
- a fourth determining submodule configured to: if the first phase difference > the first threshold, and the second phase difference - the first phase difference
- a fifth determining submodule configured to determine a compensation value of all sub-data sequences of the data sequence if the first phase difference > the first threshold, and the second phase difference - the first phase difference
- B1 needs Phase correction
- the phase of B2 is not much different from the phase of B1, indicating that a phase deviation across the B1 and B2 regions occurs in the entire data sequence B.
- a compensation value can be used for phase correction.
- the calculating sub-module specifically includes:
- a calculating unit configured to calculate the first compensation value according to the first value and a preset ideal constellation point, and calculate the second phase compensation value according to the second value and the preset ideal constellation point .
- the quantizing unit specifically includes:
- a first determining subunit configured to determine a phase difference between each symbol in the first training sequence and a corresponding symbol in the standard sequence, to obtain a phase difference of each symbol in the first training sequence
- a second determining subunit configured to determine a phase difference between each symbol in the second training sequence and a corresponding symbol in the standard sequence, to obtain a phase difference of each symbol in the second training sequence
- a quantizing subunit configured to quantize a phase difference of each symbol in the first training sequence according to an Euler formula to obtain a first quantized value having a phase of each symbol in the first training sequence, and according to an Euler formula And quantizing a phase difference of each symbol in the second training sequence to obtain a second quantized value having a phase of each symbol in the second training sequence;
- a calculation subunit is arranged to calculate an average of all of the first quantized values, to obtain the first value having a phase, and to calculate an average of all of the second quantized values to obtain the second value having a phase.
- the compensating device of the present embodiment corresponds to the compensating method of the present invention.
- the technical effect of the compensation method can also be achieved by the compensation device of the embodiment.
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Abstract
Description
Claims (10)
- 一种相位偏差的补偿方法,应用于接收端所接收到的第一训练序列与第二训练序列之间的数据序列,包括:确定出第一训练序列与用于参照的标准训练序列之间的第一相位差,以及第二训练序列与标准训练序列之间的第二相位差;根据所述第一相位差和第二相位差确定组成所述数据序列的多个子数据序列中需要进行相位补偿的子数据序列;利用所述第一相位差和第二相位差计算需要进行相位补偿的子数据序列对应的相位补偿值;利用子数据序列对应的相位补偿值对所述需要进行相位补偿的子数据序列进行相位补偿。
- 根据权利要求1所述的补偿方法,其中,根据所述第一相位差和第二相位差确定组成所述数据序列的多个子数据序列是否需要进行相位补偿具体包括:若第一相位差<第一阈值,且|第二相位差-第一相位差|>第二阈值,则只确定位于所述数据序列的后半段的子数据序列需要进行相位补偿;若第一相位差>第一阈值,则确定所述数据序列的所有子数据序列均需要进行相位补偿。
- 根据权利要求1所述的补偿方法,其中,利用所述第一相位差和第二相位差计算需要进行相位补偿的子数据序列对应的相位补偿值具体包括:计算出对应所述第一相位差的第一补偿值以及对应所述第二相位差的第二相位补偿值;若第一相位差<第一阈值,且|第二相位差-第一相位差|>第二阈值,则将位于所述数据序列的后半段的子数据序的补偿值确定为第二补偿值;若第一相位差>第一阈值,且|第二相位差-第一相位差|>第二阈值,则将位于所述数据序列的前半段的子数据序的补偿值确定为第一补偿值,并将位于所述数据序列的后半段的子数据序的补偿值确定为第二补偿值;若第一相位差>第一阈值,且|第二相位差-第一相位差|<第二阈值,则将所述数据序列的所有子数据序列的补偿值确定为第一补偿值。
- 根据权利要求3所述的补偿方法,其中,计算出对应所述第一相位差的第一补偿值以及对应所述第二相位差的第二补偿值具体包括:将所述第一训练序列与标准训练序列的相位差进行量化,得到具有相位的第一数值;以及将所述第二训练序列与标准训练序列的相位差进行量化,得到具有相位的第二数值;根据所述第一数值以及预设理想星座点计算出所述第一补偿值,以及根据所述第二数值以及所述预设理想星座点计算出所述第二相位补偿值。
- 根据权利要求4所述的补偿方法,其中,将所述第一训练序列与标准训练序列的相位差进行量化,得到具有相位的第一数值;以及将所述第二训练序列与标准训练序列的相位差进行量化,得到具有相位的第二数值具体包括:确定第一训练序列中每个符号与标准序列中相对应的符号的相位差,得到所述第一训练序列中每个符号的相位差;确定第二训练序列中每个符号与标准序列中相对应的符号的相位差,得到所述第二训练序列中每个符号的相位差;根据欧拉公式将所述第一训练序列中每个符号的相位差进行量化,得到第一训练序列中每个符号的具有相位的第一量化值,以及根据欧拉公式将所述第二训练序列中每个符号的相位差进行量化,得到第二训练序列中每个符号的具有相位的第二量化值;计算所有第一量化值的均值,得到具有相位的所述第一数值,以及计算所有第二量化值的均值,得到具有相位的所述第二数值。
- 一种相位偏差的补偿装置,应用于接收端所接收到的第一训练序列与第二训练序列之间的数据序列,包括:第一确定模块,设置为确定出第一训练序列与用于参照的标准训练序列之间的第一相位差,以及第二训练序列与标准训练序列之间的第二相位差;第二确定模块,设置为根据所述第一相位差和第二相位差确定组成所述数据序列的多个子数据序列中需要进行相位补偿的子数据序列;计算模块,设置为利用所述第一相位差和第二相位差计算需要进行相位补偿的子数据序列对应的相位补偿值;补偿模块,设置为利用子数据序列对应的相位补偿值对所述需要进行相位补偿的子数据序列进行相位补偿。
- 根据权利要求6所述的补偿装置,其中,所述第二确定模块包括:第一确定子模块,设置为若第一相位差<第一阈值,且|第二相位差-第一相位差|>第二阈值,则只确定位于所述数据序列的后半段的子数据序列需要进行相位补偿;第二确定子模块,设置为若第一相位差>第一阈值,则确定所述数据序列的所有子数据序列均需要进行相位补偿。
- 根据权利要求6所述的补偿装置,其中,所述计算模块包括:计算子模块,设置为计算出对应所述第一相位差的第一补偿值以及对应所述第二相位差的第二相位补偿值;第三确定子模块,设置为若第一相位差<第一阈值,且|第二相位差-第一相位差|>第二阈值,则将位于所述数据序列的后半段的子数据序的补偿值确定为第二补偿值;第四确定子模块,设置为若第一相位差>第一阈值,且|第二相位差-第一相位差|>第二阈值,则将位于所述数据序列的前半段的子数据序的补偿值确定为第一补偿值,并将位于所述数据序列的后半段的子数据序的补偿值确定为第二补偿值;第五确定子模块,设置为若第一相位差>第一阈值,且|第二相位差-第一相位差|<第二阈值,则将所述数据序列的所有子数据序列的补偿值确定为第一补偿值。
- 根据权利要求8所述的补偿装置,其中,所述计算子模块包括:量化单元,设置为将所述第一训练序列与标准训练序列的相位差进行量化,得到具有相位的第一数值;以及将所述第二训练序列与标准训练序列的相位差进行量化,得到具有相位的第二数值;计算单元,设置为根据所述第一数值以及预设理想星座点计算出所述第一补偿值,以及根据所述第二数值以及所述预设理想星座点计算出所述第二相位补偿值。
- 根据权利要求9所述的补偿装置,其中,所述量化单元包括:第一确定子单元,设置为确定第一训练序列中每个符号与标准序列中相对应的符号的相位差,得到所述第一训练序列中每个符号的相位差;第二确定子单元,设置为确定第二训练序列中每个符号与标准序列中相对应的符号的相位差,得到所述第二训练序列中每个符号的相位差;量化子单元,设置为根据欧拉公式将所述第一训练序列中每个符号的相位差进行量化,得到第一训练序列中每个符号的具有相位的第一量化值,以及根据欧拉公式将所述第二训练序列中每个符号的相位差进行量化,得到第二训练序列中每个符号的具有相位的第二量化值;计算子单元,设置为计算所有第一量化值的均值,得到具有相位的所述第一数值,以及计算所有第二量化值的均值,得到具有相位的所述第二数值。
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US15/318,190 US9954621B2 (en) | 2014-06-12 | 2014-09-25 | Method and device for compensating phase deviation |
ES14894520T ES2699890T3 (es) | 2014-06-12 | 2014-09-25 | Procedimiento y dispositivo para compensar una desviación de fase |
JP2016572462A JP6400127B2 (ja) | 2014-06-12 | 2014-09-25 | 位相偏差の補償方法及び装置 |
EP14894520.7A EP3145112B1 (en) | 2014-06-12 | 2014-09-25 | Method and device for compensating phase deviation |
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CN108667522B (zh) * | 2017-03-30 | 2020-12-11 | 深圳市中兴微电子技术有限公司 | 一种实现相位跳变检测与纠正的方法及装置 |
CN108288255B (zh) * | 2018-01-26 | 2022-02-18 | 中国科学院广州生物医药与健康研究院 | 一种相位恢复方法、装置及系统 |
CN108572591B (zh) * | 2018-04-18 | 2021-01-22 | 中国神华能源股份有限公司 | 铁路电气系统相位恒差控制方法及系统 |
CN110601762A (zh) * | 2019-09-18 | 2019-12-20 | 成都同相科技有限公司 | 一种实现相位噪声补偿的射频信号传输方法及传输系统 |
CN110768918B (zh) * | 2019-10-31 | 2020-08-18 | 成都同相科技有限公司 | 一种实现相位噪声补偿的自由空间微波信号传输方法及传输系统 |
CN116299615B (zh) * | 2022-12-15 | 2023-11-03 | 长安大学 | 一种实现单北斗实时ppp模糊固定的相位偏差估计方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090129514A1 (en) * | 2007-11-19 | 2009-05-21 | Horizon Semiconductors Ltd. | Accurate data-aided frequency tracking circuit |
CN101553028A (zh) * | 2009-04-30 | 2009-10-07 | 西南交通大学 | Td-scdma通信系统接收同步中基于差分相位的频偏与相位估计方法 |
CN103259756A (zh) * | 2013-04-19 | 2013-08-21 | 东南大学 | 一种应用于ofdm系统的符号定时同步和载波同步方法 |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3172198B2 (ja) * | 1991-03-01 | 2001-06-04 | 株式会社東芝 | 等化方式 |
DE19747457C2 (de) * | 1997-10-27 | 2000-04-06 | Siemens Ag | Verfahren und Anordnung zur Übertragung von Daten über eine Funkschnittstelle in einem Funk-Kommunikationssystem |
JP3997890B2 (ja) * | 2001-11-13 | 2007-10-24 | 松下電器産業株式会社 | 送信方法及び送信装置 |
SG108861A1 (en) * | 2002-07-18 | 2005-02-28 | Oki Techno Ct Singapore Pte | High rate receiver |
US7209670B2 (en) * | 2003-04-29 | 2007-04-24 | Nortel Networks Limited | Polarization diversity receiver for optical transmission system |
US7539501B2 (en) * | 2003-11-24 | 2009-05-26 | Broadcom Corporation | High data throughput wireless local area network receiver |
CN100352170C (zh) * | 2004-04-19 | 2007-11-28 | 中兴通讯股份有限公司 | 时分复用无线通信系统频率校正的装置和方法 |
US7706696B2 (en) * | 2006-05-19 | 2010-04-27 | Alcatel-Lucent Usa Inc. | Pilot tone bias control |
WO2008007846A1 (en) * | 2006-07-11 | 2008-01-17 | Lg Electronics Inc. | Channel equarlizing method and apparatus, and receiving system |
CN101277288A (zh) * | 2007-03-30 | 2008-10-01 | 中兴通讯股份有限公司 | 正交频分复用系统的频率同步方法 |
CN101599801B (zh) * | 2008-06-06 | 2012-02-22 | 富士通株式会社 | 滤波器系数调整装置和方法 |
CN101621335B (zh) * | 2008-07-01 | 2012-05-30 | 富士通株式会社 | 平均长度自适应优化方法和装置 |
US8432961B2 (en) * | 2009-06-11 | 2013-04-30 | Lg Electronics Inc. | Transmitting/receiving system and method of processing broadcast signal in transmitting/receiving system |
US8489961B2 (en) * | 2009-10-19 | 2013-07-16 | Lg Electronics Inc. | Transmitting system and method of processing digital broadcast signal in transmitting system, receiving system and method of receiving digital broadcast signal in receiving system |
JP2011130333A (ja) * | 2009-12-21 | 2011-06-30 | Fujitsu Ltd | 巡回冗長検査符号生成回路及び巡回冗長検査符号生成方法 |
US8315528B2 (en) * | 2009-12-22 | 2012-11-20 | Ciena Corporation | Zero mean carrier recovery |
US8705956B2 (en) * | 2010-04-14 | 2014-04-22 | Nec Laboratories America, Inc. | Carrier frequency offset (CFO) estimator with low complexity and high accuracy for orthogonal-frequency-division-multiplexing (CO-OFDM) systems |
WO2012118215A1 (ja) * | 2011-03-02 | 2012-09-07 | 日本電気株式会社 | 光受信器、偏波分離装置、および光受信方法 |
US9100085B2 (en) * | 2011-09-21 | 2015-08-04 | Spatial Digital Systems, Inc. | High speed multi-mode fiber transmissions via orthogonal wavefronts |
JP2013106085A (ja) * | 2011-11-10 | 2013-05-30 | Kyocera Corp | デジタル無線受信装置およびデジタル無線受信方法 |
KR20140029833A (ko) * | 2012-08-30 | 2014-03-11 | 한국전자통신연구원 | 통신 시스템에서 데이터 수신 장치 및 방법 |
US9071327B2 (en) * | 2012-11-27 | 2015-06-30 | Gilat Satellite Networks Ltd. | Efficient frequency estimation |
EP3081969B1 (en) * | 2013-12-27 | 2018-02-21 | Huawei Technologies Co., Ltd. | Optical signal control method, and optical switch matrix control method and device |
CN105450295B (zh) * | 2014-07-09 | 2018-09-11 | 富士通株式会社 | 监测光信噪比的装置、发射机和通信系统 |
-
2014
- 2014-06-12 CN CN201410260927.9A patent/CN105227500B/zh active Active
- 2014-09-25 EP EP14894520.7A patent/EP3145112B1/en active Active
- 2014-09-25 ES ES14894520T patent/ES2699890T3/es active Active
- 2014-09-25 US US15/318,190 patent/US9954621B2/en active Active
- 2014-09-25 WO PCT/CN2014/087402 patent/WO2015188517A1/zh active Application Filing
- 2014-09-25 JP JP2016572462A patent/JP6400127B2/ja active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090129514A1 (en) * | 2007-11-19 | 2009-05-21 | Horizon Semiconductors Ltd. | Accurate data-aided frequency tracking circuit |
CN101553028A (zh) * | 2009-04-30 | 2009-10-07 | 西南交通大学 | Td-scdma通信系统接收同步中基于差分相位的频偏与相位估计方法 |
CN103259756A (zh) * | 2013-04-19 | 2013-08-21 | 东南大学 | 一种应用于ofdm系统的符号定时同步和载波同步方法 |
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EP3145112A1 (en) | 2017-03-22 |
CN105227500A (zh) | 2016-01-06 |
US9954621B2 (en) | 2018-04-24 |
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EP3145112A4 (en) | 2017-05-31 |
JP2017523664A (ja) | 2017-08-17 |
CN105227500B (zh) | 2019-10-18 |
EP3145112B1 (en) | 2018-09-05 |
ES2699890T3 (es) | 2019-02-13 |
EP3145112A9 (en) | 2017-06-07 |
US20170134098A1 (en) | 2017-05-11 |
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