专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20140003485A1 ON-THE-FLY COMPENSATION OF SAMPLING FREQUENCY AND PHASE OFFSET IN RECEIVER PERFORMING ULTRA-HIGH-SPEED WIRELESS COMMUNICATION 有权
标题翻译：接收机执行超高速无线通信的采样频率和相位偏移的实时补偿
公开(公告)号：US20140003485A1
公开(公告)日：2014-01-02
申请号：US14004333
申请日：2012-03-02
申请人： Yasunao Katayama , Yasuteru Kohda , Daiju Nakano
发明人： Yasunao Katayama , Yasuteru Kohda , Daiju Nakano
IPC分类号： H04L27/01
CPC分类号： H04L27/01 , H04L7/0029 , H04L7/10 , H04L25/03038 , H04L27/22 , H04L27/38 , H04L2025/03471 , H04L2025/03605 , H04L2025/03687
摘要： Received data oversampled twice is polyphased by the receiver, feedback is applied using an adaptive algorithm, and the filter coefficients (tap coefficient sequence) of a compensation filter are simultaneously shifted when the data shifts. The sampling frequency and the phase offset can be compensated for on the fly using a filter combining a tapped filter whose initial value is a correlation value obtained from the preamble and header of a received signal, and a wavefront aligner. In this configuration, a resampling filter circuit, an equalization filter circuit and a decimation filter circuit are realized in a single compensation filter circuit, which is much smaller than the prior art circuits in terms of size.
摘要翻译：接收到的二次采样数据由接收机多相接收，使用自适应算法应用反馈，并且当数据移位时，补偿滤波器的滤波器系数（抽头系数序列）同时移位。可以使用组合使用初始值是从接收信号的前同步码和报头获得的相关值的抽头滤波器和波前对准器来对采样频率和相位偏移进行补偿。在该配置中，在单个补偿滤波器电路中实现了重采样滤波器电路，均衡滤波器电路和抽取滤波器电路，其在尺寸方面比现有技术的电路小得多。

2. 发明授权

US08005161B2 Method, hardware product, and computer program product for performing high data rate wireless transmission 失效
标题翻译：用于执行高数据速率无线传输的方法，硬件产品和计算机程序产品
公开(公告)号：US08005161B2
公开(公告)日：2011-08-23
申请号：US12113251
申请日：2008-05-01
申请人： Yasunao Katayama , Daiju Nakano
发明人： Yasunao Katayama , Daiju Nakano
IPC分类号： H04L27/12 , H04L27/14
CPC分类号： H04L27/122 , H04L27/14 , H04L27/144
摘要： A method, a hardware product, and a computer program product for performing high data rate wireless transmission and reception. Minimum shift-keyed (MSK) data is transmitted by multiplexing a first MSK data stream and a second MSK data stream wherein the first MSK data stream is substantially 90-degree phase-shifted with respect to the second MSK data stream. The transmitted MSK data is received by performing phase recovery and demodulation using an FM discriminator having a demodulation circuit for implementing a 45-degree phase shift prior to demodulation.
摘要翻译：一种用于执行高数据速率无线传输和接收的方法，硬件产品和计算机程序产品。通过复用第一MSK数据流和第二MSK数据流来发送最小移位键控（MSK）数据，其中第一MSK数据流相对于第二MSK数据流基本上是90度相移。通过使用具有用于在解调之前实现45度相移的解调电路的FM鉴频器执行相位恢复和解调来接收所发送的MSK数据。

3. 发明申请

US20110075776A1 Method and circuit for digitally filtering a signal 有权
标题翻译：用于数字滤波信号的方法和电路
公开(公告)号：US20110075776A1
公开(公告)日：2011-03-31
申请号：US12924535
申请日：2010-09-29
申请人： Yasunao Katayama , Daiju Nakano , Kohji Takano
发明人： Yasunao Katayama , Daiju Nakano , Kohji Takano
IPC分类号： H04B1/10
CPC分类号： H04L27/34 , H04L25/0232
摘要： A method and circuit that gives a sequence pattern that represents directions of positive and negative transitions of the phase that continue over a predetermined number from a certain reference symbol to an adjoining next reference symbol; finds (heuristically) one or more interpolate symbols that meet conditions (such as standards for power spectra) of a predetermined frequency spectrum, i.e., band, and a predetermined (range of) amplitude with reference to the given sequence pattern; and stores the found sequence pattern and a phase value and an amplitude value corresponding to the found one or more interpolate symbols in a memory as a lookup table against the prepared memory area.
摘要翻译：一种方法和电路，其给出表示从某个参考符号到相邻的下一个参考符号在预定数目上继续的相位的正和负转变的方向的序列模式; 参考给定的序列模式，发现（启发式）一个或多个满足预定频谱（即，频带）和预定（幅度范围）的条件（诸如功率谱的标准）的内插符号; 并将所找到的序列模式和与所找到的一个或多个内插符号相对应的相位值和振幅值存储在存储器中作为针对准备好的存储器区域的查找表。

4. 发明申请

US20080022182A1 ENCODING AND DECODING METHOD FOR PACKET RECOVERY 失效
标题翻译：用于分组恢复的编码和解码方法
公开(公告)号：US20080022182A1
公开(公告)日：2008-01-24
申请号：US11773117
申请日：2007-07-03
申请人： Yasunao Katayama , Daiju Nakano
发明人： Yasunao Katayama , Daiju Nakano
IPC分类号： H03M13/00
CPC分类号： H03M13/2906 , H03M13/1515 , H03M13/29 , H03M13/373
摘要： The present invention discloses a Partially-Overlapped Block (POB) code used in a new encoding method. In this encoding method, a POB code is implemented by combining a plurality of different block codes so that the block codes partially overlap one another. A decoding method corresponding to this encoding method is also disclosed. In addition, disclosed is a method for recovering a plurality of packets by using a loss correction capability of this code. The present invention makes it possible to recover the larger number of packets than the number of added redundant packets per frame, by reusing redundant information of neighboring frames effectively, without increasing the asymptotic complexity of its decoding algorithm.
摘要翻译：本发明公开了一种在新的编码方法中使用的部分重叠块（POB）。在该编码方法中，通过组合多个不同的块码来实现POB码，使得块码部分重叠。还公开了与该编码方法对应的解码方法。此外，公开了通过使用该代码的损失校正能力来恢复多个分组的方法。本发明可以通过重复使用相邻帧的冗余信息而不增加其解码算法的渐近复杂度来恢复比每帧增加的冗余分组数更多的数据包。

5. 发明授权

US08391815B2 Radio receiver, radio communication system, radio communication method, and program 有权
标题翻译：无线电接收机，无线电通信系统，无线电通信方法和程序
公开(公告)号：US08391815B2
公开(公告)日：2013-03-05
申请号：US12947974
申请日：2010-11-17
申请人： Yasunao Katayama , Daiju Nakano
发明人： Yasunao Katayama , Daiju Nakano
IPC分类号： H04B1/04
CPC分类号： H04L7/042 , H04W88/02
摘要： A radio receiver including a sampling unit, a provider, an arithmetic operation unit, an estimator, and a converter. The sampling unit samples a baseband signal transmitted from the radio transmitter, at a fractional multiple of a symbol rate, and generates fractional-multiple-sampling data. The provider provides reference data in which the known symbol sequence arranged in a frame by the radio transmitter is interpolated at a rate of the fractional multiple. The arithmetic operation unit performs an arithmetic operation for evaluation data in which the degree of consistency in waveform between the fractional-multiple-sampling data and the reference data is evaluated. The estimator estimates a reference timing from a shift amount at which the evaluation data shows the maximum degree of consistency in waveform. The converter converts the fractional-multiple-sampling data by using the reference timing as a reference thereby recovering the data having the symbol rate.
摘要翻译：包括采样单元，提供者，算术运算单元，估计器和转换器的无线电接收机。采样单元以符号率的分数倍采样从无线电发射机发送的基带信号，并产生分数多采样数据。提供商提供参考数据，其中由无线电发射机布置在帧中的已知符号序列以小数倍数的速率被内插。算术运算单元对评价数据进行算术运算，其中评估分数 - 多采样数据与参考数据之间的波形的一致性程度。估计器从评估数据显示最大波形一致性的偏移量估计基准定时。转换器通过使用参考定时作为参考来转换分数多采样数据，从而恢复具有符号速率的数据。

6. 发明申请

US20090274221A1 METHOD, HARDWARE PRODUCT, AND COMPUTER PROGRAM PRODUCT FOR PERFORMING HIGH DATA RATE WIRELESS TRANSMISSION 失效
标题翻译：方法，硬件产品和用于执行高数据速率无线传输的计算机程序产品
公开(公告)号：US20090274221A1
公开(公告)日：2009-11-05
申请号：US12113251
申请日：2008-05-01
申请人： Yasunao Katayama , Daiju Nakano
发明人： Yasunao Katayama , Daiju Nakano
IPC分类号： H04L27/28
CPC分类号： H04L27/122 , H04L27/14 , H04L27/144
摘要： A method, a hardware product, and a computer program product for performing high data rate wireless transmission and reception. Minimum shift-keyed (MSK) data is transmitted by multiplexing a first MSK data stream and a second MSK data stream wherein the first MSK data stream is substantially 90-degree phase-shifted with respect to the second MSK data stream. The transmitted MSK data is received by performing phase recovery and demodulation using an FM discriminator having a demodulation circuit for implementing a 45-degree phase shift prior to demodulation.
摘要翻译：一种用于执行高数据速率无线传输和接收的方法，硬件产品和计算机程序产品。通过复用第一MSK数据流和第二MSK数据流来发送最小移位键控（MSK）数据，其中第一MSK数据流相对于第二MSK数据流基本上是90度相移。通过使用具有用于在解调之前实现45度相移的解调电路的FM鉴频器执行相位恢复和解调来接收所发送的MSK数据。

7. 发明授权

US08514987B2 Compensation for data deviation caused by frequency offset using timing correlation value 有权
标题翻译：使用定时相关值对由频率偏移引起的数据偏差进行补偿
公开(公告)号：US08514987B2
公开(公告)日：2013-08-20
申请号：US12974078
申请日：2010-12-21
申请人： Yasunao Katayama , Daiju Nakano
发明人： Yasunao Katayama , Daiju Nakano
IPC分类号： H04L27/06
CPC分类号： H04L27/0014 , H04L2027/0026 , H04L2027/0036 , H04L2027/0065
摘要： A method and circuitry for detecting a frequency offset (Δ) between data at a transmission symbol rate (fTx) transmitted from a transmitter and a reception sampling frequency (fRx) operating in a receiver on the basis of hard decision based on a binary number in the receiver. The receiver uses a converter to make binary hard decisions performs n times oversampling, then obtains a symbol decision value, calculates a timing correlation value for each plurality of partition phases, and calculates a cumulative timing correlation value for a specific period or number of additions. The receiver determines whether its sampling frequency is higher or lower than a correct symbol rate, appropriately shifts a sampling position, and makes reception while maintaining the correct sampling position thereby enables data deviation caused by a frequency offset to be compensated on the fly.
摘要翻译：一种方法和电路，用于基于从基于二进制数的硬判决来检测从发送器发送的发送符号率（fTx）的数据和在接收器中操作的接收采样频率（fRx）之间的频率偏移（Delta）收件人。接收机使用转换器使二进制硬判决执行n次过采样，然后获得符号判定值，计算每个分割相位的定时相关值，并计算特定周期或加法次数的累积定时相关值。接收机确定其采样频率是高于还是低于正确的符号速率，适当地移位采样位置，并且在保持正确的采样位置的同时进行接收，从而使由频率偏移引起的数据偏移能够在飞行中得到补偿。

8. 发明授权

US08037395B2 Encoding and decoding method for packet recovery 失效
标题翻译：数据包恢复的编码和解码方法
公开(公告)号：US08037395B2
公开(公告)日：2011-10-11
申请号：US11773117
申请日：2007-07-03
申请人： Yasunao Katayama , Daiju Nakano
发明人： Yasunao Katayama , Daiju Nakano
IPC分类号： H03M13/00
CPC分类号： H03M13/2906 , H03M13/1515 , H03M13/29 , H03M13/373
摘要： A Partially-Overlapped Block (POB) code used in an encoding and decoding method in which a plurality of different block codes are combined so that the block codes partially overlap one another. A method for recovering a plurality of packets by using a loss correction capability of this encoding method in which a larger number of packets than the number of added redundant packets per frame are recovered, by reusing redundant information of neighboring frames effectively, without increasing the asymptotic complexity of its decoding algorithm.
摘要翻译：在编码和解码方法中使用的部分重叠块（POB）码，其中组合多个不同的块码，使得块码部分彼此重叠。通过使用该编码方法的损失校正能力来恢复多个分组的方法，其中通过重复使用相邻帧的冗余信息而不增加渐近的比例来恢复比每帧增加的冗余分组数更多的分组其解码算法的复杂度。

9. 发明申请

US20110150151A1 COMPENSATION FOR DATA DEVIATION CAUSED BY FREQUENCY OFFSET USING TIMING CORRELATION VALUE 有权
标题翻译：使用时间相关值对频率偏移引起的数据偏差进行补偿
公开(公告)号：US20110150151A1
公开(公告)日：2011-06-23
申请号：US12974078
申请日：2010-12-21
申请人： Yasunao Katayama , Daiju Nakano
发明人： Yasunao Katayama , Daiju Nakano
IPC分类号： H04L27/06
CPC分类号： H04L27/0014 , H04L2027/0026 , H04L2027/0036 , H04L2027/0065
摘要： A method and circuitry for detecting a frequency offset (Δ) between data at a transmission symbol rate (fTx) transmitted from a transmitter and a reception sampling frequency (fRx) operating in a receiver on the basis of hard decision based on a binary number in the receiver. The receiver uses a converter to make binary hard decisions performs n times oversampling, then obtains a symbol decision value, calculates a timing correlation value for each plurality of partition phases, and calculates a cumulative timing correlation value for a specific period or number of additions. The receiver determines whether its sampling frequency is higher or lower than a correct symbol rate, appropriately shifts a sampling position, and makes reception while maintaining the correct sampling position thereby enables data deviation caused by a frequency offset to be compensated on the fly.
摘要翻译：一种方法和电路，用于基于基于二进制数的硬判决来检测从发送器发送的发送符号率（fTx）的数据和在接收器中操作的接收采样频率（fRx）之间的频率偏移（＆Dgr）在接收器中。接收机使用转换器使二进制硬判决执行n次过采样，然后获得符号判定值，计算每个分割相位的定时相关值，并计算特定周期或加法次数的累积定时相关值。接收机确定其采样频率是高于还是低于正确的符号速率，适当地移位采样位置，并且在保持正确的采样位置的同时进行接收，从而使由频率偏移引起的数据偏移能够在飞行中得到补偿。

10. 发明申请

US20110130108A1 RADIO RECEIVER, RADIO COMMUNICATION SYSTEM, RADIO COMMUNICATION METHOD, AND PROGRAM 有权
标题翻译：无线电接收机，无线电通信系统，无线电通信方法和程序
公开(公告)号：US20110130108A1
公开(公告)日：2011-06-02
申请号：US12947974
申请日：2010-11-17
申请人： Yasunao Katayama , Daiju Nakano
发明人： Yasunao Katayama , Daiju Nakano
IPC分类号： H04B17/00
CPC分类号： H04L7/042 , H04W88/02
摘要： A radio receiver including a sampling unit, a provider, an arithmetic operation unit, an estimator, and a converter. The sampling unit samples a baseband signal transmitted from the radio transmitter, at a fractional multiple of a symbol rate, and generates fractional-multiple-sampling data. The provider provides reference data in which the known symbol sequence arranged in a frame by the radio transmitter is interpolated at a rate of the fractional multiple. The arithmetic operation unit performs an arithmetic operation for evaluation data in which the degree of consistency in waveform between the fractional-multiple-sampling data and the reference data is evaluated. The estimator estimates a reference timing from a shift amount at which the evaluation data shows the maximum degree of consistency in waveform. The converter converts the fractional-multiple-sampling data by using the reference timing as a reference thereby recovering the data having the symbol rate.
摘要翻译：包括采样单元，提供者，算术运算单元，估计器和转换器的无线电接收机。采样单元以符号率的分数倍采样从无线电发射机发送的基带信号，并产生分数多采样数据。提供商提供参考数据，其中由无线电发射机布置在帧中的已知符号序列以小数倍数的速率被内插。算术运算单元对评价数据进行算术运算，其中评估分数 - 多采样数据与参考数据之间的波形的一致性程度。估计器从评估数据显示最大波形一致性的偏移量估计基准定时。转换器通过使用参考定时作为参考来转换分数多采样数据，从而恢复具有符号速率的数据。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式