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公开(公告)号：US09191046B2
公开(公告)日：2015-11-17
申请号：US13814902
申请日：2012-02-07
CPC分类号： H04B1/1027 , H04L25/022 , H04L25/0224 , H04L25/03159 , H04L27/2636 , H04L27/2644 , H04L27/265 , H04L27/2655 , H04L27/2672 , H04L27/2675 , H04L2025/03414
摘要： An FFT unit subjects a P-times oversampling output of an AD converter to Fourier transform into a frequency domain signal. A distortion estimation unit estimates a distortion characteristic from a difference between the frequency domain signal and a reference signal. A correction coefficient calculation unit calculates a correction coefficient of a distortion characteristic. A correction unit corrects the frequency domain signal by using the correction coefficient. An IFFT unit subjects the corrected frequency domain signal to inverse Fourier into a time domain signal having the same sampling speed as a symbol speed, and outputs a partial time series.
摘要翻译： FFT单元对AD转换器的P倍过采样输出进行傅里叶变换成频域信号。 失真估计单元从频域信号和参考信号之间的差估计失真特性。 校正系数计算单元计算失真特性的校正系数。 校正单元通过使用校正系数校正频域信号。 IFFT单元将经校正的频域信号逆傅里叶变换成具有与符号速度相同的采样速度的时域信号，并输出部分时间序列。
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公开(公告)号：US08761319B2
公开(公告)日：2014-06-24
申请号：US13814204
申请日：2012-02-13
IPC分类号： H04L27/06
CPC分类号： H04L25/06 , H04L25/061 , H04L27/0014 , H04L27/227 , H04L27/38 , H04L2027/0026
摘要： There are provided a correlation calculation unit that takes a cross-correlation between a signal from which a DC component of an analog baseband signal is removed, and to which a known fixed DC offset is added, and a known signal, an inter-correlation peak phase difference detection unit that estimates a carrier frequency offset from a peak of the calculated correlation vector, and a residual DC offset estimation unit that estimates a residual DC offset component from a mean value of the sidelobe of the calculated correlation vector.
摘要翻译： 提供了一种相关计算单元，其将去除了模拟基带信号的DC分量的信号和已知的固定DC偏移相加的信号与已知信号，相互相关峰 估计从计算出的相关矢量的峰值的载波频率偏移的相位差检测单元，以及从所计算的相关矢量的旁瓣的平均值估计残差DC偏移分量的残差DC偏移估计单元。
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公开(公告)号：US20130136216A1
公开(公告)日：2013-05-30
申请号：US13814204
申请日：2012-02-13
IPC分类号： H04L25/06
CPC分类号： H04L25/06 , H04L25/061 , H04L27/0014 , H04L27/227 , H04L27/38 , H04L2027/0026
摘要： There are provided a correlation calculation unit that takes a cross-correlation between a signal from which a DC component of an analog baseband signal is removed, and to which a known fixed DC offset is added, and a known signal, an inter-correlation peak phase difference detection unit that estimates a carrier frequency offset from a peak of the calculated correlation vector, and a residual DC offset estimation unit that estimates a residual DC offset component from a mean value of the sidelobe of the calculated correlation vector.
摘要翻译： 提供了一种相关计算单元，其将去除了模拟基带信号的DC分量的信号和已知的固定DC偏移相加的信号与已知信号，相互相关峰 估计从计算出的相关矢量的峰值的载波频率偏移的相位差检测单元，以及从所计算的相关矢量的旁瓣的平均值估计残差DC偏移分量的残差DC偏移估计单元。
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公开(公告)号：US20130136165A1
公开(公告)日：2013-05-30
申请号：US13814902
申请日：2012-02-07
IPC分类号： H04B1/10
CPC分类号： H04B1/1027 , H04L25/022 , H04L25/0224 , H04L25/03159 , H04L27/2636 , H04L27/2644 , H04L27/265 , H04L27/2655 , H04L27/2672 , H04L27/2675 , H04L2025/03414
摘要： An FFT unit subjects a P-times oversampling output of an AD converter to Fourier transform into a frequency domain signal. A distortion estimation unit estimates a distortion characteristic from a difference between the frequency domain signal and a reference signal. A correction coefficient calculation unit calculates a correction coefficient of a distortion characteristic. A correction unit corrects the frequency domain signal by using the correction coefficient. An IFFT unit subjects the corrected frequency domain signal to inverse Fourier into a time domain signal having the same sampling speed as a symbol speed, and outputs a partial time series.
摘要翻译： FFT单元对AD转换器的P倍过采样输出进行傅里叶变换成频域信号。 失真估计单元从频域信号和参考信号之间的差估计失真特性。 校正系数计算单元计算失真特性的校正系数。 校正单元通过使用校正系数校正频域信号。 IFFT单元将经校正的频域信号逆傅里叶变换成具有与符号速度相同的采样速度的时域信号，并输出部分时间序列。
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5.发明授权公开(公告)号：US08504101B2
公开(公告)日：2013-08-06
申请号：US12067062
申请日：2006-09-25
IPC分类号： H04M1/00
摘要： A multimode wireless communication apparatus that supports plural wireless communication systems and switches wireless communication systems to communicate. The apparatus includes a signal processor capable of switching wireless communication systems by plural manners; and a controller that directs to the signal processor a combination of manners of switching wireless communication systems according to a communication environment. The signal processor switches wireless communication systems according to the combination of manners of switching wireless communication systems directed from the controller.
摘要翻译： 一种支持多个无线通信系统并切换无线通信系统进行通信的多模无线通信装置。 该装置包括能够通过多种方式切换无线通信系统的信号处理器; 以及根据通信环境将切换无线通信系统的方式的组合指向信号处理器的控制器。 信号处理器根据从控制器引导的切换无线通信系统的方式的组合来切换无线通信系统。
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公开(公告)号：US08379764B2
公开(公告)日：2013-02-19
申请号：US12992253
申请日：2009-07-30
申请人： Takahiro Ohyama , Takenori Sakamoto
发明人： Takahiro Ohyama , Takenori Sakamoto
CPC分类号： H04L25/0216 , H04B1/71637 , H04B1/7183 , H04L25/0224 , H04L25/0226 , H04L27/06 , H04L2025/03388
摘要： Disclosed are a receiving device and a channel estimation method that are capable of using the amplitude information of a received signal to perform proper channel estimation. In the device, a detection section (102) extracts the amplitude information of the OOK modulation signal sequence in which a known CES (Channel Estimation Sequence) composed of data “0” and “1” is OOK (On Off Keying)-modulated to obtain a detected signal sequence. A “1”-detection section (1042) extracts only the sample value corresponding to the data “1” from the sample values of the detected signal sequence to obtain an extracted signal sequence. A correlation calculating section (1043) performs the correlation calculation between the extracted signal sequence and the CES. A propagation delay estimation section (1044) estimates the propagation delay amount of a CIR (Channel Impulse Response) from the correlation calculation. An amplitude coefficient estimation section (1045) estimates the amplitude coefficient of the CIR from the correlation calculation.
摘要翻译： 公开了能够使用接收信号的振幅信息进行适当的信道估计的接收装置和信道估计方法。 在该装置中，检测部（102）提取OOK调制信号序列的振幅信息，其中由数据0和1组成的已知CES（信道估计序列）是OOK（开关键控））调制以获得检测信号 序列。 1检测部分（1042）仅从检测到的信号序列的样本值中提取与数据1相对应的样本值，以获得提取的信号序列。 相关计算部（1043）进行所提取的信号序列和CES之间的相关计算。 传播延迟估计部（1044）从相关计算估计CIR（信道脉冲响应）的传播延迟量。 幅度系数估计部（1045）根据相关计算来估计CIR的振幅系数。
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7.发明授权Reception quality estimating apparatus, wireless communication system, and reception quality estimating method 有权接收质量估计装置，无线通信系统和接收质量估计方法公开(公告)号：US07817753B2
公开(公告)日：2010-10-19
申请号：US11915330
申请日：2006-05-23
申请人： Katsuaki Abe , Takenori Sakamoto
发明人： Katsuaki Abe , Takenori Sakamoto
CPC分类号： H04L27/34 , H04L1/0054 , H04L1/0068 , H04L1/206 , H04L25/067
摘要： A reception quality estimating apparatus, a wireless communication system and a reception quality estimating method wherein the communication qualities in a case where different communication schemes are used to have communication can be artificially estimated without switching the communication schemes to be used for the communication. A wireless communication apparatus (100) comprises a reception processing part (110), an artificially decoded error estimating part (120), and an upper-order layer processing part (130). An orthogonal vector data sequence (152), which is generated by a demodulating part (111) from a received signal (150), for each symbol in the current modulation scheme is used to artificially generate a likelihood metric value (155) obtained in a case of using a second communication scheme, which has a larger number of modulation multi-values than the current communication scheme, to perform a signal point arrangement. An artificially decoding part (122) then uses the likelihood metric value (155) to perform an artificial error correction decoding process, a result of which (156) is then subjected to an error detecting process.
摘要翻译： 接收质量估计装置，无线通信系统和接收质量估计方法，其中在不使用通信方式进行通信的情况下，可以人为地估计在不同的通信方案被用于通信的情况下的通信质量。 无线通信装置（100）包括接收处理部（110），人为解码的误差估计部（120）和高阶层处理部（130）。 使用当前调制方案中的每个符号从接收信号（150）由解调部分（111）生成的正交矢量数据序列（152），以人为地生成在当前调制方案中获得的似然度量值（155） 使用具有比当前通信方案更多数量的调制多值的第二通信方案来执行信号点排列的情况。 人造解码部分（122）然后使用似然度量值（155）来执行人造纠错解码处理，其结果（156）接着进行错误检测处理。
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公开(公告)号：US20060150174A1
公开(公告)日：2006-07-06
申请号：US10545869
申请日：2004-02-16
申请人： Katsuaki Abe , Takenori Sakamoto
发明人： Katsuaki Abe , Takenori Sakamoto
IPC分类号： G06F9/44
CPC分类号： H04W8/245 , G06F8/65 , H04B1/0003 , H04W8/22
摘要： A radio communication apparatus to be changed in function by software, when downloading software from a download server, first downloads software limited in operation and then configures a software radio section. After the configuration and the operation confirmation have been normally completed, execution-allowing key information is requested and received. Using it, reconfiguration is carried out in part thereby enabling all the operations. Accordingly, it is possible to safely carry out a download and a setting update of software to the radio communication apparatus.
摘要翻译： 通过软件功能改变的无线电通信装置当从下载服务器下载软件时，首先下载在操作中限制的软件，然后配置软件无线电部分。 在配置和操作确认已经正常完成之后，请求和接收执行允许密钥信息。 使用它，部分地执行重新配置，从而实现所有操作。 因此，可以安全地向无线通信装置执行软件的下载和设置更新。
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公开(公告)号：US20130163656A1
公开(公告)日：2013-06-27
申请号：US13818629
申请日：2011-09-09
申请人： Takenori Sakamoto
发明人： Takenori Sakamoto
IPC分类号： H04L1/20
CPC分类号： H04L1/206 , H04L27/364 , H04L27/3809 , H04L27/3863
摘要： By a simple computation, orthogonal errors from an orthogonal modulator and an orthogonal demodulator are separately corrected. Based on the amplitude of a demodulated signal, an orthogonal-error detection unit (320) detects orthogonal errors from an orthogonal modulation unit (140) and an orthogonal demodulation unit (230). Specifically, according to the distribution of transmission signal points on an I-Q plane, demultiplexers (321 and 322) in an orthogonal-error detection unit (320) separate a demodulated signal into a signal on the I-axis and a signal on the Q-axis. Zero-crossing detection units (325 and 326) detect the amplitudes of the separated signals at the intersection of the I- and Q-axes. The orthogonal-error detection unit (320) detects the orthogonal errors based on results from comparing the amplitudes at said intersection. A gain control unit (330) controls settings for a transmission orthogonal-error correction unit (120) and reception orthogonal-error correction unit (250) according to the detected orthogonal errors.
摘要翻译： 通过简单的计算，可以分别校正来自正交调制器和正交解调器的正交误差。 基于解调信号的幅度，正交误差检测单元（320）从正交调制单元（140）和正交解调单元（230）检测正交误差。 具体地，根据IQ平面上的发送信号点的分布，正交误差检测单元（320）中的解复用器（321和322）将解调信号分离成I轴上的信号，并将Q- 轴。 过零检测单元（325和326）检测在I轴和Q轴交叉处的分离信号的振幅。 正交误差检测单元（320）根据比较所述交点处的振幅的结果来检测正交误差。 增益控制单元（330）根据检测到的正交误差来控制发送正交误差校正单元（120）和接收正交误差校正单元（250）的设置。
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公开(公告)号：US08014439B2
公开(公告)日：2011-09-06
申请号：US10593974
申请日：2005-03-25
IPC分类号： H04B1/38
CPC分类号： H04L1/0026 , H04L1/0003 , H04L1/06
摘要： A communication device selects an optimal modulation method even when a propagation path condition is changed. In the communication device, a second communication device has a transmission path condition estimation unit for estimating the propagation path condition change speed and a communication quality estimation unit for modifying the communication quality estimation method according to the speed of the change of the propagation path condition and for estimating the communication quality according to the modified estimation method. The information on the estimated propagation path condition and the information on the communication quality are transmitted from a transmission processing unit, and an adaptive modulation control unit of the first communication device sets a condition for selecting the modulation method and decides the modulation method according to the set condition and the information on the communication quality.
摘要翻译： 通信装置即使在传播路径条件变化的情况下也选择最佳的调制方式。 在通信装置中，第二通信装置具有用于估计传播路径条件变化速度的传输路径条件估计单元和通信质量估计单元，用于根据传播路径条件的改变速度来修改通信质量估计方法，以及 用于根据修改的估计方法估计通信质量。 从发送处理单元发送关于估计的传播路径条件的信息和关于通信质量的信息，并且第一通信设备的自适应调制控制单元设置用于选择调制方法的条件，并且根据 设置条件和通信质量信息。
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