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    • 2. 发明授权
    • Receiving apparatus and array combining method
    • 接收装置和阵列组合方法
    • US06763077B1
    • 2004-07-13
    • US09586957
    • 2000-06-05
    • Yoshiko SaitoMitsuru Uesugi
    • Yoshiko SaitoMitsuru Uesugi
    • H04B110
    • H04B7/086H04B7/0845H04L25/03133H04L2025/03477H04L2025/03617
    • A switch 404 sends an output of a reception processing section 402 to a training processing section 405 at a training processing time and to a demodulation processing section 407 by control of a timing control section 403. The training processing section 405 passes received signals through FFFs for the respective branches to perform array combination at the training processing time. A tap coefficient converting section 406 converts the tap coefficient of FFF estimated by the training processing section 405 to calculate a weighting factor. The demodulation processing section 407 weights the received signals using the calculated weighting factor to combine, and passes the combined signal through FFF. This makes it possible to reduce the amount of operations at the array combining time.
    • 开关404通过控制定时控制部403将接收处理部402的输出发送到训练处理部405,并通过控制定时控制部403向解调处理部407发送。训练处理部405将接收到的信号通过FFF进行传送, 各分支在训练处理时间进行阵列组合。 抽头系数转换部分406转换由训练处理部分405估计的抽头系数FFF以计算加权因子。 解调处理部407使用计算出的加权因子对接收信号进行加权合成,并通过FFF传递合成信号。 这使得可以减少阵列组合时间的操作量。
    • 4. 发明授权
    • Data receiving apparatus
    • 数据接收装置
    • US5566210A
    • 1996-10-15
    • US343851
    • 1994-11-17
    • Yoshiko SaitoMitsuru Uesugi
    • Yoshiko SaitoMitsuru Uesugi
    • H04L27/01H04B1/76H04B3/10H04L25/03H04L27/233H04L7/02H03H7/30
    • H04L25/03019H04L27/2338
    • A data receiving apparatus includes: a receiving portion for receiving a QPSK (PSK, GMSK) signal using a local oscillation signal; a forward (FWD) equalizing portion for effecting a FWD equalization to the PSK signal using FWD tap coefficients, including a FWD main tap coefficient, successively renewed; a backward equalizing portion for effecting a backward equalization to the PSK signal using backward tap coefficients, including a backward main tap coefficient, successively renewed; and a prediction portion for predicting a phase difference between a carrier frequency of the PSK signal and the local oscillation frequency according to the FWD and backward main tap coefficients. In this apparatus, the FWD and backward equalizing portions effect FWD and backward equalizing training processings using the sync word in the PSK signal in the FWD and backward directions to determine the FWD and backward tap coefficients before FWD and backward equalizations respectively. It may further include a correction portion for compensating a phase difference in outputs of the FWD and backward equalizing portions according to the predicted phase difference. The local oscillation frequency is controlled according to the predicted phase difference.
    • 数据接收装置包括:接收部分,用于使用本地振荡信号接收QPSK(PSK,GMSK)信号; 使用包括FWD主抽头系数的FWD抽头系数连续更新的用于对PSK信号进行FWD均衡的前向(FWD)均衡部分; 反向均衡部分,用于使用包括后向主抽头系数的反向抽头系数来连续更新来对PSK信号进行反向均衡; 以及预测部,用于根据FWD和后向主抽头系数来预测PSK信号的载波频率与本地振荡频率之间的相位差。 在该装置中,FWD和反向均衡部分使用FWD和后向中的PSK信号中的同步字来进行FWD和后向均衡训练处理,以分别在FWD和后向均衡之前确定FWD和后向抽头系数。 还可以包括用于根据预测的相位差补偿FWD和后向均衡部分的输出中的相位差的校正部分。 根据预测的相位差来控制本地振荡频率。
    • 9. 发明授权
    • Reception apparatus and replica signal generating method
    • 接收装置和复制信号生成方法
    • US06810096B1
    • 2004-10-26
    • US09743986
    • 2001-01-18
    • Yoshiko SaitoMitsuru Uesugi
    • Yoshiko SaitoMitsuru Uesugi
    • H03D100
    • H04B7/0857H01Q3/26
    • Signal component converging section 105 delays received signal components spread on a time axis to combine signal components based on an output of propagation path estimating section 104, maximum value detecting section 106 detects a sample timing of a signal component with the maximum power among signal components combined in signal component converging section 105, and tap coefficient estimating section 107 estimates a tap coefficient that minimizes a mean square of a difference between a replica signal and a received signal while assigning a tap coefficient of a fixed value (for example, 1) to a sampling timing providing the maximum power, and outputs the estimated tap coefficient to FFF in plural array combining section 102 and a replica generating section in Viterbi equalizer 108.
    • 信号分量会聚部105基于传播路径估计部104的输出,延迟在时间轴上扩展的接收信号分量,合成信号成分,最大值检测部106检测信号成分的信号成分的采样定时 在信号分量收敛部分105中,抽头系数估计部分107估计将复数信号和接收信号之间的差的均方最小的抽头系数,同时将固定值(例如,1)的抽头系数分配给 提供最大功率的采样定时,并将估计抽头系数输出到多个阵列组合部分102和维特比均衡器108中的副本生成部分的FFF。
    • 10. 发明授权
    • Modulator and modulation method for orthogonally modulating digital
baseband signals
    • 用于正交调制数字基带信号的调制器和调制方法
    • US6097259A
    • 2000-08-01
    • US147053
    • 1998-09-28
    • Yoshiko SaitoMitsuru Uesugi
    • Yoshiko SaitoMitsuru Uesugi
    • H03M7/32H04L27/20H04L27/36
    • H04L27/2092
    • A modulator and modulation method for orthogonally modulating digital baseband signals include interpolation filters that frequency convert the frequencies of an in-phase component and a quadrature phase component of a digital baseband signal to four times the frequency of an intermediate frequency. .DELTA..SIGMA. modulation circuits are provided and .DELTA..SIGMA. modulate the frequency converted signals. A low pass filter is provided to remove unnecessary components from the .DELTA..SIGMA. modulated signals. A switching circuit selects a signal that has passed through the low pass filter according to an order of an in-phase component, a code inverted component of a quadrature phase component, a code inverted component of the in-phase component and the quadrature phase component, and outputs these signals as a digital orthogonal signal. An N bit D/A converter converts the digital orthogonal signals into analog orthogonal signals.
    • PCT No.PCT / JP98 / 00657 Sec。 371日期:1998年9月28日 102(e)日期1998年9月28日PCT提交1998年2月17日PCT公布。 第WO98 / 38775号公报 日期1998年9月3日用于对数字基带信号进行正交调制的调制器和调制方法包括将数字基带信号的同相分量和正交相位分量的频率频率转换成中频频率的四倍的内插滤波器。 提供DELTA SIGMA调制电路,DELTA SIGMA调制变频信号。 提供低通滤波器以从DELTA SIGMA调制信号中去除不必要的分量。 开关电路根据同相分量的顺序,正交相位分量的代码反相分量,同相分量的码反相分量和正交相位分量来选择已经通过低通滤波器的信号 并输出这些信号作为数字正交信号。 N位D / A转换器将数字正交信号转换为模拟正交信号。