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    • 22. 发明授权
    • Method and apparatus for linear predicting
    • 线性预测的方法和装置
    • US06404827B1
    • 2002-06-11
    • US09313990
    • 1999-05-19
    • Mitsuru Uesugi
    • Mitsuru Uesugi
    • H03D100
    • H04L25/024H04L27/2273H04L2027/0028H04L2027/0046H04L2027/0053
    • In the receiver of the present invention, it is after weighting every observed value with corresponding likelihood at every observation points that a least square method is utilized as a linear prediction to the observations, in order to improve the accuracy of the linear prediction by making the influence of the probable observed values to the prediction result larger. The present invention can improve the accuracy of received signal correction in a receiver, by making a linear prediction more reliable, which is applied for frequency offset compensation, phase shift compensation, synchronization shift adjustment, combined diversity and other signal values estimation.
    • 在本发明的接收机中,在每个观测点对每个观测值加权每个观测值之后,使用最小二乘法作为观测值的线性预测,以便通过使得线性预测的精度提高 可能的观察值对预测结果的影响较大。 本发明可以通过使线性预测更可靠地提高接收机中的接收信号校正的精度,其应用于频偏补偿,相移补偿,同步移位调整,组合分集和其他信号值估计。
    • 24. 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。
    • 26. 发明授权
    • Interference signal cancellation system
    • 干扰信号消除系统
    • US6002727A
    • 1999-12-14
    • US951539
    • 1997-10-16
    • Mitsuru Uesugi
    • Mitsuru Uesugi
    • H04J13/00H03D1/04H04B1/10H04B1/68H04B1/7107H04B7/08H04W76/02H04W88/02
    • H04B1/71072H04B1/692H04B1/7115
    • The interference signal cancellation system of the invention has: usual CDMA demodulators respectively disposed for codes, each of the CDMA demodulators having a matched filter 105 and an identifier 107; and a likelihood calculator 108 for each of the demodulators. The apparatus further has: a buffer 103 which stores provisional decision values; another buffer 109 which stores likelihoods; an order determining device 110 which determines an order in accordance with the likelihoods; a respreading device 111 which performs respreading in accordance with the determined order; a delay device 102 which delays a received signal; and a subtractor 112 which subtracts a result of the respreading from the delayed data. For each symbol, the largest likelihood is selected, and a replica is generated by using it. A desired performance is attained by performing one provisional decision and one demodulation. Therefore, computational complexity is reduced and realization is facilitated.
    • 本发明的干扰信号消除系统具有:分别为代码设置的通常的CDMA解调器,每个CDMA解调器具有匹配滤波器105和标识符107; 以及每个解调器的似然度计算器108。 该装置还具有:存储临时判定值的缓冲器103; 存储可能性的另一缓冲器109; 订单确定装置110,其根据似然性确定订单; 根据确定的顺序执行重新发送的再生装置111; 延迟装置102,其延迟接收的信号; 以及从延迟数据中减去重新发现的结果的减法器112。 对于每个符号,选择最大的可能性,并通过使用它来生成副本。 通过执行一个临时决定和一个解调来获得期望的性能。 因此,减少了计算复杂度并促进了实现。
    • 29. 发明授权
    • Transmitting apparatus, receiving apparatus, and wireless communication method
    • 发送装置,接收装置和无线通信方法
    • US08279953B2
    • 2012-10-02
    • US11813722
    • 2005-12-27
    • Mitsuru UesugiEiji OtaAtsushi SumasuKeisuke Ebiko
    • Mitsuru UesugiEiji OtaAtsushi SumasuKeisuke Ebiko
    • H04K1/10H04L27/28
    • H04L25/022H04L5/0007H04L5/0048H04L25/0232H04L25/03159H04L25/03891H04L2025/03414H04L2025/03522
    • A transmitting apparatus, a receiving apparatus and a wireless communication method for suppressing interference between codes, while further reducing the ratio of redundant components occupying a signal to improve the transmission efficiency. The transmitting apparatus (100) transmits a signal having a frame structure in which a plurality of symbols follow a pilot symbol to which a guard interval has been added. In the receiving apparatus (200) that receives that signal, a long FFT target section acquiring part (202) acquires, from the received OFDM signal, a long FFT target section that is a target section in which delay waves are to be removed by use of a pilot symbol. A long FFT part (203) performs a fast Fourier transformation of the long FFT target section to convert it to a frequency domain signal. A frequency equalizing part (204) performs a frequency equalization of the long FFT target section by use of an interpolation result of communication line estimation value. A long IFFT part (205) performs an inverse fast Fourier transformation of the long FFT target section as frequency equalized to convert it back to a time domain signal.
    • 一种用于抑制代码之间的干扰的发送装置,接收装置和无线通信方法,同时进一步减少占用信号的冗余部件的比率以提高传输效率。 发送装置(100)发送具有帧结构的信号,其中多个符号遵循已经添加有保护间隔的导频符号。 在接收到该信号的接收装置(200)中,长FFT对象部分获取部(202)从接收到的OFDM信号中获取作为要使用的移除延迟波的目标部分的长FFT对象部 的飞行员符号。 长FFT部(203)对长FFT对象部进行快速傅里叶变换,将其变换为频域信号。 频率均衡部分(204)通过使用通信线路估计值的内插结果来执行长FFT对象部分的频率均衡。 长IFFT部分(205)执行长FFT目标部分的快速傅立叶逆变换作为均衡的频率,以将其转换回到时域信号。
    • 30. 发明授权
    • Mobile station apparatus, communication method, and base station apparatus
    • 移动站装置,通信方法以及基站装置
    • US08155227B2
    • 2012-04-10
    • US13160872
    • 2011-06-15
    • Jinsong DuanMitsuru UesugiKeisuke EbikoKeiji TakakusakiAtsushi Sumasu
    • Jinsong DuanMitsuru UesugiKeisuke EbikoKeiji TakakusakiAtsushi Sumasu
    • H04K1/10
    • H04L1/0026H04L1/0003H04L1/0009H04L1/0029H04L1/003H04L5/0007H04L5/0046H04L5/006H04L5/0091H04L25/022
    • A mobile terminal device for performing multi-carrier communication with a base station device can improve communication quality while reducing the data amount without lowering accuracy of feedback information. In the mobile station device (100), a reception level measuring unit (135) measuring SINR as a reception level for each chunk formed by a plurality of sub-carriers according to a known signal; a control information transmission control unit (160) transmits feedback information (CQI information) based on the communication quality of each chunk to a base station device (200); a relative value calculation unit (150) calculates a relative value of MCS corresponding to the reception level between adjacent chunks from the reception level of each chunk; and a CQI information generation unit (155) generates feedback information (CQI information) from an absolute value of MCS corresponding to the reception level of the reference chunk and a relative value of MCS corresponding to the reception level between the adjacent chunks.
    • 用于与基站设备进行多载波通信的移动终端设备可以在降低数据量的同时提高通信质量,而不降低反馈信息的准确性。 在所述移动台装置(100)中,根据已知信号,将由SINR构成的每个块的接收电平测量SINR的接收电平测量单元(135) 控制信息发送控制部(160)将基于各块的通信质量的反馈信息(CQI信息)发送到基站装置(200); 相对值计算单元从每个块的接收电平计算与相邻块之间的接收电平相对应的MCS的相对值; CQI信息生成部(155)根据与基准块的接收电平对应的MCS的绝对值和与相邻的块之间的接收电平相对应的MCS的相对值生成反馈信息(CQI信息)。