公开(公告)号：US06603980B1

公开(公告)日：2003-08-05

申请号：US09529871

申请日：2000-04-20

申请人： Keiichi Kitagawa ,  Mitsuru Uesugi ,  Kazuyuki Miya ,  Makis Kasapidis

发明人： Keiichi Kitagawa ,  Mitsuru Uesugi ,  Kazuyuki Miya ,  Makis Kasapidis

IPC分类号： H04B700

CPC分类号： H04W52/223 ,  H04W52/04 ,  H04W52/24 ,  H04W52/283 ,  H04W52/288 ,  H04W52/36 ,  H04W52/44 ,  H04W52/54

摘要： Received quality detecting section 108 detects a received quality, bit determining section 111 determines whether a TPC bit is 0 or 1, amplitude reading section 112 reads a ratio of an amplitude of a signal other than the TPC bit and an amplitude of the TPC bit, accumulating section 113 determines an increase or decrease of transmit power and an amount of the increase and decrease of the transmit power using a symbol of the TPC bit for the increase or decrease, and an amplitude ratio for the amount of the increase and decrease to instruct to transmission amplifier 104, and multiplying section 114 multiplies the amplitude of the signal other than the TPC bit by a correction value corresponding to the received quality to determine the amplitude of the TPC bit.

摘要翻译： 接收质量检测部分108检测接收质量，比特确定部分111确定TPC比特是0还是1，振幅读取部分112读取TPC比特之外的信号的幅度与TPC比特的振幅的比率， 累加部113使用TPC比特的符号来增加或减少发送功率的增加或减小量以及发送功率的增加和减少的量，以及增加和减少的量的幅度比来指示 到发送放大器104，并且乘法部114将除了TPC比特之外的信号的幅度乘以与接收质量对应的校正值，以确定TPC比特的幅度。

公开(公告)号：US06424618B1

公开(公告)日：2002-07-23

申请号：US09091422

申请日：1998-06-24

申请人： Mitsuru Uesugi ,  Taku Nagase ,  Osamu Kato

发明人： Mitsuru Uesugi ,  Taku Nagase ,  Osamu Kato

IPC分类号： H04J1300

CPC分类号： H04J13/18 ,  H04J13/004 ,  H04J13/12

摘要： The present invention relates to a code generating method for combining an orthogonal code for CDMA having a specific spreading factor and its polarity inverted spreading code to generate another spreading code having a larger spreading factor than that of the spreading code. And the present invention relates to a code selecting method for combining an orthogonal code for CDMA having a specific spreading factor and its polarity inverted spreading code to generate another spreading code having a larger spreading factor than that of the spreading code, then to assign the generated orthogonal code for a user in order of users having an orthogonal code of small spreading factor.

摘要翻译： 本发明涉及一种用于组合具有特定扩展因子的CDMA正交码及其极性反转扩展码的码产生方法，以产生具有比扩频码扩频率更大的扩展因子的另一扩展码。 本发明涉及一种编码选择方法，用于组合具有特定扩展因子的CDMA的正交码及其极性反转的扩展码，以产生具有比扩展码更大的扩展因子的另一扩展码，然后分配所生成的 正交码的用户按照具有小扩频因子的正交码的用户的顺序。

公开(公告)号：US06208701B1

公开(公告)日：2001-03-27

申请号：US08867806

申请日：1997-06-03

申请人： Katsuhiko Hiramatsu ,  Mitsuru Uesugi ,  Hiroaki Sudo

发明人： Katsuhiko Hiramatsu ,  Mitsuru Uesugi ,  Hiroaki Sudo

IPC分类号： H04L700

CPC分类号： H04L7/0054 ,  H04L7/0334 ,  H04L7/0337 ,  H04L7/041

摘要： The synchronizing apparatus includes a block for detecting a code from an input signal, a block for detecting from the code the variable points of the code at several times as high as the symbol rate, a block for calculating a histogram of the detected variables of the code to time, and a block for deciding that the phase number at which the calculated histogram takes the maximum value is a symbol synchronization point. This synchronizing apparatus detects the zero-cross points of an intermediate frequency band signal at N times as high as the symbol rate. It also calculates a histogram of detected time (0 to N−1). The time (0 to N−1) at which the histogram is the maximum within a predetermined detected time is selected as a symbol clock, and thereby symbol synchronization is established.

摘要翻译： 同步装置包括用于从输入信号中检测代码的块，用于从代码中检测代码的可变点数为符号速率的几倍的块，用于计算检测到的变量的直方图的块 代码到时间，以及用于确定计算的直方图获取最大值的相位数的块是符号同步点。 该同步装置检测中间频带信号的零交叉点的N倍于符号率。 它还计算检测时间的直方图（0到N-1）。 选择在预定检测时间内直方图为最大值的时间（0到N-1）作为符号时钟，从而建立符号同步。

公开(公告)号：US6111921A

公开(公告)日：2000-08-29

申请号：US28853

申请日：1998-02-24

申请人： Hiroaki Sudo ,  Katsuhiko Hiramatsu ,  Mitsuru Uesugi

发明人： Hiroaki Sudo ,  Katsuhiko Hiramatsu ,  Mitsuru Uesugi

IPC分类号： H04L1/00 ,  H04B1/10 ,  H04J11/00 ,  H04L1/20 ,  H04L27/20

CPC分类号： H04L1/206

摘要： An estimator of error rate is provided for reducing variations of an error pulse count value at burst signals of a received signal for digital mobile communications and thereby improving an accuracy of estimating an error rate. The estimator of error rate includes detectors for detecting that phase information derived from a baseband signal of an I channel (I signal) and a baseband signal of a Q channel (Q signal) is located in an error pulse generation area, detectors for detecting that envelope information of the I signal and the Q signal is located in the error pulse generation area, and a counter for detecting that the phase error signal and the envelope error signal are outputted and counting the signals. The estimator operates to estimate an error rate based on an error pulse count value at one period. The estimator operates to detect that the phase information and the envelope information are located in the error pulse generation area. This serves to suppress the probability of counting correct signals and reducing variations of a count value at the burst signals, thereby improving an accuracy of estimating an error rate.

摘要翻译： 提供误差率的估计器，用于减少用于数字移动通信的接收信号的脉冲串信号的误差脉冲计数值的变化，从而提高误差率的估计精度。 误差率的估计器包括用于检测从I信道（I信号）的基带信号和Q信道（Q信号）的基带信号导出的相位信息位于误差脉冲产生区域中的检测器，用于检测 I信号和Q信号的包络信息位于误差脉冲产生区域中，并且用于检测相位误差信号和包络误差信号的计数器，并对该信号进行计数。 估计器用于基于一个周期的错误脉冲计数值来估计错误率。 估计器操作以检测相位信息和包络信息位于错误脉冲产生区域中。 这用于抑制对正确信号进行计数并减少脉冲串信号处的计数值的变化的概率，从而提高误差率的估计精度。

公开(公告)号：US5968201A

公开(公告)日：1999-10-19

申请号：US834838

申请日：1997-04-10

申请人： Kazuo Shida ,  Mitsuru Uesugi

发明人： Kazuo Shida ,  Mitsuru Uesugi

IPC分类号： G11B20/18 ,  H03M13/00 ,  H03M13/29 ,  H03M13/37 ,  H04B14/04 ,  G06F11/10 ,  H03M13/12

CPC分类号： H03M13/2927 ,  H03M13/00 ,  H03M13/23 ,  H03M13/29 ,  H03M13/41

摘要： Received data representing voice information is subjected to Viterbi decoding to correct an error in the received data. Thereby, the received data is decoded into second data. A path metric is calculated to determine the second data during the Viterbi decoding. A decision is made as to whether or not at least one error is present in the second data by referring to a cyclic redundancy check code in the second data. The second data is discarded when it is decided that at least one error is present in the second data. A decision is made as to whether or not the calculated path metric exceeds a threshold value. The second data is discarded when it is decided that the path metric exceeds the threshold value. The second data is converted into sound when it is decided that at least one error is not present in the second data and that the path metric does not exceed the threshold value.

摘要翻译： 代表语音信息的接收数据进行维特比解码以校正接收到的数据中的错误。 由此，接收的数据被解码为第二数据。 计算路径度量以在维特比解码期间确定第二数据。 通过参考第二数据中的循环冗余校验码来决定第二数据中是否存在至少一个错误。 当确定在第二数据中存在至少一个错误时，丢弃第二数据。 作出关于所计算的路径度量是否超过阈值的决定。 当确定路径度量超过阈值时，第二数据被丢弃。 当确定在第二数据中不存在至少一个错误并且路径度量不超过阈值时，第二数据被转换成声音。

公开(公告)号：US5563911A

公开(公告)日：1996-10-08

申请号：US395828

申请日：1995-02-28

申请人： Mitsuru Uesugi ,  Kazuhisa Tsubaki ,  Kouichi Honma

发明人： Mitsuru Uesugi ,  Kazuhisa Tsubaki ,  Kouichi Honma

IPC分类号： H04B7/005 ,  H03H17/00 ,  H03H17/02 ,  H03H17/04 ,  H03H17/06 ,  H03H21/00 ,  H04B3/06 ,  H04L25/03

CPC分类号： H04B7/005 ,  H03H17/0288 ,  H04L25/03057 ,  H04L2025/03573

摘要： In an equalizer including a plurality of delay elements, a plurality of weighting elements and an adder, the impulse response of a signal transmission channel is estimated to selectively switch over a plurality of selector switches associated with the inputs and outputs of the respective delay elements, thereby selectively changing the combination of the delay elements and the weighting elements transmitting an input signal from the channel to the adder and also changing the combination of the adder and a delay element feeding back the output of the discriminator to the adder. Thus, the number of required taps of the equalizer can be reduced, so that the power consumption and size of the equalizer can be reduced.

公开(公告)号：US5524282A

公开(公告)日：1996-06-04

申请号：US672938

申请日：1991-03-21

申请人： Kouichi Honma ,  Mitsuru Uesugi ,  Kazuhisa Tsubaki

发明人： Kouichi Honma ,  Mitsuru Uesugi ,  Kazuhisa Tsubaki

IPC分类号： H04J3/00 ,  H04L7/04 ,  H04B17/00

CPC分类号： H04L7/04

摘要： An apparatus and a method utilized in the field of time division multiplex digital communications or the like for detecting the place of burst signals. A transmitter transmits a carrier wave modulated by message data signals having a reference signal inserted between them, and a receiver receives the transmitted modulated carrier wave. In the receiver, the received modulated carrier wave is demodulated by both a sine wave and a cosine wave each having an angular frequency deviation .DELTA..omega. relative to the received carrier waved, the phase difference between the demodulated message data signals and the modulated reference signal is detected, the time-based change of the detected phase difference is approximated by a function of low order, the error between the phase of the received reference signal and that computed on the basis of the approximation function is computed, and a burst place detection signal is generated when the computed error is smaller than a predetermined threshold value.

摘要翻译： 在时分复用数字通信等领域中使用的用于检测突发信号的位置的装置和方法。 发射机发送由具有插入在它们之间的参考信号的消息数据信号调制的载波，并且接收机接收发送的调制载波。 在接收机中，接收到的调制载波通过正弦波和余弦波被解调，每个正弦波和余弦波相对于所接收的载波波形具有角频率偏差ΔωTA，解调的消息数据信号和调制参考信号之间的相位差是 检测到的检测出的相位差的基于时间的变化由低阶函数近似，计算接收到的参考信号的相位与基于近似函数计算的相位之间的误差，以及突发位置检测信号 当计算出的误差小于预定阈值时产生。

公开(公告)号：US5444739A

公开(公告)日：1995-08-22

申请号：US937403

申请日：1992-08-31

申请人： Mitsuru Uesugi ,  Kazuhisa Tsubaki ,  Kouichi Honma

发明人： Mitsuru Uesugi ,  Kazuhisa Tsubaki ,  Kouichi Honma

IPC分类号： H04B7/005 ,  H03H17/00 ,  H03H17/02 ,  H03H17/04 ,  H03H17/06 ,  H03H21/00 ,  H04B3/06 ,  H04L25/03

CPC分类号： H04B7/005 ,  H03H17/0288 ,  H04L25/03057 ,  H04L2025/03573

摘要： In an equalizer including a plurality of delay elements, a plurality of weighting elements and an adder, the impulse response of a signal transmission channel is estimated to selectively switch over a plurality of selector switches associated with the inputs and outputs of the respective delay elements, thereby selectively changing the combination of the delay elements and the weighting elements transmitting an input signal from the channel to the adder and also changing the combination of the adder and a delay element feeding back the output of the discriminator to the adder. Thus, the number of required taps of the equalizer can be reduced, so that the power consumption and size of the equalizer can be reduced.

摘要翻译： 在包括多个延迟元件的均衡器，多个加权元件和加法器中，估计信号传输通道的脉冲响应以有选择地切换与相应延迟元件的输入和输出相关联的多个选择器开关， 从而选择性地改变延迟元件和从通道传输输入信号到加法器的加权元件的组合，并且还改变加法器和将鉴别器的输出反馈给加法器的延迟元件的组合。 因此，可以减少均衡器所需的抽头的数量，从而可以减小均衡器的功耗和尺寸。

公开(公告)号：US5414737A

公开(公告)日：1995-05-09

申请号：US975695

申请日：1992-11-13

申请人： Mitsuru Uesugi ,  Yoshiko Saito ,  Kazuhisa Tsubaki ,  Kouichi Honma

发明人： Mitsuru Uesugi ,  Yoshiko Saito ,  Kazuhisa Tsubaki ,  Kouichi Honma

IPC分类号： H04B7/26 ,  H04L1/00 ,  H04L25/30 ,  H04L27/00 ,  H04L27/10 ,  H04L27/06

CPC分类号： H04L1/203 ,  H04L1/0054

摘要： A data decoding device eliminates the need for encoding by a decoder for estimating an error rate and can estimate the error rate at a high precision even if an error is included. A square error sum is calculated by an error calculator based on an output of an equalizer. A estimated error rate is determined based on the error sum, a likelihood is determined based on the estimated error rate, and soft discrimination decoding is made based on the likelihood and the output of the equalizer.

摘要翻译： 数据解码装置消除了用于估计误码率的解码器编码的需要，并且即使包括错误也能以高精度估计错误率。 基于均衡器的输出的误差计算器计算平方误差和。 基于误差和来确定估计的误码率，基于估计的误码率确定似然性，并且基于均衡器的似然性和输出进行软鉴别解码。

公开(公告)号：US5333148A

公开(公告)日：1994-07-26

申请号：US843934

申请日：1992-02-25

申请人： Kazuhisa Tsubaki ,  Kouji Abe ,  Mitsuru Uesugi ,  Kouichi Honma

发明人： Kazuhisa Tsubaki ,  Kouji Abe ,  Mitsuru Uesugi ,  Kouichi Honma

IPC分类号： H04B3/06 ,  H04B7/26 ,  H04J3/06 ,  H04L1/20 ,  H04L7/08 ,  H04L27/00 ,  H03D1/00 ,  H03H7/30 ,  H04L7/00 ,  H04L27/06

CPC分类号： H04L1/20 ,  H04J3/0602

摘要： A data receiver which enhances a probability of frame synchronization even if a transmission line quality is bad detects a specific bit sequence in a received signal demodulated by a demodulator to deduce a transmission line quality by a line quality deducer. If the transmission line quality is so bad that a frame synchronization detector cannot detect the specific bit sequence, the specific bit sequence is detected from a received signal demodulated by an equalizer after the elimination of a transmission line distortion.

摘要翻译： 即使传输线质量差，增强帧同步概率的数据接收机检测由解调器解调的接收信号中的特定位序列，以通过线路质量推断器推断传输线质量。 如果传输线质量差使得帧同步检测器不能检测到特定比特序列，则在消除传输线失真之后，从均衡器解调的接收信号中检测特定比特序列。