公开(公告)号：US5355101A

公开(公告)日：1994-10-11

申请号：US973762

申请日：1992-11-09

申请人： Masaki Ichihara ,  Tsuguo Maru

发明人： Masaki Ichihara ,  Tsuguo Maru

IPC分类号： H04L27/20 ,  H03C3/40 ,  H03D7/18

CPC分类号： H03C3/40 ,  H03D7/18

摘要： A quadrature modulator substantially completely compensating a phase error existing between two quadrature carriers by calculating two corrected baseband signals. One corrected baseband signal is generated by adding a common phase component signal and an orthogonal phase component signal after multiplying the common phase component signal and the orthogonal component signal by a first factor a and a second factor b respectively. The other corrected baseband signal is generated by adding the orthogonal phase component signal and the common phase component signal after multiplying the orthogonal component signal and the common phase component signal by the first factor a and the second factor b respectively. The output signal Z of the quadrature modulator is generated by adding both the outputs X and Y of first and second modulating circuits each modulating a respective carrier by a respective corrected baseband signal. If the phase error is .alpha., the phase error is compensated by adopting the multiplying factors, for example, a=cos (.alpha./2) and b=sin (.alpha./2). In this case, output signal Z is expressed as Z=cos .alpha..multidot.cos (.omega.t+.phi.(t)+.alpha./2), which is free from an image signal.

摘要翻译： 正交调制器通过计算两个校正的基带信号，基本上完全补偿存在于两个正交载波之间的相位误差。 通过在公共相位分量信号和正交分量信号分别乘以第一因子α和第二因子b之后，通过相加公共相位分量信号和正交相位分量信号来生成一个校正的基带信号。 通过在将正交分量信号和公共相位分量信号分别乘以第一因子α和第二因子b之后相加正交相位分量信号和公共相位分量信号来产生另一个校正的基带信号。 正交调制器的输出信号Z是通过将各自的载波调制各自的校正基带信号的第一和第二调制电路的输出X和Y相加而产生的。 如果相位误差为α，则通过采用乘法因子例如a = cos（α/ 2）和b = sin（α/ 2）来补偿相位误差。 在这种情况下，输出信号Z表示为没有图像信号的Z =cosαxcos（ω+ t + phi（t）+α/ 2）。

公开(公告)号：US20100135203A1

公开(公告)日：2010-06-03

申请号：US12452942

申请日：2008-08-01

申请人： Tsuguo Maru

发明人： Tsuguo Maru

IPC分类号： H04W40/00 ,  H04L27/28

CPC分类号： H04B7/0456 ,  H04B7/04 ,  H04B7/0617 ,  H04B7/0854 ,  H04L25/0204 ,  H04L25/0242 ,  H04L25/0248

摘要： A MIMO communication system having deterministic channels the orthogonality of which can be ensured even if a reflected wave other than the direct wave is present during line-of-sight communication is provided. The MIMO communication system is used in a line-of-sight environment and has deterministic channels between the transmission side where a plurality of transmission antennas are arranged and the reception side where a plurality of reception antennas are arranged. The transmission side, the reception side, or both transmission and reception sides of the MIMO communication system have a channel matrix calculation processing means for calculating a channel matrix for establishing an orthogonal channel as a communication channel. The transmission and reception antennas forming the channel matrix are horizontally arranged with respect to the ground.

摘要翻译： 提供具有确定性信道的MIMO通信系统，即使在视线通信期间存在除了直接波之外的反射波，也可以确保其正交性。 MIMO通信系统在视线环境中使用，并且在布置多个发送天线的发送侧和布置多个接收天线的接收侧之间具有确定性信道。 MIMO通信系统的发送侧，接收侧或发送侧和接收侧具有信道矩阵运算处理单元，用于计算用于建立正交信道的信道矩阵作为通信信道。 形成通道矩阵的发送和接收天线相对于地面水平布置。

公开(公告)号：US07289475B2

公开(公告)日：2007-10-30

申请号：US09916276

申请日：2001-07-30

申请人： Tsuguo Maru

发明人： Tsuguo Maru

IPC分类号： H04B7/216

CPC分类号： H04B1/70752 ,  H04B1/70735 ,  H04B1/708 ,  H04B1/7083 ,  H04B1/709 ,  H04B1/7097 ,  H04B2201/70702 ,  H04B2201/70707

摘要： In a high-speed search system for CDMA, plural (M) symbols which are subjected to spread frequency coding with a spreading code called as a short code are prepared when synchronization of the spreading code is established before synchronization of carrier is established in a mobile station used in a CDMA cellular system, data which are obtained by forming an orthogonal code with the polarities of the M symbols are set as a down signal, and when the orthogonal code concerned is detected, coherent integration is performed by a correlator having combinations of the polarities which can be possibly taken by the code over the plural symbols (of M) constituting the code.

摘要翻译： 在用于CDMA的高速搜索系统中，当在移动台中建立载波的同步之前建立扩频码的同步时，将被称为短码的扩展码进行扩展频率编码的多个（M）符号 在CDMA蜂窝系统中使用的站，将通过形成具有M个符号的极性的正交码获得的数据设置为下行信号，并且当检测到相关的正交码时，通过相关器执行相干积分，该相关器具有 可以通过构成代码的多个符号（M）的代码来执行的极性。

公开(公告)号：US07133472B2

公开(公告)日：2006-11-07

申请号：US09853968

申请日：2001-05-11

申请人： Tsuguo Maru

发明人： Tsuguo Maru

IPC分类号： H04M13/00 ,  H04L27/06

CPC分类号： H03M13/3905 ,  H03M13/2957 ,  H03M13/3922 ,  H03M13/395 ,  H03M13/616

摘要： A high-speed turbo decoder using a BCJR (Bahi, Cocke, Jelinek, and Raviv) algorithm or a BCJR algorithm which makes approximation by ACS computation (Add-Compare-Select computation) includes a supplier for supplying a plurality of pipelined stages of gamma metrics as a section for performing at least one of alpha metric computation and beta metric computation in the BCJR algorithm, an ACS computation portion which is constituted by a plurality of stages of cascade connections and receives the plurality of pipelined gamma metrics, a receiver that receives a computation result obtained by the ACS computation portion and updates state metrics every plurality of stages (K stages), and a memory for storing state metrics for every K stages.

摘要翻译： 使用BCJR（Bahi，Cocke，Jelinek和Raviv）算法或通过ACS计算（Add-Compare-Select计算）近似的BCJR算法的高速turbo解码器包括用于提供多个流水线级的伽马 度量作为用于在BCJR算法中执行α度量计算和β度量计算中的至少一个的部分，ACS计算部分，其由多级级联连接构成并且接收多个流水线伽马度量;接收器，其接收 由ACS计算部分获得的计算结果，并且每多级（K级）更新状态度量，以及用于存储每K级状态度量的存储器。

公开(公告)号：US20130251021A1

公开(公告)日：2013-09-26

申请号：US13990108

申请日：2011-11-24

申请人： Tsuguo Maru

发明人： Tsuguo Maru

IPC分类号： H04B7/08

CPC分类号： H04B7/08 ,  H04B7/0837 ,  H04B7/084

摘要： A wireless communication apparatus of the present invention comprises a plurality of branches, a tap output combining section, an adaptive blind processing section and a diversity combining section. Each of the plurality of branches comprises a tap processing section generates a tap output signal and a received signal vector on a basis of a received signal and a tap coefficient in a space diversity method. The tap output combining section calculates by linking the tap output signal as a tap output combination signal. The adaptive blind processing section generates the tap coefficient by an adaptive blind processing on a basis of the tap output combination signal and the received signal vector. The diversity combining section performs a diversity combination of the tap output signals. The adaptive blind processing section uses an evaluation condition so that the tap output combination signal be minimal.

摘要翻译： 本发明的无线通信装置包括多个分支，抽头输出组合部分，自适应盲处理部分和分集组合部分。 多个分支中的每一个包括抽头处理部分，基于空间分集方法中的接收信号和抽头系数生成抽头输出信号和接收信号向量。 抽头输出组合部分通过将抽头输出信号链接为抽头输出组合信号来计算。 自适应盲处理部分基于抽头输出组合信号和接收信号矢量通过自适应盲处理产生抽头系数。 分集组合部分执行抽头输出信号的分集组合。 自适应盲处理部分使用评估条件使得抽头输出组合信号最小。

公开(公告)号：US08140930B1

公开(公告)日：2012-03-20

申请号：US11914328

申请日：2006-04-18

申请人： Tsuguo Maru

发明人： Tsuguo Maru

IPC分类号： H03M13/00

CPC分类号： H03M13/1185 ,  H03M13/1111 ,  H03M13/1117 ,  H03M13/112 ,  H03M13/1122 ,  H03M13/1137 ,  H03M13/114 ,  H03M13/3723 ,  H03M13/616

摘要： The present invention is intended to provide an LDPC coding scheme which is capable of efficiently implementing a high-performance and high-speed encoder and decoder of an error correcting code suitable for the field of communications such as mobile communications. As to the configuration, a Tanner graph for representing codes with variable nodes and check nodes is used to classify the individual nodes into a plurality of categories. For calculating a probability propagation in iterative decoding, weighting previously determined for each category is performed on a log-likelihood ratio (LLR) subjected to propagation.

摘要翻译： 本发明旨在提供一种LDPC编码方案，其能够有效地实现适用于诸如移动通信的通信领域的纠错码的高性能和高速编码器和解码器。 关于该配置，使用用于表示具有可变节点和校验节点的代码的Tanner图将各个节点分类为多个类别。 为了计算迭代解码中的概率传播，对于经历传播的对数似然比（LLR）执行对于每个类别先前确定的加权。

公开(公告)号：US07724709B2

公开(公告)日：2010-05-25

申请号：US11476049

申请日：2006-06-28

申请人： Tsuguo Maru

发明人： Tsuguo Maru

IPC分类号： H04B7/216

CPC分类号： H04B1/70752 ,  H04B1/70735 ,  H04B1/708 ,  H04B1/7083 ,  H04B1/709 ,  H04B1/7097 ,  H04B2201/70702 ,  H04B2201/70707

摘要： In a high-speed search system for CDMA, plural (M) symbols which are subjected to spread frequency coding with a spreading code called as a short code are prepared when synchronization of the spreading code is established before synchronization of carrier is established in a mobile station used in a CDMA cellular system, data which are obtained by forming an orthogonal code with the polarities of the M symbols are set as a down signal, and when the orthogonal code concerned is detected, coherent integration is performed by a correlator having combinations of the polarities which can be possibly taken by the code over the plural symbols (of M) constituting the code.

摘要翻译： 在用于CDMA的高速搜索系统中，当在移动台中建立载波的同步之前建立扩频码的同步时，将被称为短码的扩展码进行扩展频率编码的多个（M）符号 在CDMA蜂窝系统中使用的站，将通过形成具有M个符号的极性的正交码获得的数据设置为下行信号，并且当检测到相关的正交码时，通过相关器执行相干积分，该相关器具有 可以通过构成代码的多个符号（M）的代码来执行的极性。

公开(公告)号：US20070229329A1

公开(公告)日：2007-10-04

申请号：US11569674

申请日：2005-05-25

申请人： Tsuguo Maru

发明人： Tsuguo Maru

IPC分类号： H03M13/00

CPC分类号： H04L1/005 ,  H03M13/258 ,  H03M13/2957 ,  H04J15/00 ,  H04L1/0618

摘要： The present invention is directed to providing a spatial-multiplexed signal detection method that can improve the characteristics of spatial and temporal iterative decoding that is based on turbo principles. According to the method, when implementing factorization of conditional probability referred to as “likelihood” such that the conditional probability can be represented by the product of a plurality of conditional probabilities, the conditional probability being obtained for a received signal sequence in a spatial and temporal iterative decoding configuration based on turbo principles of soft-input soft-output detector 1 and soft-input soft-output decoder 2, the conditional probability for which factorization is possible is divided into a plurality of groups. When calculating this likelihood, the ordering among groups in which probabilities are calculated can be ordered such that groups that contain events that serve as the conditions of conditional probabilities in the groups are processed earlier. When calculating the probabilities in the groups, a metric operation method is used that uses semi-rings for estimating transmission sequences by means of the ratio of likelihoods of two exclusive events.

摘要翻译： 本发明旨在提供一种可以改善基于turbo原理的空间和时间迭代解码特性的空间复用信号检测方法。 根据该方法，当将条件概率的因式分解称为“似然性”，使得条件概率可以由多个条件概率的乘积表示时，在空间和时间上为接收信号序列获得的条件概率 基于软输入软输出检测器1和软输入软输出解码器2的turbo原理的迭代解码配置，可将因子分解的条件概率分为多个组。 在计算这种可能性时，可以排序计算概率的组之间的排序，使得包含用作组中的条件概率的条件的事件的组被更早地处理。 当计算组中的概率时，使用度量运算方法，其使用半环来通过两个排他事件的可能性的比率估计传输序列。

公开(公告)号：US6088382A

公开(公告)日：2000-07-11

申请号：US980531

申请日：1997-12-01

申请人： Tsuguo Maru

发明人： Tsuguo Maru

IPC分类号： H04J13/00 ,  H04B1/7083 ,  H04B1/709 ,  H04B7/26 ,  H04L7/00 ,  H04B1/707

CPC分类号： H04B1/70752 ,  H04B7/2628 ,  H04B1/708 ,  H04B2201/70707

摘要： A cell search circuit which does not invite an increase in search time, even if coherent integration is performed, and which minimizes an increase in the scale of the circuitry. The circuit comprises a spread signal generator having a phase shifting function, a multiplier for multiplying an output of the spread signal generator by an input signal, a ring buffer accumulating results of correlation, performed a number of times, in order to perform coherent integration over a plurality of signals, and an accumulator constructed by a single-signal portion of the ring buffer and an adder. Integration is performed over a length of time the same as unit-signal duration prior to spreading, coherent integration is performed by summing results of time integration of each signal, which results have been accumulated in the ring buffer, and the shifting operation of the spread signal generator is controlled based upon results of coherent integration.

摘要翻译： 即使执行相干整合，也不会增加搜索时间的小区搜索电路，并且使电路规模的增加最小化。 电路包括具有相移功能的扩展信号发生器，用于将扩展信号发生器的输出乘以输入信号的乘法器，积累相关结果的环形缓冲器，执行多次，以执行相干积分 多个信号，以及由环形缓冲器的单信号部分和加法器构成的累加器。 在扩展之前，在与单位信号持续时间相同的时间长度上进行积分，通过将结果已经积累在环形缓冲器中的每个信号的时间积分的结果相加以及扩展的移位操作来执行相干积分 基于相干积分的结果控制信号发生器。

公开(公告)号：US5430415A

公开(公告)日：1995-07-04

申请号：US226547

申请日：1994-04-12

申请人： Tsuguo Maru

发明人： Tsuguo Maru

IPC分类号： H03M7/30 ,  H04L27/00 ,  H04L27/20 ,  H04Q7/38 ,  H03C3/00

CPC分类号： H04L27/2032

摘要： In a modulator supplied with an input digital signal for outputting an output signal therefrom in accordance with the input digital signal, the modulator has a first producing section for producing a phase information signal on the basis of the input digital signal. The phase information signal is representative of phase information of the input digital signal. A memory section memorizes an impulse response data of the phase information that has a predetermined data length. An accessing section accesses the memory section to produce impulse response values of the impulse response data in accordance with the phase information signal. A second producing section produces a modulated signal on the basis of the impulse response values. A shaping section shapes the modulated signal into a shaped modulated signal in accordance with a predetermined window function to produce the shaped modulated signal as the output signal.

摘要翻译： 在提供有输入数字信号的调制器中，根据输入的数字信号输出其输出信号，调制器具有第一产生部分，用于根据输入的数字信号产生相位信息信号。 相位信息信号表示输入数字信号的相位信息。 存储部存储具有预定数据长度的相位信息的脉冲响应数据。 访问部分访问存储器部分，以根据相位信息信号产生脉冲响应数据的脉冲响应值。 第二产生部分基于脉冲响应值产生调制信号。 成形部根据预定的窗函数将调制信号形成成形的调制信号，以产生成形调制信号作为输出信号。