公开(公告)号：US20070160160A1

公开(公告)日：2007-07-12

申请号：US10584738

申请日：2004-12-24

申请人： Yoshikazu Kakura

发明人： Yoshikazu Kakura

IPC分类号： H04L1/02

CPC分类号： H04L5/023 ,  H04B1/713 ,  H04B7/0669 ,  H04L1/0006 ,  H04L1/0015 ,  H04L1/0045 ,  H04L1/0071 ,  H04L1/06 ,  H04L27/2608

摘要： In a transmitting portion of a wireless communication apparatus, hopping pattern generating portions 16 and 17 produce hopping patterns independent from each other and specific to a transmitter. Subcarrier assigning portions 18 and 19 assign transmission symbol sequences to subcarriers 1 to R in accordance with the hopping patterns and produce frequency hopping signals. In a receiving portion of the wireless communication apparatus, a MIMO demodulating portion 37 combines and decomposes a FFT signal and produces a demodulated signal. Hopping pattern generating portions 38 and 39 produce unique hopping patterns corresponding to transmitters 1-1 to 1-K, respectively. Subcarrier extracting portions 40 and 41 extract, from the demodulated signal, components corresponding to the hopping patterns and produce the components as partial demodulated sequences, respectively.

摘要翻译： 在无线通信装置的发送部分中，跳频图形生成部16,17产生彼此独立的特定于发送机的跳频图案。 子载波分配部分18和19根据跳频模式将传输符号序列分配给子载波1至R，并产生跳频信号。 在无线通信装置的接收部分中，MIMO解调部分37组合并分解FFT信号并产生解调信号。 跳跃模式产生部分38和39分别产生对应于发射机1-1-1K的独特的跳频模式。 副载波提取部分40和41从解调信号中提取与跳频图形对应的分量，并分别产生部分解调序列。

公开(公告)号：US06754263B1

公开(公告)日：2004-06-22

申请号：US09640889

申请日：2000-08-17

申请人： Yoshikazu Kakura

发明人： Yoshikazu Kakura

IPC分类号： H03H730

CPC分类号： H04L25/03178

摘要： An automatic equalizer is provided that can suppress errors in code decisions by constraining the selection of survivor paths in a Viterbi calculation. A constraint condition selection circuit 106 inputs the received signal and outputs constraint condition selection signals for selecting constraint conditions corresponding to the regularity of the code that is to be decided, a constraint condition generation circuit inputs kM series of candidate signals and constraint condition selection signals, selects the regularity of the code corresponding to the constraint condition selection signal, determines the constraint conditions for each of kM−1 states of a trellis diagram based on kM series of candidate signals, and outputs the constraint condition signal, and a Viterbi calculation circuit 103 inputs the kM estimated error signals and the constraint condition signals, and generates and outputs a decision output signal based on the kM estimated error signals and the constraint condition signal.

摘要翻译： 提供了一种自动均衡器，可以通过在维特比计算中约束幸存者路径的选择来抑制代码决策中的错误。 约束条件选择电路106输入接收信号并输出​​约束条件选择信号，用于选择对应于待决定的码的规则性的约束条件，约束条件生成电路输入候补信号的k个系列和约束条件 选择信号，选择与约束条件选择信号相对应的代码的规则性，基于k≠候选信号序列确定网格图的k 状态的约束条件，并输出约束 条件信号，维特比计算电路103输入k个估计的误差信号和约束条件信号，并且基于k个估计误差信号和约束条件信号产生并输出判定输出信号。

公开(公告)号：US09496944B2

公开(公告)日：2016-11-15

申请号：US14380359

申请日：2013-02-21

申请人： Boonsarn Pitakdumrongkija ,  Yoshikazu Kakura ,  Naoto Ishii

发明人： Boonsarn Pitakdumrongkija ,  Yoshikazu Kakura ,  Naoto Ishii

IPC分类号： H04B7/14 ,  H04B7/155 ,  H04W16/26 ,  H04W92/20 ,  H04W88/08

CPC分类号： H04B7/15507 ,  H04W16/26 ,  H04W88/085 ,  H04W92/20

摘要： A communication system and method that allows a DeNB to identify a RN registered to another DeNB and to acquire necessary information for coordinating interference from RNs registered to the other DeNB are provided. The communication system includes a plurality of communication nodes which includes a plurality of base stations and a plurality of relay nodes, wherein each relay node has a radio connection with a base station, wherein each base station exchanges information indicating identity of a relay node with another base station.

摘要翻译： 提供了一种通信系统和方法，其允许DeNB识别登记到另一DeNB的RN并且获取用于协调从登记到另一DeNB的RN的干扰的必要信息。 通信系统包括多个通信节点，其包括多个基站和多个中继节点，其中每个中继节点具有与基站的无线电连接，其中每个基站与另一个中继节点交换表示中继节点的身份的信息 基站。

公开(公告)号：US09014711B2

公开(公告)日：2015-04-21

申请号：US13496175

申请日：2009-09-15

申请人： Le Liu ,  Yoshikazu Kakura

发明人： Le Liu ,  Yoshikazu Kakura

IPC分类号： H04W72/04 ,  H04B7/00 ,  H04J11/00

CPC分类号： H04J11/0053

摘要： The object of the present invention is to provide a technology of deciding CoMP point dynamically by considering the spectrum efficiency after channel-dependent scheduling with different possible combinations of CoMP points. According to the present invention, A wireless communication system, characterized in deciding number of CoMP (coordinated multipoint transmission and reception) point to a user equipment by using information related to scheduling.

摘要翻译： 本发明的目的是提供一种通过考虑具有不同可能组合CoMP点的信道相关调度之后的频谱效率来动态地决定CoMP点的技术。 根据本发明，一种无线通信系统，其特征在于，通过使用与调度有关的信息，将用户设备的CoMP（协调多点发送和接收）点数确定为多个。

公开(公告)号：US08477754B2

公开(公告)日：2013-07-02

申请号：US11814131

申请日：2006-01-18

申请人： Yoshikazu Kakura

发明人： Yoshikazu Kakura

IPC分类号： H04B7/216

CPC分类号： H04W72/085 ,  H04B7/086 ,  H04W16/28 ,  H04W64/006 ,  H04W72/048

摘要： A wireless communication apparatus is provided that is capable of achieving both the suppression of interference between base stations and the capability to track mobile stations that are moving at a high speed. A moving speed estimating unit estimates the moving speed of each mobile station based on reception signals. A directivity determining unit determines reception antenna directivity for each mobile station based on the reception signals and the estimated moving speeds. A signal separating unit separates the reception signals into signal components that have been transmitted from respective mobile stations, based on the directivities. A signal recovering unit recovers transmission signals from respective mobile stations based on the respective signal components. A resource assigning unit determines radio resource assignments of transmission signals to the respective mobile stations based on a service quality signal and the estimated moving speed. A transmission signal generating unit generates transmission signals based on transmission information, the directivities, and the resource assignments. A transmission signal multiplexes the transmission signals, using the resource assignment signals, and outputs the multiplexed transmission signal.

摘要翻译： 提供了能够实现基站之间的干扰抑制和跟踪高速移动的移动站的能力的无线通信装置。 移动速度估计单元基于接收信号来估计每个移动站的移动速度。 方向性确定单元基于接收信号和估计的移动速度来确定每个移动台的接收天线方向性。 信号分离单元基于指向性将接收信号分离成从各个移动台发送的信号分量。 信号恢复单元基于相应的信号分量来恢复来自各个移动台的发送信号。 资源分配单元基于服务质量信号和估计的移动速度来确定到各个移动台的发送信号的无线资源分配。 发送信号生成部基于发送信息，方向性和资源分配生成发送信号。 发送信号使用资源分配信号复用发送信号，并输出复用后的发送信号。

公开(公告)号：US08422437B2

公开(公告)日：2013-04-16

申请号：US11908465

申请日：2006-03-31

申请人： Yoshikazu Kakura

发明人： Yoshikazu Kakura

IPC分类号： H04W4/00

CPC分类号： H04L25/0222 ,  H04B17/382 ,  H04L5/0007 ,  H04L5/0039 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/006 ,  H04L5/0085 ,  H04L25/0226 ,  H04L25/0232 ,  H04W72/06

摘要： A resource assignment method for a communication system provides a method to realize an estimate of channel with high accuracy for terminals which change channels rapidly. A resource assignment unit (102), supplied with channel information ISCI1 to NSCIN, determines assignment of resources to a first to a Nth terminals and outputs a resource assignment information SRA. A multiplex signal generating unit (103), supplied with the resource assignment information SRA, outputs a transmission signal STX. A resource selector (104), supplied with the channel information 1SCI1 to NSCIN and the relative position information SRP, determines the assignment of resources to the first to Nth terminals and outputs the resource assignment information SRA. A resource position generating unit (105), supplied with the resource assignment information SRA, calculates a relative position of an empty resource with respect to a multiplex position of a pilot signal and outputs the relative position information SRP.

摘要翻译： 一种用于通信系统的资源分配方法提供了一种快速改变信道的终端实现高精度信道估计的方法。 提供有信道信息ISCI1至NSCIN的资源分配单元（102）确定向第一至第N终端的资源分配，并输出资源分配信息SRA。 提供有资源分配信息SRA的复用信号生成单元（103）输出发送信号STX。 提供有信道信息1SCI1至NSCIN的资源选择器（104）和相对位置信息SRP确定向第一至第N终端的资源分配，并输出资源分配信息SRA。 提供有资源分配信息SRA的资源位置生成单元（105）计算空资源相对于导频信号的复用位置的相对位置，并输出相对位置信息SRP。

公开(公告)号：US20100157885A1

公开(公告)日：2010-06-24

申请号：US11997869

申请日：2006-08-22

申请人： Kenji Koyanagi ,  Yoshikazu Kakura ,  Jinsock Lee ,  Nahoko Kuroda

发明人： Kenji Koyanagi ,  Yoshikazu Kakura ,  Jinsock Lee ,  Nahoko Kuroda

IPC分类号： H04W40/00 ,  H04J3/06

CPC分类号： H04W36/0005 ,  H04W36/30 ,  H04W56/001 ,  H04W56/0045

摘要： There is provided a radio communication system in which a mobile station which has decided to switch a base station can immediately be synchronized with the base station to which switching is to be made. Each of the base stations creates a synchronization signal for the mobile station to synchronize with the base station from an upstream pilot signal received from the mobile station, creates upstream propagation quality information from the upstream pilot signal, and creates a downstream control signal including the synchronization information and the upstream propagation quality information, and transmits them. The mobile stations creates an upstream pilot signal, transmits the signal, receives a signal including a downstream control signal from each of the base stations, extracts the upstream propagation quality and information on synchronization with the base stations from the received downstream control signal, and selects an optimal base station from the received upstream propagation quality as a new current base station. If the selected base station is different from the current base station, the transmission timing of the upstream pilot signal is modified to the transmission timing based on the synchronization information extracted from the downstream control signal of the selected base station and transmitted.

摘要翻译： 提供了一种无线电通信系统，其中决定切换基站的移动台可以立即与要进行切换的基站同步。 每个基站创建一个同步信号，用于移动台根据从移动站接收的上行导频信号与基站同步，从上游导频信号创建上行传播质量信息，并创建包括同步的下行控制信号 信息和上游传播质量信息，并传输它们。 移动站创建上行导频信号，发送该信号，从每个基站接收包括下行控制信号的信号，从接收到的下游控制信号中提取上行传播质量和与基站同步的信息，并选择 从接收到的上游传播质量的最佳基站作为新的当前基站。 如果所选择的基站与当前基站不同，则基于从所选择的基站的下游控制信号提取的同步信息将上行导频信号的发送定时修改为发送定时，并发送。

公开(公告)号：US07526041B2

公开(公告)日：2009-04-28

申请号：US10554097

申请日：2004-04-26

申请人： Yoshikazu Kakura ,  Hiroyuki Atarashi ,  Noriyuki Maeda

发明人： Yoshikazu Kakura ,  Hiroyuki Atarashi ,  Noriyuki Maeda

IPC分类号： H04B15/00 ,  H04B1/69

CPC分类号： H04L25/0224

摘要： A channel estimation circuit of the present invention includes: a tentative channel estimation unit for performing channel estimation by making use of a received signal and outputting the result of estimation as a tentative channel estimation signal; a noise/interference power estimation unit for estimating noise and interference power by making use of the received signal and outputting the result of estimation as a noise/interference power estimation signal; a threshold decision unit for establishing a threshold signal by making use of the noise/interference power estimation signal to output the threshold signal; and an effective path detection unit for outputting, as a channel estimation signal, paths of the tentative channel estimation signal that remains after noise paths having powers smaller than the threshold signal have been removed.

摘要翻译： 本发明的信道估计电路包括：临时信道估计单元，用于通过使用接收信号进行信道估计，并将估计结果作为暂时信道估计信号输出; 噪声/干扰功率估计单元，用于通过使用接收信号来估计噪声和干扰功率，并将估计结果作为噪声/干扰功率估计信号输出; 阈值判定单元，用于通过利用噪声/干扰功率估计信号建立阈值信号，以输出阈值信号; 以及有效路径检测单元，用于作为信道估计信号输出在具有小于阈值信号的功率的噪声路径之后保留的临时信道估计信号的路径。

公开(公告)号：US20090028102A1

公开(公告)日：2009-01-29

申请号：US11908465

申请日：2006-03-31

申请人： Yoshikazu Kakura

发明人： Yoshikazu Kakura

IPC分类号： H04W40/02

CPC分类号： H04L25/0222 ,  H04B17/382 ,  H04L5/0007 ,  H04L5/0039 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/006 ,  H04L5/0085 ,  H04L25/0226 ,  H04L25/0232 ,  H04W72/06

摘要： A resource assignment method for a communication system provides a method to realize an estimate of channel with high accuracy for terminals which change channels rapidly. A resource assignment unit (102), supplied with channel information ISCL1 to NSCIN, determines assignment of resources to a first to a Nth terminals and outputs a resource assignment information SRA. A multiplex signal generating unit (103), supplied with the resource assignment information SRA, outputs a transmission signal STX. A resource selector (104), supplied with the channel information 1SCI1 to NSCIN and the relative position information SRP, determines the assignment of resources to the first to Nth terminals and outputs the resource assignment information SRA. A resource position generating unit (105), supplied with the resource assignment information SRA, calculates a relative position of an empty resource with respect to a multiplex position of a pilot signal and outputs the relative position information SRP.

摘要翻译： 一种用于通信系统的资源分配方法提供了一种快速改变信道的终端实现高精度信道估计的方法。 提供有信道信息ISCL1至NSCIN的资源分配单元（102）确定向第一至第N终端的资源分配，并输出资源分配信息SRA。 提供有资源分配信息SRA的复用信号生成单元（103）输出发送信号STX。 提供有信道信息1SCI1至NSCIN的资源选择器（104）和相对位置信息SRP确定向第一至第N终端的资源分配，并输出资源分配信息SRA。 提供有资源分配信息SRA的资源位置生成单元（105）计算空资源相对于导频信号的复用位置的相对位置，并输出相对位置信息SRP。

公开(公告)号：US06636559B1

公开(公告)日：2003-10-21

申请号：US09583935

申请日：2000-05-31

申请人： Yoshikazu Kakura

发明人： Yoshikazu Kakura

IPC分类号： H04B169

CPC分类号： H04L25/0202 ,  H04L25/0212

摘要： A channel response estimation circuit is provided that can estimate a channel longer than a correlation code sequence length. The pattern detection circuit 103 detects a symbol pattern corresponding to an estimated channel length. An inverse matrix for correction corresponding to the detected symbol pattern is input to the correlator-output correction circuit 107. The estimation range selection circuit 105 determines the estimation range. A channel longer than the correlation code sequence length can be estimated by multiplying the correlator-output corresponding to an estimation range selected in the correlator-output correction circuit 107 by the inverse matrix for correction.

摘要翻译： 提供了可以估计比相关码序列长度更长的信道的信道响应估计电路。 模式检测电路103检测与估计的信道长度对应的符号模式。 将与检测符号图案相对应的用于校正的逆矩阵输入到相关器输出校正电路107.估计范围选择电路105确定估计范围。 可以通过将相关器输出校正电路107中选择的估计范围对应的相关器输出乘以用于校正的逆矩阵来估计长于相关码序列长度的信道。