公开(公告)号：US20070117582A1

公开(公告)日：2007-05-24

申请号：US11624313

申请日：2007-01-18

申请人： Shinzo Ohkubo ,  Hitoshi Yoshino ,  Shiro Kikuchi ,  Toru Otsu

发明人： Shinzo Ohkubo ,  Hitoshi Yoshino ,  Shiro Kikuchi ,  Toru Otsu

IPC分类号： H04B7/00 ,  H04B1/00

CPC分类号： H04W52/54 ,  H04W52/143 ,  H04W52/245 ,  H04W52/248 ,  H04W52/327

摘要： The present invention relates to a radio communication system comprising base stations and mobile stations and a method for controlling transmission power in the system where the base station is able to perform multi-point transmission for transmitting the same signal to a plurality of the mobile stations. In the present invention, the mobile station targeted for the multi-point transmission provides the base station of an increase request or a decrease request of the transmission power by respectively transmitting or not transmitting a predetermined signal to the base station.

摘要翻译： 本发明涉及一种包括基站和移动站的无线电通信系统，以及一种用于控制系统中的发射功率的方法，其中基站能够执行多点传输以将相同的信号发射到多个移动台。 在本发明中，针对多点传输的移动台通过分别向基站发送或不发送预定信号来向基站提供发送功率的增加请求或减少请求。

公开(公告)号：US07190930B2

公开(公告)日：2007-03-13

申请号：US10398216

申请日：2002-08-09

申请人： Shinzo Ohkubo ,  Hitoshi Yoshino ,  Shiro Kikuchi ,  Toru Otsu

发明人： Shinzo Ohkubo ,  Hitoshi Yoshino ,  Shiro Kikuchi ,  Toru Otsu

IPC分类号： H04B17/00

CPC分类号： H04W52/54 ,  H04W52/143 ,  H04W52/245 ,  H04W52/248 ,  H04W52/327

摘要： The present invention relates to a radio communication system comprising base stations and mobile stations and a method for controlling transmission power in the system where the base station is able to perform multi-point transmission for transmitting the same signal to a plurality of the mobile stations. In the present invention, the mobile station targeted for the multi-point transmission provides the base station of an increase request or a decrease request of the transmission power by respectively transmitting or not transmitting a predetermined signal to the base station.

摘要翻译： 本发明涉及一种包括基站和移动站的无线电通信系统，以及一种用于控制系统中的发射功率的方法，其中基站能够执行多点传输以将相同的信号发射到多个移动台。 在本发明中，针对多点传输的移动台通过分别向基站发送或不发送预定信号来向基站提供发送功率的增加请求或减少请求。

公开(公告)号：US20060250935A1

公开(公告)日：2006-11-09

申请号：US10547428

申请日：2004-02-27

申请人： Kozue Hamamoto ,  Hitoshi Yoshino ,  Toru Otsu

发明人： Kozue Hamamoto ,  Hitoshi Yoshino ,  Toru Otsu

IPC分类号： H04J11/00

CPC分类号： H04L5/0032 ,  H04L5/0007 ,  H04L5/0035 ,  H04L5/0039 ,  H04L5/0044 ,  H04L5/0064 ,  H04L25/0222

摘要： A radio communication system for carrying out communications between radio stations by modulating a plurality of signal sequences to be transmitted and received into at least one frequency channel assigned to each of a plurality of cells is formed by a channel mapping means for rearranging for each cell a plurality of frequency channels assigned with respect to each cell, and newly assigning particular frequency channels as a transmission and reception band of said signal sequences, and a bandwidth control means for controlling a bandwidth of said assigned frequency channel according to a propagation state of said assigned frequency channel.

摘要翻译： 一种无线电通信系统，用于通过将分配给多个小区中的每一个小区的至少一个频率信道调制出的要传送和接收的多个信号序列进行无线电台之间的通信来形成通道映射装置，用于对每个小区进行重新排列 针对每个小区分配的多个频道，以及新分配特定频道作为所述信号序列的发送和接收频带;以及带宽控制装置，用于根据所述分配的传播状态的传播状态来控制所述分配的频道的带宽 频道。

公开(公告)号：US20060193393A1

公开(公告)日：2006-08-31

申请号：US11353148

申请日：2006-02-14

申请人： Jiyun Shen ,  Hiromasa Fujii ,  Takahiro Asai ,  Hitoshi Yoshino

发明人： Jiyun Shen ,  Hiromasa Fujii ,  Takahiro Asai ,  Hitoshi Yoshino

IPC分类号： H04K1/10

CPC分类号： H04L27/2621

摘要： An OFDM transmitter is configured to perform a peak reduction process on a signal sequence to be transmitted in a stepwise manner to transmit a peak processed transmission signal. The OFDM transmitter includes a dividing inverse fast Fourier transform unit (104) configured to divide the signal sequence to be transmitted into N signal sequences (N>2) and perform inverse fast Fourier transform on each of the divided signal sequences to output N time signal sequences; a threshold control unit (106) configured to determine at least two threshold values (Cth) used in the stepwise peak reduction process; and a first peak reduction processing unit (1201) configured to determine a first cyclic shift to be applied to one of the time signal sequences based on a first one of the threshold values, produce a first cyclically shifted signal sequence according to the first cyclic shift, and output a first peak processed signal sequence based on the first cyclically shifted signal sequence. The first cyclic shift is determined such that an exceeding power level over the first threshold value in the first peak processed signal sequence becomes the minimum.

摘要翻译： OFDM发送器被配置为对要以逐步方式发送的信号序列执行峰值降低处理，以发送峰值处理的发送信号。 所述OFDM发射机包括：分频逆快速傅里叶变换单元，被配置为将要发送的信号序列划分为N个信号序列（N> 2），并对每个分割信号序列进行快速傅立叶逆变换，以输出N个时间信号 序列; 阈值控制单元（106），被配置为确定在所述逐步峰值降低处理中使用的至少两个阈值（C SUB）; 以及第一峰值缩减处理单元（120“1”），其被配置为基于所述阈值中的第一个来确定要施加到所述时间信号序列之一的第一循环移位，产生第一循环移位 信号序列，并且基于第一循环移位信号序列输出第一峰值处理信号序列。 确定第一循环移位，使得在第一峰值处理信号序列中超过第一阈值的超过功率电平变为最小。

公开(公告)号：US20060109931A1

公开(公告)日：2006-05-25

申请号：US11266321

申请日：2005-11-04

申请人： Takahiro Asai ,  Tetsushi Abe ,  Hitoshi Yoshino

发明人： Takahiro Asai ,  Tetsushi Abe ,  Hitoshi Yoshino

IPC分类号： H04B7/06 ,  H04B7/10

CPC分类号： H04L27/0012 ,  H04B1/0003 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L25/03006

摘要： A receiver for mobile communication includes a wireless scheme parameter storing unit (23) configured to store a plurality of characteristics of multiple wireless schemes, a wireless scheme estimation unit (22) configured to estimate one of the characteristics of a currently used wireless scheme from a received signal and select one of the wireless schemes corresponding to the estimated characteristic from the wireless scheme parameter storing unit, and a demodulator (24) configured to demodulate the received signal based on the selected wireless scheme.

摘要翻译： 一种用于移动通信的接收机包括被配置为存储多个无线方案的多个特征的无线方案参数存储单元（23），被配置为从一个或多个无线方案中估计当前使用的无线方案的特征之一的无线方案估计单元 接收信号，并且从无线方案参数存储单元中选择与估计特性相对应的无线方案之一，以及解调器（24），被配置为基于所选择的无线方案来解调所接收的信号。

公开(公告)号：US20060063543A1

公开(公告)日：2006-03-23

申请号：US11232009

申请日：2005-09-22

申请人： Naoto Matoba ,  Masashige Shirakabe ,  Takatoshi Sugiyama ,  Hitoshi Yoshino

发明人： Naoto Matoba ,  Masashige Shirakabe ,  Takatoshi Sugiyama ,  Hitoshi Yoshino

IPC分类号： H04B1/04 ,  H04Q7/20 ,  H04B1/02

CPC分类号： H04L1/0009 ,  H04L1/0003 ,  H04L1/0071 ,  H04L1/04 ,  H04W16/14 ,  H04W72/0453 ,  H04W72/1215 ,  H04W72/1226 ,  H04W88/06 ,  H04W88/10

摘要： A transmitter used in the multiband environment includes a frequency allocation unit (106) configured to select and allocate a frequency band that satisfies a user QoS from among multiple separate frequency bands currently available for the user, a parameter determination unit (111) configured to determine a transmission parameter required for signal transmission based on the allocated frequency band, and a multi-user scheduling control unit (110) configured to determine a transmission schedule for multiple users taking into account the frequency bands allocated to the multiple users.

摘要翻译： 在多频带环境中使用的发射机包括：频率分配单元（106），被配置为从当前可用于用户的多个分离频带中选择并分配满足用户QoS的频带;参数确定单元（111），被配置为： 基于分配的频带进行信号传输所需的传输参数;以及多用户调度控制单元，被配置为考虑分配给多个用户的频带来确定多个用户的传输调度。

公开(公告)号：US20060050811A1

公开(公告)日：2006-03-09

申请号：US11215041

申请日：2005-08-31

申请人： Tetsushi Abe ,  Hui Shi ,  Takahiro Asai ,  Hitoshi Yoshino

发明人： Tetsushi Abe ,  Hui Shi ,  Takahiro Asai ,  Hitoshi Yoshino

IPC分类号： H04B7/06 ,  H04B7/02

CPC分类号： H04W16/14 ,  H04B1/1027 ,  H04B15/02

摘要： A shared frequency transmitter for use in a network environment where transmitters and receivers of plural radio communication systems in which the same frequency is used exist is disclosed. The shared frequency transmitter includes (a) a communicating unit configured to detect peripheral transmitters existing in a peripheral area, and to exchange information with the detected peripheral transmitters; and (b) a signal generating unit configured to generate a transmit signal by applying an interference cancellation technique based on the information obtained through the exchange of information.

摘要翻译： 一种用于存在使用相同频率的多个无线电通信系统的发射机和接收机的网络环境中的共享频率发射机。 共享频率发射机包括：（a）通信单元，被配置为检测存在于外围区域中的外围发射机，并与检测到的外围发射机交换信息; 以及（b）信号生成单元，被配置为基于通过信息交换获得的信息应用干扰消除技术来生成发送信号。

公开(公告)号：US20060050655A1

公开(公告)日：2006-03-09

申请号：US11213883

申请日：2005-08-30

申请人： Hui Shi ,  Tetsushi Abe ,  Takahiro Asai ,  Hitoshi Yoshino

发明人： Hui Shi ,  Tetsushi Abe ,  Takahiro Asai ,  Hitoshi Yoshino

IPC分类号： H04L12/28

CPC分类号： H04B7/026 ,  H04B7/15528 ,  H04L1/0618 ,  H04L25/0204 ,  H04L25/0228 ,  H04L25/0246 ,  H04L25/20 ,  H04W52/46 ,  H04W88/04

摘要： A communication node that relays signals between a source node and a destination node includes (a) a first unitary matrix calculation unit configured to calculate a first unitary matrix based on a first channel between the source node and the relay node, (b) a second unitary matrix calculation unit configured to calculate a second unitary matrix based on a second channel between the relay node and the destination node, (c) a transformation matrix estimation unit configured to estimate a transformation matrix based on a triangular matrix derived from QR decomposition of the first and/or second channel matrix, (d) a relaying signal generator configured to generates a relaying signal by multiplying a received signal by at least one of the first unitary matrix, the second unitary matrix, and the transformation matrix, and (e) a transmission unit configured to transmit the relaying signal to the destination node.

公开(公告)号：US20050259565A1

公开(公告)日：2005-11-24

申请号：US11121077

申请日：2005-05-04

申请人： Hiromasa Fujii ,  Jiyun Shen ,  Takahiro Asai ,  Hitoshi Yoshino

发明人： Hiromasa Fujii ,  Jiyun Shen ,  Takahiro Asai ,  Hitoshi Yoshino

IPC分类号： H04J11/00 ,  H04B1/04 ,  H04L27/26

CPC分类号： H04L27/2614

摘要： A radio transmitter adopting the OFDM scheme is disclosed. The radio transmitter includes an amplitude measuring part for measuring the amplitude of a transmission signal on which inverse Fourier transform has been performed; a power control part for outputting, based on the result of the measurement, control signals each for adjusting the amplitude of a signal on which inverse Fourier transform has not been performed, each signal corresponding to one of plural sub-carriers; and multiple multiplying parts each for multiplying the amplitude of the signal by a multiplying number indicated by the control signal. The power control part outputs the control signal based on a product of a signal pf(n) obtained by performing Fourier transform on an output of the amplitude measuring part and the signal sf(n).

摘要翻译： 公开了采用OFDM方案的无线电发射机。 无线电发射机包括用于测量其上进行了傅立叶逆变换的传输信号的幅度的幅度测量部分; 功率控制部分，用于基于测量结果输出用于调整未进行傅立叶逆变换的信号的振幅的控制信号，每个信号对应于多个子载波中的一个; 以及多个乘法器，用于将信号的振幅乘以由控制信号指示的乘数。 功率控制部分基于通过对振幅测量部分的输出执行傅里叶变换而得到的信号p（n）（n）的乘积和信号s （n）。

公开(公告)号：US20050195922A1

公开(公告)日：2005-09-08

申请号：US11046841

申请日：2005-02-01

申请人： Koji Maeda ,  Satoru Fukumoto ,  Hitoshi Yoshino

发明人： Koji Maeda ,  Satoru Fukumoto ,  Hitoshi Yoshino

IPC分类号： H04J99/00 ,  H04B1/10 ,  H04L25/03 ,  H04L27/06

CPC分类号： H04L25/0328 ,  H04B2201/70703 ,  H04L25/03254 ,  H04L25/03292 ,  H04L2025/03375 ,  H04L2025/0349

摘要： A signal separator for separating multiple signals contained in a received signal from each other based on a replica of the received signal is provided. The signal separator comprises a sampling unit configured to sample the received signal at a prescribed sampling timing; an index output unit configured to monitor sampling counts of the sampling unit and output an index signal representing a remainder of a division dividing the sampling counts by a sampling number per a prescribed time period to group the sampled signals; a coefficient-variable filter configured to generate and output a replica of the received signal based on a channel estimation value and a signal point candidate, at least one of the channel estimation value and the signal point candidate being generated according to the index signal; a subtractor configured to subtract the replica from the sampled signal and output a subtraction result as a residual signal; and a maximum likelihood sequence estimator configured to estimate a sequence for each of the multiple signals based on the residual signal, taking into account signal state transition, and output the estimation result at a signal output timing determined by the index signal.

摘要翻译： 提供了一种信号分离器，用于基于接收信号的副本将包含在接收信号中的多个信号彼此分离。 信号分离器包括：采样单元，被配置为在规定的采样定时对接收信号进行采样; 索引输出单元，被配置为监视采样单元的采样计数，并输出表示采样计数除以每个规定时间段的采样数的除法余数的索引信号，以对采样信号进行分组; 系数可变滤波器，被配置为基于信道估计值和信号点候选来生成并输出接收信号的副本，根据索引信号生成信道估计值和信号点候补中的至少一个; 减法器，被配置为从所述采样信号中减去所述副本，并将减法结果作为残差信号输出; 以及最大似然序列估计器，被配置为基于所述残差信号来估计每个所述多个信号的序列，并考虑信号状态转换，并且在由所述索引信号确定的信号输出定时输出所述估计结果。