公开(公告)号：US07251272B2

公开(公告)日：2007-07-31

申请号：US09933038

申请日：2001-08-21

申请人： Sadaki Futagi ,  Mitsuru Uesugi ,  Tadashi Matsumoto

发明人： Sadaki Futagi ,  Mitsuru Uesugi ,  Tadashi Matsumoto

IPC分类号： H03H7/30

CPC分类号： H04L25/0206 ,  H04B1/1081 ,  H04L25/03343 ,  H04W52/242 ,  H04W52/248

摘要： Noise generating section 106 generates noise data of a white Gaussian noise, and noise adding section 107 adds received data and the noise data. Channel estimating section 108 performs channel estimation using the added data output from noise adding section 107. At this point, when a level of a preceding signal is equal to or less than that of the noise data, channel estimating section 108 is not capable of detecting the preceding signal. Accordingly, in the case where a received level of a preceding signal is extremely lower than that of a delayed signal and a noise level is further lower than the received level of the preceding signal, it is possible to perform pre-equalization using the delayed signal as a desired signal, whereby it is possible to maintain the reception characteristic of a communication partner.

摘要翻译： 噪声生成部106生成白高斯噪声的噪声数据，噪声添加部107将接收到的数据和噪声数据相加。 信道估计部108使用从噪声添加部107输出的相加数据进行信道估计。 此时，当前一信号的电平等于或小于噪声数据的电平时，信道估计部分108不能检测前一信号。 因此，在前一信号的接收电平比延迟信号的接收电平低得多并且噪声电平进一步低于先前信号的接收电平的情况下，可以使用延迟信号进行预均衡 作为期望的信号，由此可以保持通信伙伴的接收特性。

公开(公告)号：US06032029A

公开(公告)日：2000-02-29

申请号：US822834

申请日：1997-03-24

申请人： Sadaki Futagi ,  Mitsuru Uesugi ,  Hiroshi Suzuki ,  Hitoshi Yoshino

发明人： Sadaki Futagi ,  Mitsuru Uesugi ,  Hiroshi Suzuki ,  Hitoshi Yoshino

IPC分类号： H03H17/02 ,  H04B3/06 ,  H04L25/03 ,  H04L27/22 ,  H04L27/227 ,  H04B1/10

CPC分类号： H04L27/22 ,  H04L25/03057

摘要： An equalizer block forming part of a receiver compensates transmission path characteristics of a baseband received signal to generate a prediction signal, and differential-logic-converts a demodulated signal generated by demodulating the prediction signal to generate a differential-logic-conversion demodulated signal. A differential-detection demodulator block differential-detects the prediction signal from the equalizer block and subsequently demodulates the differential-detected prediction signal to generate a differential-detection demodulated signal. A selector block selects either the differential-logic-conversion demodulated signal from the equalizer block or the differential-detection demodulated signal from the difference-detection demodulator block.

摘要翻译： 构成接收机的一部分的均衡器块补偿基带接收信号的传输路径特性，生成预测信号，对解调后的解调信号进行差分逻辑转换，生成差分逻辑转换解调信号。 差分检测解调器块差分检测来自均衡器块的预测信号，并随后解调差分检测的预测信号以产生差分检测解调信号。 选择器块选择来自均衡器块的差分逻辑转换解调信号或来自差分检测解调器块的差分检测解调信号。

公开(公告)号：US06289064B1

公开(公告)日：2001-09-11

申请号：US08810767

申请日：1997-03-05

申请人： Katsuhiko Hiramatsu ,  Mitsuru Uesugi ,  Sadaki Futagi ,  Hiroshi Suzuki ,  Hitoshi Yoshino

发明人： Katsuhiko Hiramatsu ,  Mitsuru Uesugi ,  Sadaki Futagi ,  Hiroshi Suzuki ,  Hitoshi Yoshino

IPC分类号： H04L700

CPC分类号： H04L7/042 ,  H04L7/08

摘要： A synchronization equipment performs correlation processing between a first known pattern included in a received signal and a second known pattern, and detects reception timing of the received signal. A correlation value computing portion computes a correlation value between the first known pattern and the second known pattern at every reception time. A reception timing detection portion compares the computed related value with a predetermined threshold value, determines the reception time when the correlation value becomes larger than the threshold value to be the reception timing of a received signal, and, after this determination, suspends the comparison between the correlation value and the threshold value, and holds the reception time determined to be the reception timing.

摘要翻译： 同步设备执行包括在接收信号中的第一已知模式与第二已知模式之间的相关处理，并检测接收信号的接收定时。 相关值计算部分在每个接收时间计算第一已知模式和第二已知模式之间的相关值。 接收定时检测部分将计算出的相关值与预定阈值进行比较，当相关值变得大于阈值以确定接收信号的接收定时时的接收时间，并且在该确定之后，暂停比较 相关值和阈值，并将接收时间确定为接收定时。

公开(公告)号：US5748673A

公开(公告)日：1998-05-05

申请号：US594536

申请日：1996-01-31

申请人： Sadaki Futagi ,  Mitsuru Uesugi

发明人： Sadaki Futagi ,  Mitsuru Uesugi

IPC分类号： H03H21/00 ,  H04B3/04 ,  H04B7/005 ,  H04B7/08 ,  H04L25/03 ,  H03H7/30 ,  H03H7/40

CPC分类号： H04B7/0845 ,  H04B7/0851 ,  H04L25/03063 ,  H04L2025/0349 ,  H04L2025/03509

摘要： A data receiving apparatus comprising: a receiving portion for receiving a desired radio wave signal including a desired baseband signal and an interference radio wave signal including an interference baseband signal, the desired radio wave signal and the interference radio wave signal having substantially the same frequency; first weighting circuit for weighting an output of the receiving circuit with a first coefficient adaptively renewed such that the desired baseband signal is reproduced; a subtracting circuit coupled to the first weighting circuit; a first judging circuit coupled to the first subtracting circuit; a second weighting circuit for weighting the baseband signal with a second coefficient adaptively renewed such that the interference baseband signal is reproduced; a second judging circuit coupled to the second weighting circuit; and a supplying circuit for supplying the reproduced interference baseband signal to the subtracting circuit, the subtracting circuit effecting a subtraction between an output of the first weighting circuit and an output of the supplying circuit. Modifications for diversity receiving, delayed component cancelling, receiving timing adjusting are also disclosed.

摘要翻译： 一种数据接收装置，包括：接收部分，用于接收包括期望的基带信号的期望无线电波信号和包括干扰基带信号的干扰无线电波信号，所述无线电波信号和具有基本相同频率的干扰无线电波信号; 第一加权电路，用于以自适应地更新的第一系数对接收电路的输出进行加权，使得再现所需的基带信号; 耦合到所述第一加权电路的减法电路; 耦合到所述第一减法电路的第一判断电路; 第二加权电路，用于以自适应地更新的第二系数对所述基带信号进行加权，使得所述干扰基带信号被再现; 耦合到所述第二加权电路的第二判断电路; 以及提供电路，用于将再现的干扰基带信号提供给减法电路，减法电路实现第一加权电路的输出与提供电路的输出之间的减法。 还公开了分集接收，延迟分量消除，接收定时调整的修改。

公开(公告)号：US5659584A

公开(公告)日：1997-08-19

申请号：US593956

申请日：1996-01-30

申请人： Mitsuru Uesugi ,  Sadaki Futagi ,  Koichi Homma

发明人： Mitsuru Uesugi ,  Sadaki Futagi ,  Koichi Homma

IPC分类号： H03H21/00 ,  H04B1/12 ,  H04B3/04 ,  H04B7/005 ,  H04B7/08 ,  H04L1/06 ,  H04L25/03 ,  H04B7/10

CPC分类号： H04L25/03057 ,  H04B1/126 ,  H04B7/0845 ,  H04L1/06 ,  H04L2025/0349

摘要： A data signal composed of a desired signal faded and delayed and an interference signal faded and delayed is received by a pair of antennas. A direct component of the interference signal and a delay component of the desired signal are removed from the data signals received by the antennas in a decision-feedback type of desired signal equalizing unit, and the direct component of the desired signal and the delay component of the interference signal are removed from the data signals in a decision-feedback type of interference signal equalizing unit. Also, a delay component of the interference signal is removed in the desired signal equalizing unit by subtracting a replica of the delay component of the interference signal produced in a backward tap from a demodulated interference signal produced in the interference signal equalizing unit in a previous operation, and a delay component of the desired signal is removed in the interference signal equalizing unit by subtracting a replica of the delay component of the desired signal produced in another backward tap from a demodulated desired signal produced in the desired signal equalizing unit in the previous operation. Therefore, the demodulated desired signal agreeing with the desired signal is output from the desired signal equalizing unit, and the demodulated interference signal agreeing with the interference signal is output from the interference signal equalizing unit.

摘要翻译： 由一对天线接收由期望信号褪色和延迟组成的数据信号和衰落和延迟的干扰信号。 干扰信号的直接分量和期望信号的延迟分量从期望信号均衡单元的判决反馈类型中的天线接收的数据信号中去除，并且期望信号和延迟分量的直接分量 干扰信号在干扰信号均衡单元的判决反馈型中从数据信号中去除。 此外，通过从先前的操作中在干扰信号均衡单元中产生的解调干扰信号中减去在后向抽头中产生的干扰信号的延迟分量的副本，在期望的信号均衡单元中去除干扰信号的延迟分量 并且在干扰信号均衡单元中通过从先前操作中在所需信号均衡单元中产生的解调的期望信号中减去在另一个反向抽头中产生的期望信号的延迟分量的副本来去除所需信号的延迟分量 。 因此，从期望信号均衡单元输出与期望信号一致的解调的期望信号，并且从干扰信号均衡单元输出与干扰信号一致的解调干扰信号。

公开(公告)号：US10263744B2

公开(公告)日：2019-04-16

申请号：US13146611

申请日：2010-01-28

申请人： Takashi Iwai ,  Sadaki Futagi ,  Tomohumi Takata ,  Daichi Imamura ,  Yoshihiko Ogawa

发明人： Takashi Iwai ,  Sadaki Futagi ,  Tomohumi Takata ,  Daichi Imamura ,  Yoshihiko Ogawa

IPC分类号： H04L5/00 ,  H04L25/02 ,  H04L27/26 ,  H04L25/03

摘要： Disclosed are a wireless transmitter and a reference signal transmission method that improve channel estimation accuracy. In a terminal (100), which transmits a reference signal using n (n is a non-negative integer 2 or greater) band blocks (which correspond to clusters here), which are disposed with spaces therebetween in a frequency direction, a reference signal controller (106) switches the reference signal formation method of a reference signal generator (107) between a first formation method and a second formation method based on the number (n) of band blocks. In addition, a threshold value setting unit (105) adjusts a switching threshold value based on the frequency spacing between band blocks. Thus, the reference signal formation method can be selected with good accuracy and, as a result, channel estimation accuracy is further improved.

公开(公告)号：US08750235B2

公开(公告)日：2014-06-10

申请号：US13614417

申请日：2012-09-13

申请人： Daichi Imamura ,  Takashi Iwai ,  Kazunori Inogai ,  Sadaki Futagi ,  Atsushi Matsumoto

发明人： Daichi Imamura ,  Takashi Iwai ,  Kazunori Inogai ,  Sadaki Futagi ,  Atsushi Matsumoto

IPC分类号： H04W72/00 ,  H04W72/04

CPC分类号： H04W74/0833 ,  H04B1/707 ,  H04B1/7083 ,  H04B2201/70702 ,  H04B2201/70713 ,  H04J13/0062 ,  H04J13/102 ,  H04J13/22 ,  H04L5/0048 ,  H04L23/02 ,  H04L27/2613 ,  H04W72/04 ,  H04W72/0446 ,  H04W72/0453 ,  H04W74/0875

摘要： A sequence allocating method and apparatus wherein in a system where a plurality of different Zadoff-Chu sequences or GCL sequences are allocated to a single cell, the arithmetic amount and circuit scale of a correlating circuit at a receiving end can be reduced. In ST201, a counter (a) and a number (p) of current sequence allocations are initialized, and in ST202, it is determined whether the number (p) of current sequence allocations is coincident with a number (K) of allocations to one cell. In ST203, it is determined whether the number (K) of allocations to the one cell is odd or even. If K is even, in ST204-ST206, sequence numbers (r=a and r=N−a), which are not currently allocated, are combined and then allocated. If K is odd, in ST207-ST212, for sequences that cannot be paired, one of sequence numbers (r=a and r=N−a), which are not currently allocated, is allocated.

摘要翻译： 一种序列分配方法和装置，其中在将多个不同的Zadoff-Chu序列或GCL序列分配给单个小区的系统中，可以减少接收端的相关电路的算术量和电路规模。 在ST201中，初始化当前序列分配的计数器（a）和数量（p），并且在ST202中，确定当前序列分配的数量（p）是否与一个分配的数量（K）一致 细胞。 在ST203中，确定对一个单元的分配的数量（K）是奇数还是偶数。 如果K是偶数，则在ST204-ST206中，组合然后分配未被分配的序列号（r = a和r = N-a）。 如果K是奇数，则在ST207-ST212中，对于不能配对的序列，分配未分配的序列号（r = a和r = N-a）中的一个。

公开(公告)号：US08441936B2

公开(公告)日：2013-05-14

申请号：US13406374

申请日：2012-02-27

申请人： Sadaki Futagi ,  Daichi Imamura ,  Atsushi Matsumoto ,  Takashi Iwai

发明人： Sadaki Futagi ,  Daichi Imamura ,  Atsushi Matsumoto ,  Takashi Iwai

IPC分类号： H04L12/26

CPC分类号： H04W52/262 ,  H04L1/0003 ,  H04L1/0004 ,  H04L1/0005 ,  H04L1/0009 ,  H04L1/001 ,  H04L1/0011 ,  H04L1/0016 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0046 ,  H04L5/0058 ,  H04L5/006 ,  H04L27/2614 ,  H04W52/267 ,  H04W72/042 ,  H04W72/08 ,  Y10S370/914

摘要： Provided is a communication device, which is enabled to improve the throughput of a communication system by reducing the difference of a transmission power between an SCCH and an SDCH thereby to satisfy the required quality of a PAPR. In this device, an MCS selection unit (111) of a transmission unit (110) decides, with reference to a CQI lookup table, an MCS pattern (MCS1) of the SDCH, an MCS pattern (MCS2) of the SCCH and information (multiplex information) on multiplex positions on the time axes of those two channels, on the basis of the CQI information. On the basis of the MCS2 and the MCS1, encoding modulation units (112 and 113) perform encoding and modulating operations. According to the multiplex information, a channel multiplexing unit (114) time-division multiplexes the SCCH and the SDCH thereby to generate a transmission signal.

公开(公告)号：US08351385B2

公开(公告)日：2013-01-08

申请号：US12679268

申请日：2008-09-19

申请人： Daichi Imamura ,  Akihiko Nishio ,  Seigo Nakao ,  Sadaki Futagi ,  Tomofumi Takata

发明人： Daichi Imamura ,  Akihiko Nishio ,  Seigo Nakao ,  Sadaki Futagi ,  Tomofumi Takata

IPC分类号： H04W4/00

CPC分类号： H04L1/1854 ,  H04J13/0059 ,  H04J13/0074 ,  H04L1/1861 ,  H04L5/0007 ,  H04L5/0041 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0064 ,  H04L5/0091 ,  H04L5/0092

摘要： It is possible to provide a radio communication base station device, a radio communication terminal device, and a response signal allocation method which perform D-ACK and P-ACK resource allocation while maintaining a high use efficiency of the upstream line control channel of PUCCH or the like. When a plurality of CCE are allocated upon PDCCH transmission, PUCCH resources corresponding to odd CCE numbers are allocated for D-ACK and PUCCH resources corresponding to even CCE numbers are allocated for P-ACK among a plurality of CCE numbers which can be used.

摘要翻译： 可以提供一种在保持PUCCH的上行线路控制信道的高效率的情况下进行D-ACK和P-ACK资源分配的无线通信基站装置，无线通信终端装置和应答信号分配方法， 类似。 当在PDCCH发送时分配多个CCE时，分配与奇数CCE号相对应的PUCCH资源用于D-ACK，并且在可以使用的多个CCE号码中分配与偶数CCE号码相对应的PUCCH资源用于P-ACK。

公开(公告)号：US20130003684A1

公开(公告)日：2013-01-03

申请号：US13610665

申请日：2012-09-11

申请人： Yoshihiko Ogawa ,  Daichi Imamura ,  Sadaki Futagi ,  Tomofumi Takata

发明人： Yoshihiko Ogawa ,  Daichi Imamura ,  Sadaki Futagi ,  Tomofumi Takata

IPC分类号： H04W72/00 ,  H04W4/00

CPC分类号： H04J11/005 ,  H04B1/38 ,  H04J13/0062 ,  H04J13/22 ,  H04L5/0048 ,  H04L5/0073 ,  H04L27/2602 ,  H04L43/16 ,  H04W16/10 ,  H04W72/042

摘要： Provided is a sequence allocation method capable of reducing inter-cell interference of a reference signal when a ZC sequence is used as the reference signal in a mobile communication system. In the sequence allocation method divides R×M sequences specified by a ZC sequence number r(r=1 to R) and a cyclic shift sequence number m (m=1 to M) into a plurality of sequence groups X (X=1 to R) in accordance with the transmission band width of the reference signal, so that the ZC sequence is allocated to each cell in each sequence group unit. When it is assumed that R=9 and M=6, the number of sequence is 54. Each of the sequence groups is formed by two sequences. Accordingly, the number of sequence groups is 27. The 27 types of sequence groups are allocated to each cell.

摘要翻译： 提供了当在移动通信系统中使用ZC序列作为参考信号时，能够减少参考信号的小区间干扰的序列分配方法。 在序列分配方法中，将由ZC序列号r（r = 1〜R）和循环移位序列号m（m = 1〜M）指定的R×M序列划分为多个序列组X（X = 1〜 R），使得ZC序列被分配给每个序列组单元中的每个小区。 当假定R = 9且M = 6时，序列数为54.每个序列组由两个序列组成。 因此，序列组的数量为27.将27种类型的序列组分配给每个单元。