公开(公告)号：US20100260251A1

公开(公告)日：2010-10-14

申请号：US12809553

申请日：2008-12-17

申请人： Kazunari Yokomakura ,  Yasuhiro Hamaguchi ,  Hideo Namba ,  Shimpei To

发明人： Kazunari Yokomakura ,  Yasuhiro Hamaguchi ,  Hideo Namba ,  Shimpei To

IPC分类号： H04L27/01

CPC分类号： H04L27/0008 ,  H04B17/336 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/20 ,  H04L25/022 ,  H04L25/03159 ,  H04L2025/03414 ,  H04L2025/03605

摘要： A reception device which receives a signal transmitted by a transmission device that changes at least one of a modulation scheme and a coding rate based on information reported from the reception device, the reception device includes an equalization unit which equalizes a received signal in a frequency domain, a signal-noise ratio measuring unit which measures a signal-noise ratio from the received signal after equalization, and a notification signal generation unit which sets at least one of a modulation scheme and a coding rate from the quality of reception and generates a signal to be reported to the transmission device.

摘要翻译： 一种接收装置，其接收由发送装置发送的信号，所述信号基于从所述接收装置报告的信息，改变调制方式和编码率中的至少一个，所述接收装置包括均衡部，其对频域中的接收信号进行均衡 信号噪声比测量单元，其从均衡后的接收信号中测量信噪比;以及通知信号生成单元，其根据接收质量设置调制方式和编码率中的至少一种，并产生信号 报告给传输设备。

公开(公告)号：US20090116592A1

公开(公告)日：2009-05-07

申请号：US12302249

申请日：2007-05-25

申请人： Hideo Namba ,  Yasuhiro Hamaguchi ,  Shimpei To

发明人： Hideo Namba ,  Yasuhiro Hamaguchi ,  Shimpei To

IPC分类号： H04L27/06

CPC分类号： H04L25/0232 ,  H04B17/309 ,  H04B17/391 ,  H04L25/0212 ,  H04L25/022

摘要： An extrapolation method to suppress degradation of characteristics of channel estimation is provided.A receiver 100 includes: a fast Fourier transform section (FFT unit) 101 for subjecting a multicarrier symbol modulated by a known code to fast Fourier transform so as to calculate first frequency information on each subcarrier; a division section for complex dividing the first frequency information with the known code so as to calculate second frequency information on each subcarrier; a subcarrier interpolation section 103, based on the second frequency information, for generating interpolation frequency information by calculating (1) an amplitude value at which the amplitude values of a plurality of pieces of information to be interpolated are identical and (2) one of the phase differences equal to a phase difference of signal points between two subcarriers as a phase difference of a plurality of pieces of information to be interpolated or a combination them, and interpolating the generated interpolation frequency information to second frequency information so as to calculate third frequency information; and an inverse fast Fourier transform section (IFFT unit) 104 for subjecting the third frequency information to inverse fast Fourier transform.

摘要翻译： 提供了一种抑制信道估计特性劣化的外推法。 接收机100包括：快速傅里叶变换部（FFT部）101，用于对由已知码进行调制的多载波符号进行快速傅里叶变换，以计算每个副载波的第一频率信息; 分割部分，用于利用所述已知码对所述第一频率信息进行复分频，以计算每个子载波的第二频率信息; 子载波插值部103，基于第二频率信息，通过计算（1）要插补的多条信息的振幅值相同的振幅值，生成插值频率信息，以及（2） 相位差等于两个子载波之间的信号点的相位差，作为要被内插的多条信息的相位差或将它们组合，并将生成的插值频率信息内插到第二频率信息，以便计算第三频率信息 ; 以及用于对第三频率信息进行快速傅里叶逆变换的逆快速傅立叶变换部（IFFT单元）104。

公开(公告)号：US20080080628A1

公开(公告)日：2008-04-03

申请号：US11795309

申请日：2006-01-16

申请人： Shimpei To ,  Yasuhiro Hamaguchi ,  Hideo Nanba ,  Seiichi Sampei ,  Hiroshi Harada ,  Masafumi Moriyama

发明人： Shimpei To ,  Yasuhiro Hamaguchi ,  Hideo Nanba ,  Seiichi Sampei ,  Hiroshi Harada ,  Masafumi Moriyama

IPC分类号： H04L27/28

CPC分类号： H04L27/2602 ,  H04B7/061 ,  H04B7/084 ,  H04J13/18 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/0094 ,  H04L25/0204 ,  H04L25/0224 ,  H04L27/261 ,  H04L27/2647

摘要： Improving the accuracy of estimation of channel responses in receiving signals from a plurality of antennas is disclosed. A transmitting device of a base station includes a preamble A generating unit 010, a preamble B generating unit 011, phase rotating units 012 and 013, multiplexing units 014 and 015, an forward error correction coding unit 016, an S/P converting unit 017, a mapping unit 018, a changeover switch 019, IDFT (or IFFT) units 020 and 026, P/S converting units 021 and 027, GI (Guard Interval) inserting units 022 and 028, D/A converting units 023 and 029, radio transmitting units 024 and 030 and antenna units 025 and 031. In the preamble A generating unit 010 and the preamble B generating unit 011, a preamble A and a preamble B (see the packet format in FIG. 1) are generated, respectively. The preamble A is outputted to the multiplexing units 014 and 015, while the preamble B is outputted to the phase rotating units 012 and 013. The phase rotating units 012 and 013 to which the preamble B has been inputted give continuous phase rotation to subcarriers of the preamble B. In the transmitting device of the base station according to this embodiment, the phase rotating unit 012 does not give phase rotation, but only the phase rotating unit 013 gives phase rotation to the preamble B.

摘要翻译： 公开了在从多个天线接收信号时提高信道响应的估计精度。 基站的发送装置包括前导码A生成部010，前导码B生成部011，相位旋转部012,003，复用部014,015，前向纠错编码部016，S / P转换部017 ，映射单元018，转换开关019，IDFT（或IFFT）单元020和026，P / S转换单元021和027，GI（保护间隔）插入单元022和028，D / A转换单元023和029， 无线发射单元024和030以及天线单元025和031。 在前导码A生成单元010和前导码B生成单元011中，分别生成前导码A和前导码B（参照图1中的分组格式）。 前导码A被输出到多路复用单元014和015，而前同步码B被输出到相位旋转单元012和013。 已经输入前同步码B的相位旋转单元012和013对前同步码B的副载波进行连续相位旋转。在根据本实施例的基站的发送装置中，相位旋转单元012不给予相位旋转， 但只有相位旋转单元013给予前导码B相位旋转。

公开(公告)号：US20070291702A1

公开(公告)日：2007-12-20

申请号：US11665569

申请日：2005-10-19

申请人： Hideo Nanba ,  Yasuhiro Hamaguchi ,  Shimpei To

发明人： Hideo Nanba ,  Yasuhiro Hamaguchi ,  Shimpei To

IPC分类号： H04J3/00

CPC分类号： H04W72/085 ,  H04J3/00 ,  H04L5/023 ,  H04L27/2608 ,  H04W52/243 ,  H04W52/346 ,  H04W72/0473

摘要： Allocation of transmission power is carried out adaptively without affecting adjacent cells. There are comprised a reception part (132) that receives information from a mobile station apparatus, a transmission power determination part (125) that determines transmission power when transmitting a wireless signal to a mobile station apparatus based on the received information, an acquisition part (120) that acquires information about communication environment in each time channel or each frequency channel from the received information, a scheduling part (120) that identifies a time channel or frequency channel the relationship of which between transmission power and communication environment satisfies the condition for allocation and allocates transmission data and transmission power for transmission to a mobile station apparatus to a communication slot in the time channel or frequency channel, and a transmission part (130, 131) that transmits a wireless signal using the communication slot to which the transmission data and the determined transmission power have been allocated.

摘要翻译： 传输功率的分配是自适应进行的，而不影响相邻小区。 包括从移动站装置接收信息的接收部分（132），基于接收到的信息确定向移动台装置发送无线信号时的发送功率的发送功率决定部（125） 120），从接收到的信息中获取关于每个时间信道或每个频率信道的通信环境的信息，标识发送功率和通信环境之间的关系满足分配条件的时间信道或频率信道的调度部分（120） 并且将用于向移动站装置发送的发送数据和发送功率分配给时间信道或频率信道中的通信时隙，以及发送部（130,131），使用发送数据的通信时隙发送无线信号， 确定的传输功率已经为a1 位于。