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1. 发明专利

JP2014116877A Wraparound canceller, and relay device 有权
标题翻译： WRAPAROUND CANCELLER和继电器
公开(公告)号：JP2014116877A
公开(公告)日：2014-06-26
申请号：JP2012271060
申请日：2012-12-12
申请人： Nippon Hoso Kyokai , 日本放送協会 , Nhk Engineering System Inc , 一般財団法人Nhkエンジニアリングシステム
发明人： TAKEUCHI TOMOAKI , SAITO MASANORI , SHIBUYA KAZUHIKO
IPC分类号： H04B7/015 , H04B7/005 , H04B7/208 , H04J11/00
摘要： PROBLEM TO BE SOLVED: To provide a wraparound canceller which eliminates wraparound caused by coupling between transmit and receive antennas and equalizes distortion caused by multipath when receiving a broadcast wave in which a plurality of unit transmission waves are combined, and a relay device for satisfactorily and stably relaying a host station wave while using the wraparound canceller.SOLUTION: A phase compensation portion 24 of a frequency characteristic calculation part 23 provided in a filter coefficient control section 20 of a wraparound canceller 1 compensates a phase by multiplying a carrier symbol of an equivalent baseband signal from an FFF 15 by a phase rotation correction amount obtained by inverting a code of a component of phase correction which has been applied for the unit of a segment on a transmission side. Namely, the phase of the carrier symbol is compensated by applying phase correction inverse to that on the transmission side. A channel estimation portion 25 estimates a channel response from the carrier symbol from the phase compensation portion 24. Thus, the channel response can be estimated while considering the component of phase correction which has been applied for the unit of a segment on the transmission side.
摘要翻译：要解决的问题：提供一种环绕消除器，其消除了由接收天线之间的耦合引起的环绕，并且当接收到多个单位传输波组合的广播波时，均衡由多路径引起的失真，以及用于令人满意地和在使用环绕消除器的同时稳定地中继主站波。解决方案：设置在环绕消除器1的滤波器系数控制部分20中的频率特性计算部分23的相位补偿部分24通过将等效的载波符号来自FFF15的基带信号通过相位旋转校正量反相，该相位旋转校正量通过反转已经针对发送侧的段的单位应用的相位校正的分量的代码而获得。即，通过将相位校正与发送侧的相位校正相反来补偿载波符号的相位。信道估计部分25从相位补偿部分24估计来自载波符号的信道响应。因此，可以在考虑已经针对发送侧的段的单位应用的相位校正的分量的情况下估计信道响应。

2. 发明专利

JP2013236227A Transmitter, receiver, transmission program, reception program 审中-公开
标题翻译：发射机，接收机，传输方案，接收方案
公开(公告)号：JP2013236227A
公开(公告)日：2013-11-21
申请号：JP2012106998
申请日：2012-05-08
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： SHITOMI TAKUYA , MURAYAMA KENICHI , TAGUCHI MAKOTO , ASAKURA SHINGO , SHIBUYA KAZUHIKO
IPC分类号： H04J11/00 , H04B7/04 , H04J99/00
摘要： PROBLEM TO BE SOLVED: To provide a transmitter which can transmit data subjected to block coding, without causing reduction in transmission capacity and degradation in estimation precision of transmission path response.SOLUTION: A transmitter 100 for transmitting data by OFDM signals consists of an OFDM modulation unit 150 including a block coding section 140 for generating a data block consisting of N (N is a positive integer of 2 or more) pieces of data, a pilot signal generating section generating a pilot signal for transmission path response estimation, and an OFDM symbol configuring section for configuring the OFDM symbol of an OFDM signal by the data block and pilot signal. The OFDM symbol configuring section arranges the pilot signals so that the data block is assigned to the adjacent data carrier symbol of the OFDM symbol.
摘要翻译：要解决的问题：提供一种可以发送经过块编码的数据的发射机，而不会导致传输容量的降低和传输路径响应的估计精度的劣化。解决方案：用于通过OFDM信号发送数据的发射机100包括OFDM调制单元150，包括块编码部分140，用于产生由N（N是2或更多的正整数）数据组成的数据块，产生用于传输路径响应估计的导频信号的导频信号产生部分和OFDM符号用于通过数据块和导频信号配置OFDM信号的OFDM符号的配置部分。 OFDM符号配置部分布置导频信号，使得数据块被分配给OFDM符号的相邻数据载波符号。

3. 发明专利

JP2013229759A Reception apparatus and program 有权
标题翻译：接收装置和方案
公开(公告)号：JP2013229759A
公开(公告)日：2013-11-07
申请号：JP2012100424
申请日：2012-04-25
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： ASAKURA SHINGO , MURAYAMA KENICHI , TAGUCHI MAKOTO , SHITOMI TAKUYA , SHIBUYA KAZUHIKO
IPC分类号： H04J11/00 , H04B7/04 , H04J99/00
摘要： PROBLEM TO BE SOLVED: To optimize the position of an interpolation filter in a short time and estimate a channel response with high accuracy.SOLUTION: A reception apparatus 1 includes: an input processing section 12 for generating a complex baseband signal; a channel response calculation section 13 for applying an interpolation filter to pilot signals to calculate a channel response of each carrier; an interpolation filter position decision section 16 for optimizing the position of the interpolation filter; a transmission signal estimation section 14 for generating an estimate of a transmission signal with the use of the channel response; a noise variance calculation section 17 for calculating a noise variance of OFDM symbols; a likelihood ratio calculation section 19 for calculating a likelihood ratio of each transmitted bit; and an error correcting decoding section 21 for decoding the estimate of the transmitted bit. The interpolation filter position decision section 16 decides the position of the interpolation filter which minimizes the noise variance calculated by the noise variance calculation section 17 as an optimum interpolation filter position, and the channel response calculation section 13 arranges the interpolation filter in the optimum interpolation filter position in calculating the channel response of each carrier.
摘要翻译：要解决的问题：为了在短时间内优化内插滤波器的位置，并且以高精度估计信道响应。解决方案：接收装置1包括：输入处理部分12，用于产生复基带信号; 用于对导频信号应用内插滤波器以计算每个载波的信道响应的信道响应计算部分13; 内插滤波器位置决定部分16，用于优化插值滤波器的位置; 发送信号估计部分14，用于使用信道响应来产生发送信号的估计; 用于计算OFDM符号的噪声方差的噪声方差计算部17; 用于计算每个发送比特的似然比的似然比计算部分19; 以及用于解码所发送的比特的估计的纠错解码部分21。内插滤波器位置判定部分16确定将由噪声方差计算部分17计算出的噪声方差最小化的内插滤波器的位置作为最佳内插滤波器位置，并且信道响应计算部分13将内插滤波器排列在最佳内插滤波器计算每个载波的信道响应的位置。

4. 发明专利

JP2013207754A Reception device and program 有权
标题翻译：接收设备和程序
公开(公告)号：JP2013207754A
公开(公告)日：2013-10-07
申请号：JP2012077808
申请日：2012-03-29
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： ASAKURA SHINGO , MURAYAMA KENICHI , TAGUCHI MAKOTO , SHITOMI TAKUYA , SHIBUYA KAZUHIKO
IPC分类号： H04J11/00 , H04B7/04 , H04J99/00
摘要： PROBLEM TO BE SOLVED: To improve a BER characteristic by accurately estimating noise of an OFDM signal received.SOLUTION: A reception device 1 includes: an input processing part 12 for generating a complex baseband signal by performing orthogonal demodulation processing and Fourier transformation processing on an OFDM signal received; a transmission path response calculation part 13 for calculating a transmission path response of each carrier using a known pilot signal extracted from the complex baseband signal; a MIMO detection part 14 for generating an estimation value of a transmission signal from the complex baseband signal using the transmission path response; a noise dispersion calculation part 16 for calculating OFDM noise dispersion using an estimation value of a null pilot signal; a likelihood ratio calculation part 18 for calculating a likelihood ratio of each bit transmitted using the noise dispersion and the estimation value of the transmission signal; and an error correction decryption part 20 for decrypting the estimation value of the bit transmitted using the likelihood ratio.
摘要翻译：要解决的问题：通过精确估计接收的OFDM信号的噪声来提高BER特性。解决方案：接收装置1包括：输入处理部分12，用于通过对一个基带信号进行正交解调处理和傅里叶变换处理来产生复基带信号接收OFDM信号; 传输路径响应计算部分13，用于使用从复基带信号提取的已知导频信号来计算每个载波的传输路径响应; MIMO检测部分14，用于使用传输路径响应从复基带信号生成传输信号的估计值; 噪声色散计算部分16，用于使用空导频信号的估计值来计算OFDM噪声色散; 用于计算使用噪声色散发送的每个比特的似然比和发送信号的估计值的似然比计算部分18; 以及纠错解密部分20，用于解密使用似然比传输的比特的估计值。

5. 发明专利

JP2013145969A Receiving-device and program 有权
标题翻译：接收设备和程序
公开(公告)号：JP2013145969A
公开(公告)日：2013-07-25
申请号：JP2012005552
申请日：2012-01-13
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： SHITOMI TAKUYA , MURAYAMA KENICHI , TAGUCHI MAKOTO , ASAKURA SHINGO , SHIBUYA KAZUHIKO
IPC分类号： H04J11/00
摘要： PROBLEM TO BE SOLVED: To suppress degradation in reception characteristics even when an OFDM signal which has passed a transmission path in which the reliability of a specific carrier is deteriorated is received.SOLUTION: A receiving-device 1 includes: a Fourier transformation part 11 which performs Fourier transformation on a received OFDM signal to generate a complex baseband signal; a transmission path response calculation part 12 which calculates a transmission path response of each carrier; an equalization part 13 which generates an estimation value of a transmission signal; a disappearance carrier determination part 14 which determines a carrier whose transmission path response of each carrier is equal to or lower than a threshold as a disappearance carrier; a band width noise variance calculation part 151 which calculates band width noise variance of the received OFDM signal; a carrier noise variance calculation part 152 which calculates carrier noise variance for each carrier so that the value of the disappearance carrier can be larger than that of the band width noise variance; a likelihood ratio calculation part 16 which calculates a likelihood ratio of each transmitted bit, using the estimation values of the transmission signal and carrier noise variance; and an error correction decoding part 17 which decodes the estimation value of the transmitted bit.
摘要翻译：要解决的问题：即使在已经通过特定载波的可靠性恶化的传输路径的OFDM信号被接收的情况下，也可以抑制接收特性的劣化。解决方案：接收装置1包括：傅立叶变换部11，对接收到的OFDM信号进行傅里叶变换，生成复基带信号; 计算每个载波的传输路径响应的传输路径响应计算部分12; 产生发送信号的估计值的均衡部13; 确定每个载波的传输路径响应等于或小于阈值的载波作为消失载波的载波载波确定部分14; 带宽噪声方差计算部151，计算接收的OFDM信号的带宽噪声方差; 计算每个载波的载波噪声方差，使得消失载波的值可以大于带宽噪声方差的载波噪声方差计算部分152; 使用发送信号的估计值和载波噪声方差来计算各发送比特的似然比的似然比计算部16; 以及对发送的比特的估计值进行解码的纠错解码部17。

6. 发明专利

JP2013062565A Transmitting device and receiving device 审中-公开
标题翻译：发送设备和接收设备
公开(公告)号：JP2013062565A
公开(公告)日：2013-04-04
申请号：JP2011197891
申请日：2011-09-12
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： SHITOMI TAKUYA , MURAYAMA KENICHI , TAGUCHI MAKOTO , ASAKURA SHINGO , SHIBUYA KAZUHIKO
IPC分类号： H04J99/00 , H04B7/04 , H04J11/00 , H04W16/28 , H04W72/04
CPC分类号： Y02D70/00 , Y02D70/444
摘要： PROBLEM TO BE SOLVED: To calculate a transmission path response at a high frequency and to reduce power consumption at transmission of a pilot signal.SOLUTION: A transmitting device 1 has: a pilot signal insertion unit 136 inserting pilot signals having different patterns into four kinds of transmission signals respectively to generate four kinds of OFDM symbols; and an OFDM signal generation unit 137 modulating respective carriers of the four kinds of OFDM symbols to generate four OFDM signals. The pilot signal insertion unit 136 inserts a significant pilot signal and a no-signal pilot signal into the first and second transmission signals, inserts the significant pilot signal, a code-inverted pilot signal and the no-signal pilot signal into the third and fourth transmission signals, inserts the no-signal pilot signal into the first and third transmission signals at the same predetermined position, and inserts the no-signal pilot signal into the second and fourth transmission signals at a position different from the same predetermined position.
摘要翻译：要解决的问题：为了计算高频率的传输路径响应并且减少在传送导频信号时的功耗。解决方案：发送设备1具有：导频信号插入单元136，分别将具有不同模式的导频信号插入到四种传输信号中，以生成四种OFDM符号; OFDM信号生成部137对四种OFDM符号的各载波进行调制，生成4个OFDM信号。导频信号插入单元136将有效导频信号和无信号导频信号插入到第一和第二传输信号中，将有效导频信号，编码反相导频信号和无信号导频信号插入第三和第四传输信号将无信号导频信号插入同一预定位置的第一和第三传输信号，并将无信号导频信号插入与同一预定位置不同的位置的第二和第四传输信号。版权所有（C）2013，JPO＆INPIT

7. 发明专利

JP2013055375A Data transmitter and data receiver 有权
标题翻译：数据发送器和数据接收器
公开(公告)号：JP2013055375A
公开(公告)日：2013-03-21
申请号：JP2011190068
申请日：2011-08-31
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： ASAKURA SHINGO , MURAYAMA KENICHI , TAGUCHI MAKOTO , SHITOMI TAKUYA , SHIBUYA KAZUHIKO
IPC分类号： H04B7/02 , H04B7/04 , H04J11/00 , H04J99/00 , H04W16/28
摘要： PROBLEM TO BE SOLVED: To provide a data transmitter capable of achieving expansion of transmission capacity and enhancement of reception tolerance simultaneously in the same transmission signal.SOLUTION: A data transmitter 100 transmitting data from N (N is an integer of more than 1) transmission antennas 101, 102 comprises: an STC encoding unit 103 generating N STC signals by principally performing space-time encoding of a transmission signal for mobile reception; N multiplexers 104, 105 principally compounding N SDM signals for fixed reception subjected to space division multiplexing and N STC signals from the STC encoding unit 103; and N OFDM modulation units 106, 107 that modulate the composite signals from the N multiplexers 104, 105 to OFDM signals, respectively. The data consisting of the OFDM signals modulated, respectively, by the N OFDM modulation units 106, 107 is transmitted from the N transmission antennas 101, 102.
摘要翻译：要解决的问题：提供能够在相同的传输信号中同时实现传输容量的扩展和增强接收容限的数据发射机。解决方案：从N（N是大于1的整数）发送天线101,102的数据发送器100包括：STC编码单元103，通过主要执行发送信号的空时编码来生成N个STC信号用于移动接收; N个多路复用器104,105，主要是对来自STC编码单元103的经空间分复用的固定接收的N个SDM信号和N个STC信号进行复合; 和N个OFDM调制单元106,107，其分别将来自N个多路复用器104,105的复合信号调制为OFDM信号。由N个OFDM调制单元106,107分别调制的OFDM信号构成的数据从N个发送天线101,102发送。（C）2013，JPO＆INPIT

8. 发明专利

JP2012175283A Ofdm signal receiving apparatus and relay apparatus 有权
标题翻译： OFDM信号接收装置和继电器装置
公开(公告)号：JP2012175283A
公开(公告)日：2012-09-10
申请号：JP2011033816
申请日：2011-02-18
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： TAKEUCHI TOMOAKI , HAMAZUMI HIROYUKI , SHIBUYA KAZUHIKO
IPC分类号： H04J11/00 , H04B7/005 , H04B7/15
摘要： PROBLEM TO BE SOLVED: To equalize a delay wave which considerably deteriorates a receiving property, without depending on a delay time of the delay wave being present on a propagation path.SOLUTION: A leak processing unit 55 of an OFDM signal receiving apparatus 1 cancels a multi-path component which appears on a delay profile as an estimation result of a propagation path but is not present on the propagation path, in particular, an unwanted multi-path component which appears in symbol determination error, discontinuity between symbols, and a delay time corresponding to a transition zone of a carrier filter, generated with interpolation processing in a carrier direction in a channel estimation unit 23. A code determination unit 71 determines a code of the delay profile, a window function multiplier 72 multiplies the code by a window function, and a subtractor 73 subtracts a multiplication result of the window function multiplier 72 from the delay profile. The window function uses a value which is large in the transition zone of the carrier filter but is small in other areas. Thus, the deterioration of a receiving property can be improved.
摘要翻译：要解决的问题：为了使延迟波在传播路径上存在的延迟时间不依赖于使接收特性显着劣化的延迟波均衡。解决方案：OFDM信号接收装置1的泄漏处理单元55抵消在延迟分布上出现的多径分量作为传播路径的估计结果，但不存在于传播路径上，特别地，出现在符号确定误差，符号之间的不连续性以及对应于载波滤波器的过渡区域的延迟时间的不想要的多径分量，其在信道估计单元23中的载波方向上的内插处理产生。代码确定单元71 确定延迟分布的代码，窗口函数乘法器72将代码乘以窗口函数，并且减法器73从延迟分布中减去窗函数乘法器72的相乘结果。窗口函数使用在载波滤波器的过渡区域中较大的值，但在其他区域中较小。因此，可以提高接收特性的劣化。版权所有（C）2012，JPO＆INPIT

9. 发明专利

JP2012015921A Transmission antenna apparatus, transmission apparatus, and polarization mimo transmission system 有权
标题翻译：传输天线装置，传输装置和极化MIMO传输系统
公开(公告)号：JP2012015921A
公开(公告)日：2012-01-19
申请号：JP2010152496
申请日：2010-07-02
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： MURAYAMA KENICHI , TAGUCHI MAKOTO , SHITOMI TAKUYA , HAMAZUMI HIROYUKI , SHIBUYA KAZUHIKO
IPC分类号： H01Q21/28 , H04J99/00
摘要： PROBLEM TO BE SOLVED: To provide a transmission antenna apparatus in a polarization MIMO (Multiple Input/Multiple Output) transmission system using polarization MIMO composed of a transmission apparatus having plural transmission antennas and a reception apparatus having plural reception antennas, and a transmission apparatus having the transmission antenna apparatus, and the polarization MIMO transmission system.SOLUTION: A transmission antenna apparatus of the present invention includes one antenna supporting column (102), a transmission antenna (101a) for horizontal polarization provided on the antenna supporting column (102), and a transmission antenna (101b) for vertical polarization provided above or below the transmission antenna (101a) for horizontal polarization on the antenna supporting column (102).
摘要翻译：解决的问题：提供一种利用由具有多个发送天线的发送装置构成的偏振MIMO和具有多个接收天线的接收装置的偏振MIMO（多输入多输出）发送系统的发送天线装置，具有发送天线装置的发送装置和偏振MIMO发送系统。解决方案：本发明的发送天线装置包括一个天线支撑列（102），设置在天线支撑列（102）上的用于水平极化的发送天线（101a）和用于垂直方向的发送天线（101b）设置在天线支撑柱（102）上用于水平极化的发送天线（101a）的上方或下方的极化。版权所有（C）2012，JPO＆INPIT

10. 发明专利

JP2012015920A Transmitting device and receiving device in polarization mimo transmission system 有权
标题翻译：发射设备和接收设备在偏振MIMO传输系统中的应用
公开(公告)号：JP2012015920A
公开(公告)日：2012-01-19
申请号：JP2010152492
申请日：2010-07-02
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： MURAYAMA KENICHI , TAGUCHI MAKOTO , SHITOMI TAKUYA , HAMAZUMI HIROYUKI , SHIBUYA KAZUHIKO
IPC分类号： H04J99/00 , H04B7/04 , H04J11/00 , H04W16/28 , H04W72/04
摘要： PROBLEM TO BE SOLVED: To provide a transmitting device and a receiving device in a polarization MIMO (Multiple Input/Multiple Output) system capable of performing highly accurate signal separation.SOLUTION: A transmitting device 1 of the present invention transmits cross polarization characteristic information of a transmission antenna which is measured in advance for each transmission system using a data carrier with fewer predetermined required C/N. A receiving device 2 of the present invention holds in advance cross polarization characteristic information of a reception antenna for each polarization and extracts the cross polarization characteristic information of the transmission antenna for each polarization transmitted from the transmitting device 1 from the predetermined data carrier with fewer required C/N. The receiving device 2 constructs a propagation path characteristic model using the cross polarization characteristic information of the reception antenna and the cross polarization characteristic information of the transmission antenna for each polarization, estimates a propagation path characteristic between multiple transmission antennas and multiple reception antennas using a pilot signal transmitted from the transmitting device according to the propagation path characteristic model, and separates a data signal for each transmission system based on the estimated propagation path characteristic.
摘要翻译：要解决的问题：提供能够执行高精度信号分离的偏振MIMO（多输入/多输出）系统中的发送装置和接收装置。解决方案：本发明的发送装置1发送使用具有较少预定所需C / N的数据载体的每个传输系统预先测量的发射天线的交叉极化特性信息。本发明的接收装置2预先提供用于每个极化的接收天线的交叉极化特性信息，并且从预定的数据载体提取从发送装置1发送的每个极化的发射天线的交叉极化特性信息，所需的数量少 C / N。接收装置2使用接收天线的交叉极化特性信息和各极化的发送天线的交叉极化特性信息来构造传播路径特性模型，使用导频来估计多个发送天线与多个接收天线之间的传播路径特性信号根据传播路径特性模型从发送装置发送，并且基于估计的传播路径特性分离每个传输系统的数据信号。版权所有（C）2012，JPO＆INPIT

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