专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2014225789A ＭＩＭＯ−ＯＦＤＭ受信装置及び測定装置有权
标题翻译： MIMO-OFDM接收设备和测量设备
公开(公告)号：JP2014225789A
公开(公告)日：2014-12-04
申请号：JP2013104258
申请日：2013-05-16
申请人：日本放送協会 , Nippon Hoso Kyokai
发明人： ASAKURA SHINGO , MURAYAMA KENICHI , SHITOMI TAKUYA , SHIBUYA KAZUHIKO
IPC分类号： H04J11/00 , H04J99/00
摘要：【課題】STC−SFNを構成するMIMO通信システムにおいて、一定周期で繰り返されるパイロットパターンの先頭を早期に検出する。【解決手段】SP抽出部4のH信号SPパターン検出手段40は、H信号とSPパターンA−Hとの間の相関をとることで、H信号におけるSPパターンの先頭シンボルを検出する。送信局判定手段41は、H信号SPパターン検出手段40により検出されたH信号におけるSPパターンの先頭シンボルを基準にして、SPパターンA−Hの周期性を利用することで、送信局がA局11またはB局12のみであるか、またはAB局であるかを判定する。SPパターン検出手段42は、送信局判定手段41により判定された送信局に対応したSPパターンA−VまたはSPパターンA−V,B−Vの周期性を利用することで、V信号に基づいてSPパターンの先頭シンボルを検出する。【選択図】図3
摘要翻译：要解决的问题：在配置STC-SFN的MIMO通信系统中，以规则的周期快速检测出导频模式的开始。解码：SP提取单元4的H信号SP模式检测装置40检测到通过获得H信号和SP图案AH之间的相关性的H信号中的SP图案。发送站确定装置41基于SP的头部符号来确定发送站是仅仅是A站11或B站12，或者A和B站利用SP模式AH的周期性由H信号SP图案检测装置40检测到的H信号中的图案.SP图案检测装置42通过使用SP图案AV或SP图案AV，BV的周期性，基于V信号检测SP图案的头部符号对应于由发送站确定装置41确定的发送站。

2. 发明专利

JP2014090245A Receiving unit and program 有权
标题翻译：接收单位和计划
公开(公告)号：JP2014090245A
公开(公告)日：2014-05-15
申请号：JP2012237873
申请日：2012-10-29
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 , H03M13/45 , H04B7/04 , H04J99/00
摘要： PROBLEM TO BE SOLVED: To minimize reduction of the decoding accuracy of an error correction code due to co-channel interference.SOLUTION: A receiver unit 2 includes an input processing unit 22 for generating a complex baseband signal from an OFDM signal received, a transmission path response calculation unit 23 for calculating the transmission path response of each carrier, a MIMO detection unit 24 for generating an estimate of a transmission signal from the complex baseband signal by using the transmission path response, a noise variance calculation unit 26 for calculating the average value of noise variance in the time direction, as a carrier noise variance, for each carrier of the OFDM signal, a likelihood calculation unit 28 for calculating the likelihood ratio of each bit transmitted by using the carrier noise variance and the estimate, and an error correction code decoding unit 31 for decoding the estimate of a bit transmitted by using the likelihood ratio.
摘要翻译：要解决的问题：为了最小化由于同信道干扰导致的纠错码的解码精度的降低。解决方案：接收机单元2包括：输入处理单元22，用于从接收的OFDM信号中生成复基带信号;传输用于计算每个载波的传输路径响应的路径响应计算单元23，用于通过使用传输路径响应从复基带信号生成传输信号的估计的MIMO检测单元24，用于计算平均值的噪声方差计算单元26 对于OFDM信号的每个载波，在时间方向上的噪声方差的值作为载波噪声方差，用于计算通过使用载波噪声方差和估计发送的每个比特的似然比的似然率计算单元28和误差校正码解码单元31，用于对通过使用似然比传输的比特的估计进行解码。

3. 发明专利

JP2014022983A Receiver and program 有权
标题翻译：接收者和计划
公开(公告)号：JP2014022983A
公开(公告)日：2014-02-03
申请号：JP2012160643
申请日：2012-07-19
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 prevent frequency selective fading due to SFN interference.SOLUTION: A receiver 2 includes: a Fourier-transform unit 203 for Fourier-transforming an OFDM signal received to generate a complex baseband signal; a pilot signal generation unit 204 for generating a pilot signal; a pilot signal extraction unit 205 for extracting the pilot signal from the complex baseband signal; a transmission path response estimation unit 206 for calculating a transmission path response; a space-time code decoding unit 21 for generating a carrier modulation signal using the transmission path response from the complex baseband signal; a carrier demodulation unit 22 for demodulating the carrier modulation signal for a subcarrier to generate carrier demodulation data; and an error correction code decoding unit 23 for performing an error correction processing for the carrier demodulation data to generate a decoding signal. The pilot signal generation unit 204 generates the pilot signal corresponding to a transmission station estimated from reception quality information obtained by analyzing the carrier modulation signal.
摘要翻译：要解决的问题：为了防止由于SFN干扰引起的频率选择性衰落。解决方案：接收机2包括：付里叶变换单元203，用于对接收到的OFDM信号进行傅立叶变换以产生复基带信号; 用于产生导频信号的导频信号生成单元204; 导频信号提取单元205，用于从复基带信号中提取导频信号; 用于计算传输路径响应的传输路径响应估计单元206; 空时码解码单元21，用于使用来自复基带信号的传输路径响应来产生载波调制信号; 用于解调副载波的载波调制信号以产生载波解调数据的载波解调单元22; 以及纠错码解码部23，对载波解调数据进行纠错处理，生成解码信号。导频信号生成单元204生成与通过分析载波调制信号而获得的接收质量信息估计出的发送站对应的导频信号。

4. 发明专利

JP2014112832A Transmission device, reception device, transmission system, and transfer system 有权
标题翻译：传输设备，接收设备，传输系统和传送系统
公开(公告)号：JP2014112832A
公开(公告)日：2014-06-19
申请号：JP2013232244
申请日：2013-11-08
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： SHITOMI TAKUYA , MURAYAMA KENICHI , ASAKURA SHINGO , SHIBUYA KAZUHIKO
IPC分类号： H04J99/00 , H04B7/02 , H04B7/04 , H04B7/10 , H04J11/00
CPC分类号： H04L1/0643 , H04B7/0669 , H04B7/0671 , H04B7/10
摘要： PROBLEM TO BE SOLVED: To reduce deterioration in transfer characteristics even when reception characteristics of electric waves coming from one of two stations deteriorate in an environment where electric waves are received from the two stations.SOLUTION: There is provided transmission devices 10 placed in different positions, configured to transmit different transmission signals obtained by coding the same data in different conversions, and used in a transmission system 4. Each of the transmission devices comprises: at least one first transmission antenna 181 via which a transmission signal is wirelessly transmitted by a first polarized wave; at least one second transmission antenna 182 via which a transmission signal is wirelessly transmitted by a second polarized wave different from the first polarized wave; a coding part 11 configured to code parallel sequence data in a conversion different from that of another transmission device; inverse Fourier transform parts 161, 162 configured to perform inverse Fourier transform on each symbol sequence coded by the coding part; and a transmission part configured to transmit one of the transmission signals after the inverse Fourier transform parts have performed the inverse Fourier transform from the first transmission antenna, and transmit the other transmission signal from the second transmission antenna.
摘要翻译：要解决的问题：即使在从两个站中接收到电波的环境中来自两个站中的一个的电波的接收特性恶化的情况下，也可减少传输特性的劣化。解决方案：设置放置在不同位置的传输设备10 被配置为发送通过以不同转换对相同数据进行编码而获得的不同传输信号，并在传输系统4中使用。每个传输设备包括：至少一个第一传输天线181，通过第一传输天线181通过第一传输信号无线地传输传输信号极化波; 至少一个第二传输天线182，通过不同于第一偏振波的第二偏振波无线传输发射信号; 编码部分11，被配置为以与另一传输装置的转换不同的转换来编码并行序列数据; 被配置为对由编码部分编码的每个符号序列执行逆傅立叶变换的逆傅里叶变换部分161,162; 以及发送部，被配置为在所述逆傅里叶变换部从所述第一发送天线执行所述逆傅里叶变换之后发送所述发送信号之一，并且从所述第二发送天线发送所述另一发送信号。

5. 发明专利

JP2013236229A Transmitter, receiver, transmission program, reception program 有权
标题翻译：发射机，接收机，传输方案，接收方案
公开(公告)号：JP2013236229A
公开(公告)日：2013-11-21
申请号：JP2012107020
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
摘要： PROBLEM TO BE SOLVED: To provide a transmitter which can transmit data and parameter data subjected to block coding without causing reduction in transmission capacity and degradation in estimation precision of transmission path response, while simplifying the configuration.SOLUTION: The transmitter includes a block coding section 140 for generating a data block consisting of N data, a pilot signal generating section 151 generating a pilot signal for transmission path estimation, a parameter data generating section 152 for generating the parameter data of an OFDM signal, and an OFDM symbol configuring section 153 for configuring the OFDM symbol of an OFDM signal on the basis of the data block, the pilot signal and the parameter data. The OFDM symbol configuring section 153 arranges the pilot signal at a predetermined symbol of the OFDM symbol, arranges the data block at the adjacent data carrier symbol of the OFDM symbol, and arranges the parameter data at the residual data carrier symbol.
摘要翻译：要解决的问题：提供一种可以发送数据的发送器，并且在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的情况下传输数据和参数数据，同时简化了配置。解决方案：发送器包括块编码部分 140，用于产生由N个数据组成的数据块，产生用于传输路径估计的导频信号的导频信号产生部分151，用于产生OFDM信号的参数数据的参数数据产生部分152，以及用于基于数据块，导频信号和参数数据配置OFDM信号的OFDM符号。 OFDM符号构成部153将导频信号配置在OFDM符号的预定符号处，将数据块配置在OFDM符号的相邻数据载波符号，并将该参数数据配置在残差数据载波符号。

6. 发明专利

JP2013207750A Reception device and program 有权
标题翻译：接收设备和程序
公开(公告)号：JP2013207750A
公开(公告)日：2013-10-07
申请号：JP2012077719
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 calculating noise dispersion having an optimum value in accordance with a reception state.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 by extracting a known pilot signal contained in 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 symbol section determination part 16 for determining a symbol section of an OFDM symbol used in calculation of noise dispersion from the transmission path response; a noise dispersion calculation part 17 for calculating the noise dispersion of the OFDM symbol using the estimation value of the transmission signal in the symbol section; a likelihood ratio calculation part 19 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 21 for decrypting the estimation value of the bit transmitted using the likelihood ratio.
摘要翻译：要解决的问题：通过根据接收状态计算具有最佳值的噪声色散来提高BER特性。解决方案：接收装置1包括：输入处理部分12，用于通过执行正交解调处理产生复基带信号;以及对所接收的OFDM信号进行傅里叶变换处理; 传输路径响应计算部分13，用于通过提取复数基带信号中包含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; 符号部分确定部分16，用于从传输路径响应确定用于计算噪声色散的OFDM符号的符号部分; 噪声色散计算部分17，用于使用符号部分中的发送信号的估计值来计算OFDM符号的噪声分散; 用于计算使用噪声色散传输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19; 以及纠错解密部21，用于对使用似然比发送的比特的估计值进行解密。

7. 发明专利

JP2013162312A Receiving apparatus and program 有权
标题翻译：接收设备和程序
公开(公告)号：JP2013162312A
公开(公告)日：2013-08-19
申请号：JP2012022292
申请日：2012-02-03
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 enhance error correction capability in a receiving apparatus for receiving an OFDM signal.SOLUTION: A receiving apparatus 1 includes an input processing unit 12 for generating a complex baseband signal from an OFDM signal, a transmission path response calculation unit 13 for calculating the transmission path response of each carrier, an equalization unit 14 for generating an estimate of a transmission signal, a noise variance calculation unit 16 for calculating the noise variance of each carrier by multiplying the band noise variance of an OFDM signal by a weighting factor for each carrier, a likelihood ratio calculation unit 18 for calculating the likelihood ratio of each bit transmitted using the carrier noise variance and the estimate of a transmission signal, a reception signal bit rearrangement unit 19 for changing the bit arrangement so that the estimate of a transmission signal corresponds with the modulation system of a transmission signal, a bit noise variance generation unit 20 for outputting the carrier noise variance as a noise variance in unit of bit, and an error correction unit 21 for decoding the estimate of a bit transmitted using the likelihood ratio, the estimate of a transmission signal after bit rearrangement, and the noise variance in unit of bit.
摘要翻译：要解决的问题：增强用于接收OFDM信号的接收装置中的纠错能力。解决方案：接收装置1包括用于从OFDM信号产生复基带信号的输入处理单元12，传输路径响应计算单元13 用于计算每个载波的传输路径响应，用于产生传输信号的估计的均衡单元14，噪声方差计算单元16，用于通过将OFDM信号的频带噪声方差乘以加权来计算每个载波的噪声方差每个载波的因子，用于计算使用载波噪声方差和传输信号的估计发送的每个比特的似然比的似然比计算单元18，用于改变比特排列的接收信号比特重排单元19，传输信号对应于传输信号的调制系统，即位噪声用于输出载波噪声方差作为以位为单位的噪声方差的方差生成单元20，以及用于解码使用似然比发送的比特的估计的误差校正单元21，比特重排后的发送信号的估计，以及噪声方差为单位。

8. 发明专利

JP2013055621A Frequency error detector and program 有权
标题翻译：频率错误检测器和程序
公开(公告)号：JP2013055621A
公开(公告)日：2013-03-21
申请号：JP2011194352
申请日：2011-09-06
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： TAGUCHI MAKOTO , SHIBUYA KAZUHIKO , MURAYAMA KENICHI , SHITOMI TAKUYA , ASAKURA SHINGO
IPC分类号： H04J11/00
摘要： PROBLEM TO BE SOLVED: To detect a frequency error correctly even of an OFDM signal mixed with a pilot signal having a different boost ratio.SOLUTION: A correlation operation section 16 of a broadband AFC unit 15 determines all pilot weight information P(i,k) for equalizing the power value of a pilot signal by using AC, TMCC and CP arrangement information P'(k), SP arrangement information SP(i,k), an AC, TMCC and CP boost ratio rand an SP boost ratio r, sets the number of slide carriers α within a predetermined range, and calculates an integral power value S(i,α) by multiplying the power value of each sub-carrier and the all pilot weight information P(i,k). A maximum position detection section 153 determines the maximum value among the number of slide carriers α and the integral power value S(i,α) of each sequence number i of the SP, detects the number of slide carriers α in the maximum integral power value S(i,α), and outputs the number as the frequency error of broadband.
摘要翻译：要解决的问题：即使是与具有不同增益比的导频信号混合的OFDM信号也能正确地检测频率误差。解决方案：宽带AFC单元15的相关操作部分16确定用于使导频信号的功率值均衡的全部导频权重信息P （i，k）使用AC，TMCC和CP配置信息P'（k），SP配置信息SP（i，k），AC，TMCC和CP增强比r P 和SP提升比例r SP 将滑架载波α的数量设定在预定范围内，并通过将每个副载波的功率值相乘来计算积分功率值S（i，α）和全部导频权重信息P 全部（i，k）。最大位置检测部153确定滑动载体数α的最大值和SP的每个序列号i的积分功率值S（i，α），检测最大积分功率值中的滑动载波α的数量 S（i，α），并将该数作为宽带的频率误差输出。版权所有（C）2013，JPO＆INPIT

9. 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。

10. 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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式