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1. 发明授权

US07466645B2 OFDM signal receiving apparatus 有权
标题翻译： OFDM信号接收装置
公开(公告)号：US07466645B2
公开(公告)日：2008-12-16
申请号：US11302872
申请日：2005-12-14
申请人： Ryosuke Mori , Koji Setoh , Daisuke Hayashi , Tetsuya Yagi , Noritaka Iguchi , Akira Kisoda , Sadashi Kageyama
发明人： Ryosuke Mori , Koji Setoh , Daisuke Hayashi , Tetsuya Yagi , Noritaka Iguchi , Akira Kisoda , Sadashi Kageyama
IPC分类号： H04J11/00
CPC分类号： H04L27/265 , H04B7/0845 , H04L27/2633
摘要： Disclosed is an OFDM signal receiving apparatus for diversity reception, with a plurality of antennas, of an OFDM signal containing Y sub-carriers, where 2X−1 1. The OFDM signal receiving apparatus includes a plurality of receiving systems, and a diversity processing unit connected to the receiving systems and fed with sequences of data on sub-carriers demodulated by the respective receiving systems. At least one of the receiving systems includes an FFT circuit for Fast Fourier transforming, in parallel, only a sequence of data on 2Z sub-carriers contained in the OFDM signal received with a corresponding antenna, where X>Z. The diversity processing unit performs a diversity process on sequences of data on sub-carriers, out of all the Y sub-carries, redundantly demodulated.
摘要翻译：公开了一种OFDM信号接收装置，用于分集接收包含Y个子载波的OFDM信号的多个天线，其中2X-1 1。 OFDM信号接收装置包括多个接收系统，以及连接到接收系统的分集处理单元，并且馈送有由各个接收系统解调的子载波上的数据序列。接收系统中的至少一个包括用于快速傅里叶变换的FFT电路，其中并行地仅包含用相应天线接收的OFDM信号中包含的2Z子载波上的数据序列，其中X> Z。在所有Y子载波中，分集处理单元对子载波上的数据序列执行分集处理，被冗余地解调。

2. 发明申请

US20060146693A1 OFDM signal receiving apparatus 有权
标题翻译： OFDM信号接收装置
公开(公告)号：US20060146693A1
公开(公告)日：2006-07-06
申请号：US11302872
申请日：2005-12-14
申请人： Ryosuke Mori , Koji Setoh , Daisuke Hayashi , Tetsuya Yagi , Noritaka Iguchi , Akira Kisoda , Sadashi Kageyama
发明人： Ryosuke Mori , Koji Setoh , Daisuke Hayashi , Tetsuya Yagi , Noritaka Iguchi , Akira Kisoda , Sadashi Kageyama
IPC分类号： H04Q7/00 , H04Q7/24 , H04J11/00
CPC分类号： H04L27/265 , H04B7/0845 , H04L27/2633
摘要： Disclosed is an OFDM signal receiving apparatus for diversity reception, with a plurality of antennas, of an OFDM signal containing Y sub-carriers, where 2X−1 1. The OFDM signal receiving apparatus includes a plurality of receiving systems, and a diversity processing unit connected to the receiving systems and fed with sequences of data on sub-carriers demodulated by the respective receiving systems. At least one of the receiving systems includes an FFT circuit for Fast Fourier transforming, in parallel, only a sequence of data on 2Z sub-carriers contained in the OFDM signal received with a corresponding antenna, where X>Z. The diversity processing unit performs a diversity process on sequences of data on sub-carriers, out of all the Y sub-carries, redundantly demodulated.
摘要翻译：公开了一种OFDM信号接收装置，用于分集接收包含Y个子载波的OFDM信号的多个天线，其中，2个X-1 和X> 1。 OFDM信号接收装置包括多个接收系统，以及连接到接收系统的分集处理单元，并且馈送有由各个接收系统解调的子载波上的数据序列。至少一个接收系统包括用于快速傅里叶变换的FFT电路，其并行地仅包含在用相应的天线接收的OFDM信号中的2个子载波上的数据序列，其中X > Z。在所有Y子载波中，分集处理单元对子载波上的数据序列执行分集处理，被冗余地解调。

3. 发明申请

US20080304587A1 Ofdm Reception Device 失效
标题翻译： Ofdm接收设备
公开(公告)号：US20080304587A1
公开(公告)日：2008-12-11
申请号：US11793527
申请日：2005-12-21
申请人： Koji Setoh , Ippei Kanno , Akira Kisoda , Daisuke Hayashi , Ryosuke Mori , Tetsuya Yagi , Noritaka Iguchi
发明人： Koji Setoh , Ippei Kanno , Akira Kisoda , Daisuke Hayashi , Ryosuke Mori , Tetsuya Yagi , Noritaka Iguchi
IPC分类号： H04L27/28 , H04L27/06 , H04L25/08 , H03D1/06
CPC分类号： H04L27/2662 , H04L27/2678
摘要： An OFDM reception device detects a time at which impulse noise occurs in a received OFDM signal, and specifies a start position candidate period that does not have intersymbol interference and is estimated to have a guard interval signal in a symbol. When setting a FFT window of an effective symbol length in a symbol duration of each symbol, if the impulse noise occurrence time is included in the symbol, the OFDM reception device determines a start position of the FFT window within a range of the start position candidate period so as to exclude the impulse noise occurrence time as much as possible.
摘要翻译： OFDM接收装置检测接收的OFDM信号中出现脉冲噪声的时间，并指定不具有码间干扰的开始位置候补周期，并且估计出具有符号中的保护间隔信号。当在每个符号的符号持续时间中设置有效符号长度的FFT窗口时，如果脉冲噪声发生时间包括在符号中，则OFDM接收装置在开始位置候选的范围内确定FFT窗口的开始位置以便尽可能地排除脉冲噪声发生时间。

4. 发明授权

US07991058B2 OFDM reception device 失效
标题翻译： OFDM接收装置
公开(公告)号：US07991058B2
公开(公告)日：2011-08-02
申请号：US11793527
申请日：2005-12-21
申请人： Koji Setoh , Ippei Kanno , Akira Kisoda , Daisuke Hayashi , Ryosuke Mori , Tetsuya Yagi , Noritaka Iguchi
发明人： Koji Setoh , Ippei Kanno , Akira Kisoda , Daisuke Hayashi , Ryosuke Mori , Tetsuya Yagi , Noritaka Iguchi
IPC分类号： H04L27/28
CPC分类号： H04L27/2662 , H04L27/2678
摘要： An OFDM reception device detects a time at which impulse noise occurs in a received OFDM signal, and specifies a start position candidate period that does not have intersymbol interference and is estimated to have a guard interval signal in a symbol. When setting a FFT window of an effective symbol length in a symbol duration of each symbol, if the impulse noise occurrence time is included in the symbol, the OFDM reception device determines a start position of the FFT window within a range of the start position candidate period so as to exclude the impulse noise occurrence time as much as possible.
摘要翻译： OFDM接收装置检测接收的OFDM信号中出现脉冲噪声的时间，并指定不具有码间干扰的开始位置候补周期，并且估计出具有符号中的保护间隔信号。当在每个符号的符号持续时间中设置有效符号长度的FFT窗口时，如果脉冲噪声发生时间包括在符号中，则OFDM接收装置在开始位置候选的范围内确定FFT窗口的开始位置以便尽可能地排除脉冲噪声发生时间。

5. 发明授权

US07929627B2 OFDM receiver, integrated circuit and receiving method 有权
标题翻译： OFDM接收机，集成电路和接收方式
公开(公告)号：US07929627B2
公开(公告)日：2011-04-19
申请号：US11885042
申请日：2006-02-28
申请人： Akira Kisoda , Noritaka Iguchi , Koji Setoh
发明人： Akira Kisoda , Noritaka Iguchi , Koji Setoh
IPC分类号： H04L27/28
CPC分类号： H04L25/0232
摘要： A mobile receiver performs oblique interpolation in such a direction that a symbol number increases by one and a carrier number decreases by three with respect to a position of each Scattered Pilot Signal to interpolate a first signal whose channel characteristics have not been obtained. The mobile receiver then performs, in a frequency axis direction, frequency axis interpolation to interpolate channel characteristics of a second signal whose channel characteristics have not been obtained, using the estimated channel characteristics and the interpolated channel characteristics.
摘要翻译：移动接收机以符号数增加1的方向执行倾斜内插，并且相对于每个散射导频信号的位置减少三个载波数，以内插未获得其信道特性的第一信号。然后，移动接收机利用估计的信道特性和内插的信道特性，在频率轴方向上进行频率轴插值来内插未获得其信道特性的第二信号的信道特性。

6. 发明申请

US20080165871A1 Ofdm Receiver, Integrated Circuit And Receiving Method 有权
标题翻译： OFDM接收机，集成电路和接收方法
公开(公告)号：US20080165871A1
公开(公告)日：2008-07-10
申请号：US11885042
申请日：2006-02-28
申请人： Akira Kisoda , Noritaka Iguchi , Koji Setoh
发明人： Akira Kisoda , Noritaka Iguchi , Koji Setoh
IPC分类号： H04L27/26
CPC分类号： H04L25/0232
摘要： To improve the reception performance of a mobile receiver for a digital broadcasting by OFDM method, the present invention focuses on the arrangement of the SP signals. The present invention performs oblique interpolation in such a direction that a symbol number increases by one and a carrier number decreases by three with respect to a position of each Scattered Pilot Signal to interpolate a first signal whose channel characteristics have not been obtained, and then performs, in a frequency axis direction, frequency axis interpolation to interpolate channel characteristics of a second signal whose channel characteristics have not been obtained, using the estimated channel characteristics and the interpolated channel characteristics.
摘要翻译：为了通过OFDM方式提高数字广播的移动接收机的接收性能，本发明着重于SP信号的配置。本发明在符号数增加1的方向上执行斜插补，并且相对于每个分散导频信号的位置减少三个载波，以内插未获得其信道特性的第一信号，然后执行在频率轴方向上，使用估计的信道特性和内插的信道特性，对频道特性未获得的第二信号的信道特性进行频率插值。

7. 发明申请

US20070064588A1 Ofdm signal transmission method, transmission apparatus, and reception apparatus 有权
标题翻译： Ofdm信号发送方法，发送装置和接收装置
公开(公告)号：US20070064588A1
公开(公告)日：2007-03-22
申请号：US10548377
申请日：2004-03-08
申请人： Akira Kisoda , Sadashi Kageyama , Tomohiro Kimura , Hiroki Furukawa , Kenichiro Hayashi , Yuji Nakai
发明人： Akira Kisoda , Sadashi Kageyama , Tomohiro Kimura , Hiroki Furukawa , Kenichiro Hayashi , Yuji Nakai
IPC分类号： H04J11/00 , H04L12/43
CPC分类号： H04W72/0446 , H04B7/2643 , H04L1/0041 , H04L1/0065 , H04L1/0071 , H04L5/0044 , H04L5/0048 , H04L27/2602 , H04L27/2647 , H04L27/2657 , H04L27/2662 , H04L2025/03414 , H04N5/4401 , H04N5/455 , H04N21/2383 , H04N21/41407 , H04N21/4382 , H04N21/6112
摘要： A transmission method of a digital broadcast which is compatible with the DVB-T terrestrial digital broadcast system in Europe and saves a battery in a mobile terminal is provided. Superframes in DVB-T are divided into units each including plural symbols so that an integer number of TS packets can be carried in each slot. At least one slot is used to transmit one service. Energy dispersion, Reed-Solomon coding, byte interleaving, convolutional coding, and time interleaving are applied to each service. When services for mobile terminal reception and services for fixed terminals are transmitted as the provided services, null packets may be transmitted before and after the slot carrying the mobile receiver service so that the fixed reception service and the mobile reception services are not mixed. If the fixed terminal handles TS packets of the mobile reception service as error packets, it could have no problem in reception.
摘要翻译：提供了与欧洲的DVB-T地面数字广播系统兼容并将电池节省在移动终端中的数字广播的传输方法。 DVB-T中的超帧被分成各自包括多个符号的单元，以便每个时隙中可以携带整数个TS分组。至少有一个时隙用于传输一个服务。能量色散，里德 - 所罗门编码，字节交织，卷积编码和时间交织都适用于每个服务。当作为所提供的业务发送用于固定终端的移动终端接收和服务的业务时，可以在承载移动接收机业务的时隙之前和之后发送零分组，使得固定接收业务和移动接收业务不混合。如果固定终端处理移动接收服务的TS分组作为错误分组，则在接收中可能没有问题。

8. 发明授权

US08483189B2 OFDM signal transmission method, transmission apparatus, and reception apparatus 有权
公开(公告)号：US08483189B2
公开(公告)日：2013-07-09
申请号：US10548377
申请日：2004-03-08
申请人： Akira Kisoda , Sadashi Kageyama , Tomohiro Kimura , Hiroki Furukawa , Kenichiro Hayashi , Yuji Nakai
发明人： Akira Kisoda , Sadashi Kageyama , Tomohiro Kimura , Hiroki Furukawa , Kenichiro Hayashi , Yuji Nakai
IPC分类号： H04B7/212 , H04B7/26
CPC分类号： H04W72/0446 , H04B7/2643 , H04L1/0041 , H04L1/0065 , H04L1/0071 , H04L5/0044 , H04L5/0048 , H04L27/2602 , H04L27/2647 , H04L27/2657 , H04L27/2662 , H04L2025/03414 , H04N5/4401 , H04N5/455 , H04N21/2383 , H04N21/41407 , H04N21/4382 , H04N21/6112
摘要： A transmission method of a digital broadcast, which is compatible with a DVB-T terrestrial digital broadcast system in Europe, saves a battery in a mobile terminal. Superframes in DVB-T are divided into units each including plural symbols so that an integer number of TS packets can be carried in each slot. At least one slot is used to transmit one service. Energy dispersion, Reed-Solomon coding, byte interleaving, convolutional coding, and time interleaving are applied to each service. When services for mobile terminal reception and services for fixed terminals are transmitted as the provided services, null packets may be transmitted before and after the slot carrying the mobile receiver service so that the fixed reception service and the mobile reception services are not mixed.

9. 发明申请

US20070110105A1 Apparatus and a method for receiving a multiplexed broadcast signal carrying a plurality of services 审中-公开
标题翻译：用于接收携带多个业务的复用广播信号的装置和方法
公开(公告)号：US20070110105A1
公开(公告)日：2007-05-17
申请号：US10577484
申请日：2004-10-26
申请人： Izumi Usuki , Sadashi Kageyama , Akira Kisoda , Hidekuni Yomo
发明人： Izumi Usuki , Sadashi Kageyama , Akira Kisoda , Hidekuni Yomo
IPC分类号： H04H1/04
CPC分类号： H04H20/26 , H04H20/33 , H04H60/12 , H04N21/2365 , H04N21/4347 , H04N21/4383 , H04N21/4384 , H04N21/64315
摘要： In communication transmitting a first stream (intermittent data portion) for burst transmission of packet sets and a second stream (continuous data portion) for transmitting packets at a speed determined by the transmission rate required for the service, the second stream related to the selected service is received and reproduced for the selected service when a service is selected until intermittent data transmitted in the first stream can be received, and reception and playback of the first stream begins when transmission of the intermittent data for the selected service in the first stream begins.
摘要翻译：在通信中发送用于分组集合的突发传输的第一流（间歇数据部分）和用于以由服务所需的传输速率确定的速度发送分组的第二流（连续数据部分），与所选服务相关的第二流当选择服务直到在第一流中发送的间歇数据可以被接收为止为止，对所选择的服务进行接收和再现，并且当第一流中所选择的服务的间歇数据的传输开始时，第一流的接收和重放开始。

10. 发明申请

US20060239299A1 Extra error correcting method for zapping stream ts packet 审中-公开
标题翻译：用于切换流ts包的额外纠错方法
公开(公告)号：US20060239299A1
公开(公告)日：2006-10-26
申请号：US10568957
申请日：2004-01-08
申请人： Albrecht Scheid , Thomas Kursawe , Izumi Usuki , Sadashi Kageyama , Akira Kisoda
发明人： Albrecht Scheid , Thomas Kursawe , Izumi Usuki , Sadashi Kageyama , Akira Kisoda
IPC分类号： H04J3/24
CPC分类号： H04L1/0078 , H04L1/0057 , H04N19/70 , H04N19/89 , H04N21/23424 , H04N21/44016
摘要： Although the capacity of a packet is reduced, a parity code generated by a shortened error correction code of RS (255,191) is inserted into a private data field of an adaptation field of a TS packet. In the adaptation field, as positions where the parity codes are inserted, two positions can be used. The first position is a “stuffing byte” field the length of which is indirectly known on the basis of an adaptation field length field. The second position is a “transport private data” field the length of which can be directly described by a transport private data length field.
摘要翻译：尽管分组的容量减小，但由RS（255,191）的缩短的纠错码生成的奇偶校验码被插入到TS分组的适配字段的专用数据字段中。在适配字段中，作为插入奇偶码的位置，可以使用两个位置。第一个位置是一个“填充字节”字段，它的长度是基于自适应字段长度字段间接知道的。第二个位置是一个“传输专用数据”字段，其长度可以由传输专用数据长度字段直接描述。

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