公开(公告)号：US20080175221A1

公开(公告)日：2008-07-24

申请号：US10569491

申请日：2005-09-16

申请人： Hideki Nakahara ,  Hitoshi Takai ,  Hidetoshi Yamasaki ,  Kenji Miyanaga ,  Koichiro Tanaka

发明人： Hideki Nakahara ,  Hitoshi Takai ,  Hidetoshi Yamasaki ,  Kenji Miyanaga ,  Koichiro Tanaka

IPC分类号： H04J3/06

CPC分类号： H04L1/1887 ,  H04B7/022 ,  H04B7/0667 ,  H04B7/0676 ,  H04B7/15592 ,  H04W84/042 ,  H04W84/047

摘要： The present invention provides a wireless transmission system in which it is possible to exert a maximum path diversity effect even if the maximum number of effective branches is limited to a small number. A transmission timing control section (23) determines a transmission start timing to be a timing obtained by delaying a reference timing by a predetermined delay amount. A modulation section (21) modulates a signal by a modulation scheme such that an anti-multipath property is exerted when the signal is demodulated on a receiver side, and transmits the modulated signal at the transmission start timing. In a receiving station (12), a demodulation section (33) demodulates the receive signal to obtain receive data. The predetermined delay amount is such that signals are received at the receiving station (12) at a plurality of signal-receiving timings, and the number of signal-receiving timings is less than or equal to a predetermined maximum number of effective branches, a difference between the signal-receiving timings is greater than or equal to a predetermined delay resolution and is less than or equal to a predetermined maximum delay.

摘要翻译： 本发明提供一种无线传输系统，其中即使最大数量的有效分支被限制为少数，也可以施加最大路径分集效应。 发送定时控制部（23）将发送开始定时确定为通过将基准定时延迟预定延迟量而获得的定时。 调制部（21）通过调制方式对信号进行调制，使得当在接收机侧解调信号时施加抗多径特性，并在发送开始定时发送调制信号。 在接收站（12）中，解调部（33）对接收信号进行解调，得到接收数据。 预定延迟量使得在接收站（12）处以多个信号接收定时接收信号，并且信号接收定时的数量小于或等于预定的最大有效分支数，差 在信号接收定时之间大于或等于预定的延迟分辨率并且小于或等于预定的最大延迟。

公开(公告)号：US07756218B2

公开(公告)日：2010-07-13

申请号：US10569491

申请日：2005-09-16

申请人： Hideki Nakahara ,  Hitoshi Takai ,  Hidetoshi Yamasaki ,  Kenji Miyanaga ,  Koichiro Tanaka

发明人： Hideki Nakahara ,  Hitoshi Takai ,  Hidetoshi Yamasaki ,  Kenji Miyanaga ,  Koichiro Tanaka

IPC分类号： H04L27/00

CPC分类号： H04L1/1887 ,  H04B7/022 ,  H04B7/0667 ,  H04B7/0676 ,  H04B7/15592 ,  H04W84/042 ,  H04W84/047

摘要： A wireless transmission system exerts a maximum path diversity effect even if the maximum number of effective branches is limited to a small number. A transmission timing control section determines a transmission start timing to be a timing obtained by delaying a reference timing by a predetermined delay amount. A modulation section modulates a signal by a modulation scheme such that an anti-multipath property is exerted when the signal is demodulated on a receiver side, and transmits the modulated signal at the transmission start timing. In a receiving station, a demodulation section demodulates the receive signal to obtain receive data. The predetermined delay amount is such that signals are received at the receiving station at a plurality of signal-receiving timings, and the number of signal-receiving timings is less than or equal to a predetermined maximum number of effective branches, a difference between the signal-receiving timings is greater than or equal to a predetermined delay resolution and is less than or equal to a predetermined maximum delay.

摘要翻译： 无线传输系统即使最大数量的有效分支被限制为少数，也施加最大路径分集效应。 发送定时控制部分将发送开始定时确定为通过将基准定时延迟预定延迟量而获得的定时。 调制部通过调制方式对信号进行调制，使得当在接收机侧解调信号时施加反多径特性，并在发送开始定时发送调制信号。 在接收站中，解调部分解调接收信号以获得接收数据。 预定延迟量使得在多个信号接收定时在接收站处接收信号，并且信号接收定时的数量小于或等于预定的最大有效分支数，信号之间的差 接收定时大于或等于预定的延迟分辨率，并且小于或等于预定的最大延迟。

公开(公告)号：US08229015B2

公开(公告)日：2012-07-24

申请号：US12282722

申请日：2007-03-16

申请人： Hitoshi Takai ,  Kenji Miyanaga ,  Hideki Nakahara ,  Hidetoshi Yamasaki

发明人： Hitoshi Takai ,  Kenji Miyanaga ,  Hideki Nakahara ,  Hidetoshi Yamasaki

IPC分类号： H04B7/02 ,  H04L1/02

CPC分类号： H04B7/022 ,  H04B7/026 ,  H04W56/0045

摘要： A wireless transmission system capable of exerting a maximum path diversity effect by using combinations formed by symbol waveforms. A transmission timing controlling section (23) determines a transmission start timing. A modulating section (21) modulates a signal by using one of a plurality of symbol waveform candidates and by utilizing a modulation scheme in which a phase transition of a symbol waveform represents a waveform being changed, and then transmits the modulated signal at a transmission start timing. A predetermined delay amount is set such that (i) the number of reception timings, each indicating a timing at which a receiving station (12) receives a signal, is a plural number and is less than or equal to a maximum number of effective branches for each symbol waveform, and (ii) each time difference between the reception timings is greater than or equal to a delay resolution and less than or equal to a maximum delay.

摘要翻译： 一种能够通过使用由符号波形形成的组合来发挥最大路径分集效应的无线传输系统。 发送定时控制部（23）确定发送开始定时。 调制部（21）通过使用多个符号波形候选中的一个来调制信号，并且通过利用其中符号波形的相变表示正被改变的波形的调制方案，然后在发送开始时发送调制信号 定时。 设定预定的延迟量，使得（i）接收定时的数量，每个接收定时指示接收站（12）接收信号的定时是多个并且小于或等于有效分支的最大数量 对于每个符号波形，以及（ii）接收定时之间的每个时间差大于或等于延迟分辨率并且小于或等于最大延迟。

公开(公告)号：US08050620B2

公开(公告)日：2011-11-01

申请号：US12162013

申请日：2007-01-31

申请人： Kenji Miyanaga ,  Hitoshi Takai ,  Hideki Nakahara ,  Hidetoshi Yamasaki

发明人： Kenji Miyanaga ,  Hitoshi Takai ,  Hideki Nakahara ,  Hidetoshi Yamasaki

IPC分类号： H04B3/36 ,  H04B7/15 ,  H04B7/14

CPC分类号： H04B7/2606 ,  H04B7/022 ,  H04B7/026 ,  H04B7/15592 ,  H04L27/18 ,  H04L27/2601

摘要： A wireless station is used as one of a plurality of relay stations forming transmission paths, respectively, different from each other, in a wireless transmission system for transmitting a packet from a transmitting station to a receiving station through the plurality of relay stations. The wireless station includes a reception section for receiving a packet transmitted from the transmitting station, and receiving a packet which is transmitted, based on the packet transmitted from the transmitting station, from another relay station, and is transmitted before the one of the plurality of relay stations performs transmission, by using a transmission parameter for obtaining a path diversity effect in the wireless transmission system.

摘要翻译： 在用于通过多个中继站从发送站向接收站发送分组的无线传输系统中，无线站被用作形成彼此不同的传输路径的多个中继站之一。 无线站包括接收部分，用于接收从发送站发送的分组，并且基于从发送站发送的分组，从另一中继站接收发送的分组，并且在多个 中继站通过使用用于获得无线传输系统中的路径分集效应的传输参数来执行传输。

公开(公告)号：US20070248038A1

公开(公告)日：2007-10-25

申请号：US11663066

申请日：2005-09-26

申请人： Hidetoshi Yamasaki ,  Hitoshi Takai ,  Hideki Nakahara ,  Kenji Miyanaga

发明人： Hidetoshi Yamasaki ,  Hitoshi Takai ,  Hideki Nakahara ,  Kenji Miyanaga

IPC分类号： H04Q7/00

CPC分类号： H04B7/022 ,  H04W84/18

摘要： A wireless transmission system capable of performing a multi-station simultaneous transmission of data, that is, simultaneously transmitting data by wireless to a plurality of stations. The wireless transmission system includes a plurality of wireless stations for transmitting/receiving data and it constitutes a system for path diversity by use of a wireless station at the transmitting end, a multipath transmission path, and a wireless station at the receiving end. At least one of the plurality of wireless stations decides, in accordance with a response packet responsive to a multi-station simultaneous transmission request packet transmitted by the wireless station or other stations, a plurality of delay amounts relative to a reference timing during the multi-station simultaneous transmission in the wireless transmission system. It is arranged that each difference between the plurality of delay amounts be greater than a predetermined delay resolution and that the difference between the maximum and minimum values in the plurality of delay amounts be smaller than a predetermined maximum delay.

摘要翻译： 一种无线传输系统，能够进行数据的多站同时传输，即通过无线向多个站同时发送数据。 无线传输系统包括用于发送/接收数据的多个无线站，并且它通过使用发送端的无线站，多径传输路径和接收端的无线站构成用于路径分集的系统。 所述多个无线站中的至少一个根据响应于由所述无线站或其他站发送的多站同时发送请求分组的响应分组，决定多个相对于所述多个时间段期间的基准定时的延迟量， 在无线传输系统中同时传输。 设置多个延迟量之间的每个差异大于预定延迟分辨率，并且多个延迟量中的最大值与最小值之间的差小于预定的最大延迟。

公开(公告)号：US20100239039A1

公开(公告)日：2010-09-23

申请号：US12294568

申请日：2007-03-20

申请人： Hitoshi Takai ,  Hidetoshi Yamasaki ,  Hideki Nakahara ,  Kenji Miyanaga

发明人： Hitoshi Takai ,  Hidetoshi Yamasaki ,  Hideki Nakahara ,  Kenji Miyanaga

IPC分类号： H04B7/02

CPC分类号： H04B7/2662

摘要： A wireless transmission system capable of performing multi-station simultaneous transmission of data by wireless is provided. The wireless transmission system includes a plurality of wireless stations for transmitting and receiving data. Transmitter-side wireless stations, a multipath channel, and receiver-side wireless stations constitute a system for path diversity. At least one wireless station among the wireless stations determines, depending on a response packet with respective to a multi-station simultaneous transmission request packet transmitted by itself or other stations, a plurality of delay amounts from a reference timing during multi-station simultaneous transmission in the wireless transmission system, and a plurality of symbol waveforms that are a basis for a modulated waveform. A difference between each delay amount is set to be larger than or equal to a predetermined delay resolution for each symbol waveform, and a difference between maximum and minimum values of the delay amounts is set to be smaller than or equal to a predetermined maximum delay.

摘要翻译： 提供能够通过无线方式进行数据同时多台传输的无线传输系统。 无线传输系统包括用于发送和接收数据的多个无线站。 发射机侧无线站，多路径信道和接收机侧无线站构成路径分集的系统。 无线站中的至少一个无线站根据与其自身或其他站发送的多站同时发送请求分组相对应的响应分组来确定在多站同时传输期间的参考定时的多个延迟量 无线传输系统以及作为调制波形的基础的多个符号波形。 每个延迟量之间的差设定为大于或等于每个符号波形的预定延迟分辨率，并且延迟量的最大值和最小值之间的差设定为小于或等于预定最大延迟。

公开(公告)号：US20090097584A1

公开(公告)日：2009-04-16

申请号：US12282722

申请日：2007-03-16

申请人： Hitoshi Takai ,  Kenji Miyanaga ,  Hideki Nakahara ,  Hidetoshi Yamasaki

发明人： Hitoshi Takai ,  Kenji Miyanaga ,  Hideki Nakahara ,  Hidetoshi Yamasaki

IPC分类号： H04B7/02

CPC分类号： H04B7/022 ,  H04B7/026 ,  H04W56/0045

摘要： The present invention provides a wireless transmission system capable of exerting a maximum path diversity effect by using combinations formed by a plurality of symbol waveforms even when a maximum number of effective branches is limited to a small number. A transmission timing controlling section (23) determines a timing delayed from a reference timing by a predetermined delay amount as a transmission start timing. A modulating section (21) modulates a signal, by using one symbol waveform among a plurality of symbol waveform candidates, utilizing a modulation scheme in which a phase transition of a symbol waveform, which exerts an anti-multipath property by demodulating the signal on the receiving side, represents a waveform being changed, and then transmits the modulated signal at a transmission start timing. A predetermined delay amount is set such that the number of reception timings, each indicating a timing at which a receiving station (12) receives a signal, is a plural number and is less than or equal to a predetermined maximum number of effective branches for each symbol waveform, and such that each time difference between the reception timings is greater than or equal to a predetermined delay resolution and less than or equal to a predetermined maximum delay.

摘要翻译： 本发明提供一种能够通过使用由多个符号波形形成的组合来施加最大路径分集效应的无线传输系统，即使最大数量的有效分支被限制为少数。 发送定时控制部（23）将从基准定时延迟预定延迟量的定时作为发送开始定时。 调制部分（21）通过使用多个符号波形候选中的一个符号波形来调制信号，利用调制方案，其中通过解调信号上的信号来发出抗多径特性的符号波形的相位转换 接收侧表示正在改变的波形，然后在发送开始定时发送调制信号。 设定规定的延迟量，使得接收定时的数量，每个接收定时指示接收站（12）接收信号的定时是多个，并且小于或等于每个的预定最大有效分支数 符号波形，并且使得接收定时之间的每个时间差大于或等于预定延迟分辨率并小于或等于预定最大延迟。

公开(公告)号：US20090036052A1

公开(公告)日：2009-02-05

申请号：US12162013

申请日：2007-01-31

申请人： Kenji Miyanaga ,  Hitoshi Takai ,  Hideki Nakahara ,  Hidetoshi Yamasaki

发明人： Kenji Miyanaga ,  Hitoshi Takai ,  Hideki Nakahara ,  Hidetoshi Yamasaki

IPC分类号： H04B7/14

CPC分类号： H04B7/2606 ,  H04B7/022 ,  H04B7/026 ,  H04B7/15592 ,  H04L27/18 ,  H04L27/2601

摘要： A wireless station according to the present invention is a wireless station used as one of a plurality of relay stations forming transmission paths, respectively, different from each other, in a wireless transmission system for transmitting a packet from a transmitting station to a receiving station through the plurality of relay stations, and the wireless station comprises: a reception section for receiving a packet transmitted from the transmitting station, and receiving a packet which is transmitted, based on the packet transmitted from the transmitting station, from a relay station other than the one of the plurality of relay stations, and is transmitted before the one of the plurality of relay stations performs transmission, by using a transmission parameter for obtaining a path diversity effect in the wireless transmission system; a transmission parameter estimation section for estimating the transmission parameter used by the relay station other than the one of the plurality of relay stations, based on the packet received by the reception section from the relay station other than the one of the plurality of relay stations; a transmission parameter selection section for selecting the transmission parameter other than the transmission parameter which is used by the relay station other than the one of the plurality of relay stations, and is estimated by the transmission parameter estimation section; and a transmission section for transmitting, to the receiving station, the packet received by the reception section from the transmitting station, by using the transmission parameter selected by the transmission parameter selection section.

摘要翻译： 根据本发明的无线站是在用于从发送站向接收站发送分组的无线传输系统中分别形成彼此不同的传输路径的多个中继站之一的无线站，通过 所述多个中继站和所述无线站包括：接收部分，用于接收从所述发送站发送的分组，并且基于从所述发送站发送的分组，从除所述发送站以外的中继站接收发送的分组 多个中继站中的一个，并且在多个中继站中的一个中继站进行传输之前通过使用用于获得无线传输系统中的路径分集效应的传输参数来发送; 发送参数估计部，其基于由所述接收部从除了所述多个中继站之一以外的所述中继站接收到的分组，估计所述中继站使用的所述多个中继站以外的所述发送参数; 传输参数选择部分，用于选择除了所述多个中继站中的一个以外的所述中继站使用的所述传输参数以外的所述传输参数，并且由所述传输参数估计部分估计; 以及发送部，其通过使用由所述发送参数选择部选择的发送参数向所述接收站发送由所述接收部从所述发送站接收的分组。

公开(公告)号：US20080198835A1

公开(公告)日：2008-08-21

申请号：US10569730

申请日：2005-09-16

申请人： Kenji Miyanaga ,  Hideki Nakahara ,  Hidetoshi Yamasaki ,  Hitoshi Takai

发明人： Kenji Miyanaga ,  Hideki Nakahara ,  Hidetoshi Yamasaki ,  Hitoshi Takai

IPC分类号： H04J3/06

CPC分类号： H04L1/1887 ,  H04B7/022 ,  H04B7/026 ,  H04B7/0676 ,  H04B7/155 ,  H04L2001/0093 ,  H04W56/00 ,  H04W84/042 ,  H04W84/047

摘要： The present invention provides a wireless station capable of increasing the probability that a path diversity effect can be obtained in a case where a plurality of wireless stations transmit packets using a modulation/demodulation scheme with an anti-multipath property. A delay amount determining section (48) randomly selects a delay amount from among a plurality of candidate values. A transmission timing control section (47) determines a transmission start timing, at which to start the packet transmission, to be a timing obtained by delaying a reference timing by the delay amount selected by the delay amount determining section. At the transmission start timing, a modulation section (49) transmits the packet via an RF section (42) and an antenna (41). The difference between the candidate values is greater than or equal to a predetermined delay resolution, and the difference between a maximum candidate value and a minimum candidate value is less than or equal to a predetermined maximum delay.

摘要翻译： 本发明提供一种能够增加在多个无线站使用具有抗多径性质的调制解调方案来发送分组的情况下能够获得路径分集效果的概率的无线站。 延迟量确定部分（48）从多个候选值中随机选择延迟量。 发送定时控制部分47确定开始分组发送的发送开始定时是通过将参考定时延迟由延迟量确定部选择的延迟量而获得的定时。 在发送开始定时，调制部（49）经由RF部（42）和天线（41）发送分组。 候选值之间的差大于或等于预定延迟分辨率，并且最大候选值与最小候选值之间的差小于或等于预定最大延迟。

公开(公告)号：US08675759B2

公开(公告)日：2014-03-18

申请号：US12294568

申请日：2007-03-20

申请人： Hitoshi Takai ,  Hidetoshi Yamasaki ,  Hideki Nakahara ,  Kenji Miyanaga

发明人： Hitoshi Takai ,  Hidetoshi Yamasaki ,  Hideki Nakahara ,  Kenji Miyanaga

IPC分类号： H04B7/02

CPC分类号： H04B7/2662

摘要： A wireless transmission system performs multi-station simultaneous transmission of data. The wireless transmission system includes wireless stations for transmitting and receiving data. Transmitter-side wireless stations, a multipath channel, and receiver-side wireless stations constitute a system for path diversity. At least one wireless station among the wireless stations determines, depending on a response packet with respective to a multi-station simultaneous transmission request packet transmitted by itself or other stations, delay amounts from a reference timing during multi-station simultaneous transmission in the wireless transmission system, and symbol waveforms that are a basis for a modulated waveform. A difference between each delay amount is set to be larger than or equal to a predetermined delay resolution for each symbol waveform, and a difference between maximum and minimum values of the delay amounts is set to be smaller than or equal to a predetermined maximum delay.

摘要翻译： 无线传输系统执行多站同时传输数据。 无线传输系统包括用于发送和接收数据的无线站。 发射机侧无线站，多路径信道和接收机侧无线站构成路径分集的系统。 无线站中的至少一个无线站根据与其自身或其他站发送的多站同时发送请求分组相对应的响应分组来确定在无线发送中的多站同时发送期间的基准定时的延迟量 系统和符号波形，这是调制波形的基础。 每个延迟量之间的差设定为大于或等于每个符号波形的预定延迟分辨率，并且延迟量的最大值和最小值之间的差被设置为小于或等于预定最大延迟。