公开(公告)号：US5493436A

公开(公告)日：1996-02-20

申请号：US408325

申请日：1995-03-21

申请人： Yoshio Karasawa ,  Takashi Matsudo ,  Hisato Iwai ,  Takayasu Shiokawa

发明人： Yoshio Karasawa ,  Takashi Matsudo ,  Hisato Iwai ,  Takayasu Shiokawa

IPC分类号： H04B10/11 ,  H04B7/26 ,  H04B10/032 ,  H04B10/07 ,  H04B10/112 ,  H04B10/22 ,  H04B10/10

CPC分类号： H04B10/1125 ,  H04B10/25759

摘要： A system for communicating between mobile units and an exchange station, with a radio frequency signal, in which an electric signal from a telephone exchange of the telephone station is converted into an optical signal with an electricity-to-light converter. The optical signal is carried via an optical fiber cable to a transmission communication antenna for emission, with amplification of the optical signal if necessary. The emitted signal is received by a receiving communication antenna, amplified with an optical amplifier if necessary, and converted to an electric signal with a light-to-electricity converter.

摘要翻译： 一种用于在移动单元和具有射频信号的交换站之间进行通信的系统，其中来自电话台的电话交换机的电信号被转换成具有电 - 光转换器的光信号。 光信号通过光纤电缆传送到用于发射的传输通信天线，如果需要则放大光信号。 发射信号由接收通信天线接收，如果需要用光放大器放大，并用光 - 电转换器转换成电信号。

公开(公告)号：US5347535A

公开(公告)日：1994-09-13

申请号：US25659

申请日：1993-03-03

申请人： Yoshio Karasawa ,  Hisato Iwai

发明人： Yoshio Karasawa ,  Hisato Iwai

IPC分类号： H04B7/02 ,  H04B7/08 ,  H04B7/26 ,  H04B10/00 ,  H04B10/80 ,  H04Q7/36 ,  H04B7/04

CPC分类号： H04B7/0894

摘要： A CDMA communication system using a spreading code has a plurality of mobile stations and at least one base station. The mobile stations and the base station are provided with respective receiving sections, each of which has a path diversity function for reducing multipath fading. The base station includes an array antenna having a plurality of integrated antenna elements spaced by a distance substantially equal to one to several wavelengths from each other so as to produce a space diversity effect. A plurality of delay devices are coupled with the respective antenna elements, for applying time delays to signals which pass through the respective antenna elements. The time delay are different from each other by a one symbol period of the spreading code or more.

摘要翻译： 使用扩展码的CDMA通信系统具有多个移动站和至少一个基站。 移动站和基站设置有各自的接收部分，每个接收部分具有用于减少多径衰落的路径分集功能。 该基站包括阵列天线，该阵列天线具有彼此间隔大约等于一至几个波长的距离的多个集成天线元件，以产生空间分集效应。 多个延迟装置与相应的天线元件耦合，以对通过各个天线元件的信号施加时间延迟。 时间延迟彼此相差扩展码的一个符号周期或更多。

公开(公告)号：US5204981A

公开(公告)日：1993-04-20

申请号：US663404

申请日：1991-03-01

申请人： Yoshio Karasawa ,  Masayuki Yasunaga ,  Hisato Iwai

发明人： Yoshio Karasawa ,  Masayuki Yasunaga ,  Hisato Iwai

IPC分类号： H04B7/08 ,  H04B7/155 ,  H04L1/06

CPC分类号： H04B7/086

摘要： Accordingly to the present invention, when an incidence angle of a direct wave or a satellite elevation angle reaches a predetermined value, signals from two (or more) antennas, which are disposed at positions where variations in the field intensities of radio waves recevied by the two antennas are negatively correlated (i.e. when the received signal level of one of them is low, the received signal level of the other is high) or uncorrelated (i.e. the variations are not related to each other), are successively or discretely switched at a suitable switching period, by which burst-like errors are spread with time to perform the de-interleave or interleave function in decoding transmitted signals.

摘要翻译： 根据本发明，当直接波或卫星仰角的入射角达到预定值时，来自两个（或更多个）天线的信号被设置在由该天线接收的无线电波的场强度的变化的位置处 两个天线是负相关的（即当其中一个的接收信号电平低，另一个的接收信号电平高）或不相关（即，变化彼此不相关）时，在一个 合适的切换周期，突发式错误随时间扩展以在解码发送信号中执行去交织或交织功能。

公开(公告)号：US20080014963A1

公开(公告)日：2008-01-17

申请号：US11730245

申请日：2007-03-30

申请人： Yasuhisa Takizawa ,  Peter Davis ,  Makoto Kawai ,  Hisato Iwai ,  Akira Yamaguchi ,  Sadao Obana

发明人： Yasuhisa Takizawa ,  Peter Davis ,  Makoto Kawai ,  Hisato Iwai ,  Akira Yamaguchi ,  Sadao Obana

IPC分类号： H04Q7/20

CPC分类号： H04W64/00 ,  G01S5/14

摘要： A radio apparatus forming a radio network system calculates a calculated distance, based on a tentative self-position and tentative positions of a plurality of radio apparatuses existing in the vicinity. The radio apparatus successively and autonomously corrects the tentative self-position so that the calculated distance comes closer to the measured distance, relying more heavily on the calculated distance than the measured distance between itself and each of the plurality of radio apparatuses, and determines the position of itself. Other radio apparatuses also successively correct the tentative self-positions by the same method as the radio apparatus, and determine the positions of themselves.

摘要翻译： 形成无线电网络系统的无线电设备基于存在于附近的多个无线电设备的临时自身位置和临时位置来计算计算出的距离。 无线电设备相继地并且自主地校正临时自身位置，使得所计算的距离更靠近测量的距离，更依赖于所计算的距离，而不是其测量的与多个无线电设备中的每一个之间的距离，并且确定位置 本身。 其他无线电设备也通过与无线电设备相同的方法连续校正临时自身位置，并且确定其自身的位置。

公开(公告)号：US20100166043A1

公开(公告)日：2010-07-01

申请号：US12161128

申请日：2007-01-17

申请人： Hideichi Sasaoka ,  Hisato Iwai ,  Yusuke Miyamoto

发明人： Hideichi Sasaoka ,  Hisato Iwai ,  Yusuke Miyamoto

IPC分类号： H04B1/707

CPC分类号： H04L5/0021 ,  H04B2201/709709 ,  H04J13/0048 ,  H04J2013/165

摘要： A MC-CDMA transmitter and an MC-CDMA receiver are provided, which use a novel orthogonal spreading code that allows an effect by a delay wave to appear in only a specific user. An MC-CDMA system includes: a transmitter which multiplies a transmitting signal by a sinusoidal signal which has an amplitude of r and is orthogonal as a result that the frequency periods are different among users, in a frequency domain to be spread and split into orthogonal sub-carriers, and multiplexes the sub-carriers; and a receiver for receiving a transmitting signal from the transmitter in a manner that a sinusoidal signal, which has an amplitude of r and is orthogonal as a result that the frequency periods are different among users, is multiplied by the transmitting signal in a frequency domain, and the resultant is inversely spread.

摘要翻译： 提供了一种MC-CDMA发射机和MC-CDMA接收机，其使用允许延迟波的影响仅出现在特定用户中的新颖的正交扩展码。 MC-CDMA系统包括：发射机，在发射的频域中将发射信号乘以正弦信号，该正弦信号具有振幅为r并且正交的频率周期在用户之间不同，并被分裂为正交 子载波，并复用子载波; 以及接收器，其以使得具有振幅r并且作为用户之间的频率周期不同的结果正交的正弦信号与来自发送器的发送信号相乘的频率域中的发送信号 ，结果反向扩散。

公开(公告)号：US07006475B1

公开(公告)日：2006-02-28

申请号：US09786685

申请日：1999-12-21

申请人： Toshiro Suzuki ,  Takashi Yano ,  Takaki Uta ,  Katsuhiko Tsunehara ,  Hisato Iwai

发明人： Toshiro Suzuki ,  Takashi Yano ,  Takaki Uta ,  Katsuhiko Tsunehara ,  Hisato Iwai

IPC分类号： H04B7/216

CPC分类号： H04B7/2618

摘要： On the side of a mobile station, interference of a perch channel with call control information or a traffic channel is reduced, realizing stable communication. In a method of CDMA communication in which communication is made through the traffic channel for transmitting user data and the perch channel for transmitting a spreading code used for demodulation of the user data, the traffic channel has a call control channel subjected to the time division multiplex, and that call control channel and a part of the perch channel, which is non-orthogonal to the call control channel, are arranged not to overlap with each other in a time base.

摘要翻译： 在移动台侧，导频信道与呼叫控制信息或业务信道的干扰减少，实现稳定的通信。 在通过用于发送用户数据的业务信道进行通信并且用于发送用于解调用户数据的扩展码的导频信道的CDMA通信的方法中，业务信道具有经过时分复用的呼叫控制信道 ，并且该呼叫控制信道和与呼叫控制信道非正交的导频信道的一部分被布置为在时基上彼此不重叠。

公开(公告)号：US06895235B2

公开(公告)日：2005-05-17

申请号：US10062694

申请日：2002-01-31

申请人： Jay Padgett ,  Hisato Iwai

发明人： Jay Padgett ,  Hisato Iwai

IPC分类号： H04L12/56 ,  H04W4/00 ,  H04W4/24 ,  H04W28/08 ,  H04M11/00

CPC分类号： H04W4/00 ,  H04W4/24 ,  H04W28/08

摘要： Methods and systems are provided for use in a wireless network that includes a base station and a mobile station. Service may be provided by the base station to the mobile station based on the traffic load on the network. When a request for a service is received at the base station, the cost of the service is determined. The request is granted if the determined cost is less than or equal to a threshold that is responsive to a load on the network.

摘要翻译： 提供了用于包括基站和移动台的无线网络中的方法和系统。 可以基于网络上的业务负载，由基站向移动台提供服务。 当在基站接收到对服务的请求时，确定服务的成本。 如果确定的成本小于或等于响应于网络上的负载的阈值，则该请求被授予。

公开(公告)号：US06351649B1

公开(公告)日：2002-02-26

申请号：US09276660

申请日：1999-03-26

申请人： Fumio Watanabe ,  Yoshio Takeuchi ,  Toshinori Suzuki ,  Hisato Iwai ,  Akira Yamaguchi

发明人： Fumio Watanabe ,  Yoshio Takeuchi ,  Toshinori Suzuki ,  Hisato Iwai ,  Akira Yamaguchi

IPC分类号： H04B701

CPC分类号： H04W52/242 ,  H04B17/318 ,  H04B17/345 ,  H04W16/14 ,  H04W52/146 ,  H04W88/06

摘要： A mobile communication system includes a first and second systems. Each of the first and second systems has a land station and at least one mobile terminal capable of communicating with the land station. The land station of the first system has a broadcasting channel transmission unit for transmitting status information via a broadcasting channel, and the mobile terminal of the second system has a broadcasting channel receiving unit for receiving information in the broadcasting channel to obtain a broadcasting channel receiving condition and the status information, a giving interference estimation unit for estimating giving interference level onto communication of the first system by the second system based upon the obtained broadcasting channel receiving condition and the obtained status information, and an output signal level control unit for controlling output signal level of the mobile terminal of the second system based upon the estimated giving interference level.

摘要翻译： 移动通信系统包括第一和第二系统。 第一和第二系统中的每一个具有陆地站和能够与地面站通信的至少一个移动终端。 第一系统的地面站具有用于经由广播信道发送状态信息的广播频道传输单元，并且第二系统的移动终端具有广播频道接收单元，用于在广播频道中接收信息以获得广播频道接收条件 状态信息，基于所获得的广播信道接收条件和所获得的状态信息，估计由第二系统对第一系统的通信给出干扰电平的给出干扰估计单元，以及用于控制输出信号的输出信号电平控制单元 基于所估计的给定干扰电平，第二系统的移动终端的电平。

公开(公告)号：US08060107B2

公开(公告)日：2011-11-15

申请号：US11730245

申请日：2007-03-30

申请人： Yasuhisa Takizawa ,  Peter Davis ,  Makoto Kawai ,  Hisato Iwai ,  Akira Yamaguchi ,  Sadao Obana

发明人： Yasuhisa Takizawa ,  Peter Davis ,  Makoto Kawai ,  Hisato Iwai ,  Akira Yamaguchi ,  Sadao Obana

IPC分类号： H04W24/00

CPC分类号： H04W64/00 ,  G01S5/14

摘要： A radio apparatus forming a radio network system calculates a calculated distance, based on a tentative self-position and tentative positions of a plurality of radio apparatuses existing in the vicinity. The radio apparatus successively and autonomously corrects the tentative self-position so that the calculated distance comes closer to the measured distance, relying more heavily on the calculated distance than the measured distance between itself and each of the plurality of radio apparatuses, and determines the position of itself. Other radio apparatuses also successively correct the tentative self-positions by the same method as the radio apparatus, and determine the positions of themselves.

摘要翻译： 形成无线电网络系统的无线电设备基于存在于附近的多个无线电设备的临时自身位置和临时位置来计算计算出的距离。 无线电设备相继地并且自主地校正临时自身位置，使得所计算的距离更靠近测量的距离，更依赖于所计算的距离，而不是其测量的与多个无线电设备中的每一个之间的距离，并且确定位置 本身。 其他无线电设备也通过与无线电设备相同的方法连续校正临时自身位置，并且确定其自身的位置。

公开(公告)号：US08054866B2

公开(公告)日：2011-11-08

申请号：US12161128

申请日：2007-01-17

申请人： Hideichi Sasaoka ,  Hisato Iwai ,  Yusuke Miyamoto

发明人： Hideichi Sasaoka ,  Hisato Iwai ,  Yusuke Miyamoto

IPC分类号： H04B1/00 ,  H04L27/28

CPC分类号： H04L5/0021 ,  H04B2201/709709 ,  H04J13/0048 ,  H04J2013/165

摘要： A MC-CDMA transmitter and an MC-CDMA receiver are provided, which use a novel orthogonal spreading code that allows an effect by a delay wave to appear in only a specific user. An MC-CDMA system includes: a transmitter which multiplies a transmitting signal by a sinusoidal signal which has an amplitude of r and is orthogonal as a result that the frequency periods are different among users, in a frequency domain to be spread and split into orthogonal sub-carriers, and multiplexes the sub-carriers; and a receiver for receiving a transmitting signal from the transmitter in a manner that a sinusoidal signal, which has an amplitude of r and is orthogonal as a result that the frequency periods are different among users, is multiplied by the transmitting signal in a frequency domain, and the resultant is inversely spread.

摘要翻译： 提供了一种MC-CDMA发射机和MC-CDMA接收机，其使用允许延迟波的影响仅出现在特定用户中的新颖的正交扩展码。 MC-CDMA系统包括：发射机，在发射的频域中将发射信号乘以正弦信号，该正弦信号具有振幅为r并且正交的频率周期在用户之间不同，并被分裂为正交 子载波，并复用子载波; 以及接收器，其以使得具有振幅r并且作为用户之间的频率周期不同的结果正交的正弦信号与来自发送器的发送信号相乘的频率域中的发送信号 ，结果反向扩散。