公开(公告)号：US06208701B1

公开(公告)日：2001-03-27

申请号：US08867806

申请日：1997-06-03

申请人： Katsuhiko Hiramatsu ,  Mitsuru Uesugi ,  Hiroaki Sudo

发明人： Katsuhiko Hiramatsu ,  Mitsuru Uesugi ,  Hiroaki Sudo

IPC分类号： H04L700

CPC分类号： H04L7/0054 ,  H04L7/0334 ,  H04L7/0337 ,  H04L7/041

摘要： The synchronizing apparatus includes a block for detecting a code from an input signal, a block for detecting from the code the variable points of the code at several times as high as the symbol rate, a block for calculating a histogram of the detected variables of the code to time, and a block for deciding that the phase number at which the calculated histogram takes the maximum value is a symbol synchronization point. This synchronizing apparatus detects the zero-cross points of an intermediate frequency band signal at N times as high as the symbol rate. It also calculates a histogram of detected time (0 to N−1). The time (0 to N−1) at which the histogram is the maximum within a predetermined detected time is selected as a symbol clock, and thereby symbol synchronization is established.

摘要翻译： 同步装置包括用于从输入信号中检测代码的块，用于从代码中检测代码的可变点数为符号速率的几倍的块，用于计算检测到的变量的直方图的块 代码到时间，以及用于确定计算的直方图获取最大值的相位数的块是符号同步点。 该同步装置检测中间频带信号的零交叉点的N倍于符号率。 它还计算检测时间的直方图（0到N-1）。 选择在预定检测时间内直方图为最大值的时间（0到N-1）作为符号时钟，从而建立符号同步。

公开(公告)号：US6111921A

公开(公告)日：2000-08-29

申请号：US28853

申请日：1998-02-24

申请人： Hiroaki Sudo ,  Katsuhiko Hiramatsu ,  Mitsuru Uesugi

发明人： Hiroaki Sudo ,  Katsuhiko Hiramatsu ,  Mitsuru Uesugi

IPC分类号： H04L1/00 ,  H04B1/10 ,  H04J11/00 ,  H04L1/20 ,  H04L27/20

CPC分类号： H04L1/206

摘要： An estimator of error rate is provided for reducing variations of an error pulse count value at burst signals of a received signal for digital mobile communications and thereby improving an accuracy of estimating an error rate. The estimator of error rate includes detectors for detecting that phase information derived from a baseband signal of an I channel (I signal) and a baseband signal of a Q channel (Q signal) is located in an error pulse generation area, detectors for detecting that envelope information of the I signal and the Q signal is located in the error pulse generation area, and a counter for detecting that the phase error signal and the envelope error signal are outputted and counting the signals. The estimator operates to estimate an error rate based on an error pulse count value at one period. The estimator operates to detect that the phase information and the envelope information are located in the error pulse generation area. This serves to suppress the probability of counting correct signals and reducing variations of a count value at the burst signals, thereby improving an accuracy of estimating an error rate.

摘要翻译： 提供误差率的估计器，用于减少用于数字移动通信的接收信号的脉冲串信号的误差脉冲计数值的变化，从而提高误差率的估计精度。 误差率的估计器包括用于检测从I信道（I信号）的基带信号和Q信道（Q信号）的基带信号导出的相位信息位于误差脉冲产生区域中的检测器，用于检测 I信号和Q信号的包络信息位于误差脉冲产生区域中，并且用于检测相位误差信号和包络误差信号的计数器，并对该信号进行计数。 估计器用于基于一个周期的错误脉冲计数值来估计错误率。 估计器操作以检测相位信息和包络信息位于错误脉冲产生区域中。 这用于抑制对正确信号进行计数并减少脉冲串信号处的计数值的变化的概率，从而提高误差率的估计精度。

公开(公告)号：US6069924A

公开(公告)日：2000-05-30

申请号：US27510

申请日：1998-02-20

申请人： Hiroaki Sudo ,  Katsuhiko Hiramatsu ,  Mitsuru Uesugi

发明人： Hiroaki Sudo ,  Katsuhiko Hiramatsu ,  Mitsuru Uesugi

IPC分类号： H04L27/22 ,  H04L1/00 ,  H04L27/227 ,  H04L27/233

CPC分类号： H04L1/0047 ,  H04L27/2332

摘要： A differential detector imparted with error correcting function for detecting a differentially phase shifted signal while performing error correction includes a one-symbol differential detector for performing phase comparison between a current input signal and a signal preceding by one symbol, a delay circuit for delaying a one-symbol differential detection signal by two symbol periods, a two-symbol differential detector for performing phase comparison between the current input signal and an input signal preceding by two symbol periods, a four-symbol differential detector for performing phase comparison between the current input signal and an input signal preceding by four symbol periods, and two error correction circuits. By making use of the four-symbol differential detection signal, error correction of the two-symbol differential detection signal is performed by the error correction circuit while error correction of the one-symbol differential detection signal is performed by using the corrected two-symbol differential detection signal. By diminishing the error of the two-symbol differential detection signal, the error correcting capability for the one-symbol differential detection signal is enhanced with bit error rate characteristic being improved.

摘要翻译： 具有用于在执行纠错时检测差分相移信号的误差校正功能的差分检测器包括一个符号差分检测器，用于执行当前输入信号和一个符号之前的信号之间的相位比较;延迟电路，用于延迟一个 符号差分检测信​​号，两个符号周期的两符号差分检测器，用于执行当前输入信号和两个符号周期之前的输入信号之间的相位比较的双符号差分检测器，用于执行当前输入信号 和四个符号周期之前的输入信号，以及两个误差校正电路。 通过利用四符号差分检测信​​号，通过纠错电路执行两符号差分检测信​​号的纠错，同时通过使用校正的两符号差分进行一符号差分检测信​​号的纠错 检测信号。 通过减小二符号差分检测信​​号的误差，增加了单码元差分检测信​​号的误码校正能力，改善了误码率特性。

公开(公告)号：US06456677B1

公开(公告)日：2002-09-24

申请号：US09709650

申请日：2000-11-13

申请人： Katsuhiko Hiramatsu ,  Mitsuru Uesugi ,  Hiroaki Sudo

发明人： Katsuhiko Hiramatsu ,  Mitsuru Uesugi ,  Hiroaki Sudo

IPC分类号： H04L700

CPC分类号： H04L7/0054 ,  H04L7/0334 ,  H04L7/0337 ,  H04L7/041

摘要： The synchronizing apparatus includes a block for detecting a code from an input signal, a block for detecting from the code the variable points of the code at several times as high as the symbol rate, a block for calculating a histogram of the detected variables of the code to time, and a block for deciding that the phase number at which the calculated histogram takes the maximum value is a symbol synchronization point. This synchronizing apparatus detects the zero-cross points of an intermediate frequency band signal at N times as high as the symbol rate. It also calculates a histogram of detected time (0 to N−1). The time (0 to N−1) at which the histogram is the maximum within a predetermined detected time is selected as a symbol clock, and thereby symbol synchronization is established.

摘要翻译： 同步装置包括用于从输入信号中检测代码的块，用于从代码中检测代码的可变点数为符号速率的几倍的块，用于计算检测到的变量的直方图的块 代码到时间，以及用于确定计算的直方图获取最大值的相位数的块是符号同步点。 该同步装置检测中间频带信号的零交叉点的N倍于符号率。 它还计算检测时间的直方图（0到N-1）。 选择在预定检测时间内直方图为最大值的时间（0到N-1）作为符号时钟，从而建立符号同步。

公开(公告)号：US07403471B2

公开(公告)日：2008-07-22

申请号：US10773396

申请日：2004-02-09

申请人： Hiroaki Sudo ,  Mitsuru Uesugi

发明人： Hiroaki Sudo ,  Mitsuru Uesugi

IPC分类号： H04J11/00

CPC分类号： H04L27/2605

摘要： A method and apparatus for setting a guard interval in an OFDM communication. The method includes attaching a part of a first valid symbol to the first valid symbol as a guard interval and attaching a part of a second valid symbol requiring higher channel quality than the first valid symbol, to the second valid symbol as a guard interval, and providing the guard interval of the second valid symbol at a length greater than the guard interval of the first valid symbol.

摘要翻译： 一种在OFDM通信中设置保护间隔的方法和装置。 该方法包括将第一有效符号的一部分附加到第一有效符号作为保护间隔，并将需要比第一有效符号更高的信道质量的第二有效符号的一部分附加到作为保护间隔的第二有效符号，以及 以大于第一有效符号的保护间隔的长度提供第二有效符号的保护间隔。

公开(公告)号：US06714511B1

公开(公告)日：2004-03-30

申请号：US09464388

申请日：1999-12-16

申请人： Hiroaki Sudo ,  Mitsuru Uesugi

发明人： Hiroaki Sudo ,  Mitsuru Uesugi

IPC分类号： H04J1100

CPC分类号： H04L27/2605

摘要： The subtractor of the reception system calculates the channel quality using an optimal guard interval length detection signal inserted into one carrier by the transmission system, then the optimal guard interval length detector calculates the minimum guard interval length necessary to eliminate delayed signals using this calculated channel quality, inserts the control signal indicating this guard interval length into one carrier and the reception system sets the guard interval length using this control signal.

摘要翻译： 接收系统的减法器使用由传输系统插入到一个载波中的最佳保护间隔长度检测信号来计算信道质量，则最佳保护间隔长度检测器使用该计算的信道质量来计算消除延迟信号所需的最小保护间隔长度 将表示该保护间隔长度的控制信号插入一个载波，接收系统使用该控制信号设定保护间隔长度。

公开(公告)号：US20120051455A1

公开(公告)日：2012-03-01

申请号：US13266424

申请日：2010-04-28

申请人： Hiroaki Sudo

发明人： Hiroaki Sudo

IPC分类号： H04L27/04

CPC分类号： H04L1/0015 ,  H04L1/0002 ,  H04L1/0026 ,  H04L1/0028 ,  H04L5/0023 ,  H04L5/0057

摘要： A transmission device capable of reducing the information amount of channel quality indicators (CQIs) without deteriorating throughput. In the device, an upper bit transmission control unit (104) sets the transmission intervals between upper bits of the CQIs inputted from an S/P conversion unit (103) to be longer than the transmission intervals between lower bits of the CQIs, and a lower bit transmission control unit (105) sets the transmission intervals between the lower bits of the CQIs inputted from the S/P conversion unit (103). Then, a transmission unit (107) transmits the CQI on the basis of the transmission intervals respectively set by the upper bit transmission control unit (104) and the lower bit transmission control unit (105).

摘要翻译： 一种能够在不降低吞吐量的情况下减少信道质量指示符（CQI）的信息量的发送装置。 在设备中，高位传输控制单元（104）将从S / P转换单元（103）输入的CQI的高位之间的传输间隔设置为比CQI的低位之间的传输间隔长， 低位传输控制单元（105）设置从S / P转换单元（103）输入的CQI的低位之间的传输间隔。 然后，发送部（107）根据由高位发送控制部（104）和下位发送控制部（105）分别设定的发送间隔发送CQI。

公开(公告)号：US08051198B2

公开(公告)日：2011-11-01

申请号：US10542657

申请日：2004-11-24

申请人： Hiroaki Sudo

发明人： Hiroaki Sudo

IPC分类号： G06F15/16

CPC分类号： H04W8/085 ,  H04W36/0011 ,  H04W80/04 ,  H04W88/005 ,  H04W88/08

摘要： A communication system enabling significant reduction in delay in handover between MAPs without increasing the number of MAPs to install. In the communication system, MAP(101) issues a Router Advertisement to AR(111) to AR(118). Particularly, MAP(101) assigns a plurality of Router Advertisements of a source of care-of address (RCOA) to register with HA to AR(118) of a cell on either side of a boundary of areas for each MAP. MN(107) receives a Router Advertisement transmitted from AR that is a communicating party among AR(119) to AR(126), and using the Router Advertisement, generates care-of addresses, RCOA and LCOA. AR(111) to AR(118) transmit the Router Advertisement RA generated by MAP(101) to MN in communication. Further, AR(111) to AR(118) transmit the care-or-addresses, RCOA and LCOA, issued from MN(107) to MAP(101).

摘要翻译： 一种通信系统，其能够显着地减少MAP之间切换的延迟，而不增加要安装的MAP的数量。 在通信系统中，MAP（101）向AR（111）向AR（118）发布路由器通告。 特别地，MAP（101）分配转交地址（RCOA）的多个路由器通告，以向每个MAP的区域边界的任一侧的单元的HA向AR（118）注册。 MN（107）接收从AR（119）到AR（126）中的作为通信方的AR发送的路由器通告，并使用路由器通告生成转交地址，RCOA和LCOA。 AR（111）到AR（118）将通过MAP（101）生成的路由器通告RA传送到MN进行通信。 此外，AR（111）到AR（118）向MN（107）发送从MN（107）发送到MAP（101）的认证或地址RCOA和LCOA。

公开(公告)号：US07826871B2

公开(公告)日：2010-11-02

申请号：US11814658

申请日：2006-01-24

申请人： Hiroaki Sudo

发明人： Hiroaki Sudo

IPC分类号： H04M1/00

CPC分类号： H04L1/1812 ,  H04B7/061 ,  H04B7/0632 ,  H04B7/0691 ,  H04B7/0697 ,  H04L1/0023 ,  H04L1/0026 ,  H04L1/06 ,  H04L1/1893

摘要： There is provided a transmission device capable of preventing increase of retransmission information or encoding redundant bit and improving a throughput in a MIMO communication method. In this device, an encoding unit (130) subjects data transmitted from a first transmission antenna (110) and a second transmission antenna (120) each formed by a plurality of antennas, to encoding processing all at once. Modulation units (113, 123) modulate the data encoded by the encoding unit (130) for each of the first and the second transmission antennas (110, 120). Transmission units (115, 125) process the modulated data so that it can be transmitted from the corresponding first and the second antennas (110, 120). A transmission control unit (160) performs transmission control of the data transmitted from the respective antennas (110, 120). When retransmitting data, the transmission control unit (160) retransmits the data transmitted from a transmission antenna having a smaller number of antennas than the first and the second antennas (110, 120).

摘要翻译： 提供了一种能够防止重传信息的增加或编码冗余比特并且提高MIMO通信方法中的吞吐量的传输装置。 在该装置中，编码单元（130）对由多个天线构成的第一发送天线（110）和第二发送天线（120）发送的数据进行一次全部的编码处理。 调制单元（113,123）对第一和第二发送天线（110,120）中的每一个调制由编码单元（130）编码的数据。 传输单元（115,125）处理调制数据，使得其可以从对应的第一和第二天线（110,120）传输。 发送控制单元（160）对从各个天线（110,120）发送的数据进行发送控制。 当重传数据时，发送控制单元（160）重发从具有比第一和第二天线（110,120）小的天线数的发​​送天线发送的数据。

公开(公告)号：US07764711B2

公开(公告)日：2010-07-27

申请号：US11767124

申请日：2007-06-22

申请人： Hiroaki Sudo

发明人： Hiroaki Sudo

IPC分类号： H04J1/00

CPC分类号： H04L1/0066 ,  H04B1/707 ,  H04J13/00 ,  H04J14/005 ,  H04L1/18

摘要： A control section (110) recognizes the type of data included in a transmission signal and outputs a control signal (C1) to an S/P conversion section (101) and a spreading control section (107). The S/P conversion section (101) apportions a specific type of data output from the control section (110) to different transmission systems. Spreading sections (102, 103) carry out spreading processing on the specific type of data output from the S/P conversion section (101) with different spreading codes assigned thereto under the control of the spreading control section (107). The data output from the spreading sections (102, 103) is transmitted by radio through addition sections (104-1, 104-2), transmission sections (105-1, 105-2) and antennas (106-1, 106-2). In this way, it is possible to improve the reception performance on the receiving side for specific data while maintaining the transmission efficiency of an MIMO communication system.

摘要翻译： 控制部（110）识别包含在发送信号中的数据的种类，并将控制信号（C1）输出到S / P转换部（101）和扩展控制部（107）。 S / P转换部分（101）将从控制部分（110）输出的特定类型的数据分配给不同的传输系统。 在扩展控制部分（107）的控制下，扩展部分（102,103）对由S / P转换部分（101）输出的特定类型的数据进行扩展处理，具有不同的分配给它的扩展码。 通过加法部（104-1,104-2），发送部（105-1,105-2）和天线（106-1,106-2）发送来自扩频部（102,103）的数据输出 ）。 以这种方式，可以在保持MIMO通信系统的传输效率的同时，提高接收侧的特定数据的接收性能。