公开(公告)号：US20100195707A1

公开(公告)日：2010-08-05

申请号：US11997710

申请日：2005-08-04

申请人： Jinsong Duan ,  Mitsuru Uesugi ,  Keisuke Ebiko ,  Keiji Takakusaki ,  Atsushi Sumasu

发明人： Jinsong Duan ,  Mitsuru Uesugi ,  Keisuke Ebiko ,  Keiji Takakusaki ,  Atsushi Sumasu

IPC分类号： H04B17/00 ,  H04L1/02

CPC分类号： H04L1/0026 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0029 ,  H04L1/003 ,  H04L5/0007 ,  H04L5/0046 ,  H04L5/006 ,  H04L5/0091 ,  H04L25/022

摘要： A mobile terminal device for performing multi-carrier communication with a base station device can improve communication quality while reducing the data amount without lowering accuracy of feedback information. In the mobile station device (100), a reception level measuring unit (135) measuring SINR as a reception level for each chunk formed by a plurality of sub-carriers according to a known signal; a control information transmission control unit (160) transmits feedback information (CQI information) based on the communication quality of each chunk to a base station device (200); a relative value calculation unit (150) calculates a relative value of MCS corresponding to the reception level between adjacent chunks from the reception level of each chunk; and a CQI information generation unit (155) generates feedback information (CQI information) from an absolute value of MCS corresponding to the reception level of the reference chunk and a relative value of MCS corresponding to the reception level between the adjacent chunks.

摘要翻译： 用于与基站设备进行多载波通信的移动终端设备可以在降低数据量的同时提高通信质量，而不降低反馈信息的准确性。 在所述移动台装置（100）中，根据已知信号，将由SINR构成的每个块的接收电平测量SINR的接收电平测量单元（135） 控制信息发送控制部（160）将基于各块的通信质量的反馈信息（CQI信息）发送到基站装置（200）; 相对值计算单元从每个块的接收电平计算与相邻块之间的接收电平相对应的MCS的相对值; CQI信息生成部（155）根据与基准块的接收电平对应的MCS的绝对值和与相邻的块之间的接收电平相对应的MCS的相对值生成反馈信息（CQI信息）。

公开(公告)号：US20090086834A1

公开(公告)日：2009-04-02

申请号：US11917745

申请日：2006-06-21

申请人： Yuta Seki ,  Mitsuru Uesugi ,  Eiji Ota

发明人： Yuta Seki ,  Mitsuru Uesugi ,  Eiji Ota

IPC分类号： H04L27/28

CPC分类号： H04L27/2623

摘要： To narrow the dynamic range of multicarrier signals and prevent both the increment of cost and the degradation of power efficiency. A modulating part (101) modulates transport data. An S/P converting part (102) performs an S/P conversion of a modulated symbol and outputs the modulated symbols, the number of which is the same as the number of all subcarriers, to an IFFT part (103) in parallel. The IFFT part (103) assigns the modulated symbols to the subcarriers, the frequencies of which are orthogonal to each other, to perform an inverse fast Fourier transform. A P/S converting part (104) performs a P/S conversion of the signals of time domain. When the instantaneous amplitude level of an OFDM signal is lower than a predetermined threshold value, a pit clip part (105) replaces this amplitude level by the predetermined threshold value. In other words, when the instantaneous power of the OFDM signal is close to zero, the pit clip part (105) converts a power value to a value that is greater than the actual power value.

摘要翻译： 缩小多载波信号的动态范围，防止成本增加和功率效率的退化。 调制部（101）调制传输数据。 S / P转换部分（102）执行调制符号的S / P转换，并且将其数量与所有子载波数相同的调制符号并行地输出到IFFT部分（103）。 IFFT部分（103）将调制符号分配给彼此正交的频率的子载波，以执行快速傅立叶逆变换。 P / S转换部（104）进行时域信号的P / S转换。 当OFDM信号的瞬时幅度电平低于预定阈值时，凹坑夹部分（105）将该幅度电平取代预定阈值。 换句话说，当OFDM信号的瞬时功率接近零时，凹坑夹部分（105）将功率值转换成大于实际功率值的值。

公开(公告)号：US20080279305A1

公开(公告)日：2008-11-13

申请号：US12173632

申请日：2008-07-15

申请人： Atsushi Matsumoto ,  Mitsuru Uesugi ,  Kenichi Miyoshi ,  Toshiyuki Uehara

发明人： Atsushi Matsumoto ,  Mitsuru Uesugi ,  Kenichi Miyoshi ,  Toshiyuki Uehara

IPC分类号： H04L27/00

CPC分类号： H04L1/1845 ,  H04B1/707 ,  H04L1/0003 ,  H04L1/004 ,  H04L1/0056 ,  H04L1/1893 ,  H04L27/3488 ,  H04L2001/0098

摘要： P/S conversion section 302 performs parallel/serial conversion of data sequences #1 through #4 input in parallel, in accordance with control by assignment control section 303, so that data to a higher-priority communication terminal is assigned to an upper bit in one symbol; M-ary modulation section 304 performs M-ary modulation on the data that has been subject to parallel/serial conversion; S/P conversion section 305 converts a symbol that has been subject to M-ary modulation to parallel form; multipliers 306-1 through 306-4 execute spreading processing on the symbols output in parallel; multiplexing section 309 multiplexes the symbol that has been subject to spreading processing with an assignment notification signal that has been subject to spreading processing; and radio transmitting section 310 transmits the multiplex signal.

摘要翻译： P / S转换部分302根据分配控制部分303的控制对并行输入的数据序列＃1至＃4进行并行/串行转换，使得到较高优先级的通信终端的数据被分配给 一个符号 M元调制部304对已经进行并行/串行转换的数据执行M进制调制; S / P转换部分305将已经被M进制调制的符号转换成并行形式; 乘法器306-1至306-4对并行输出的符号执行扩展处理; 多路复用部分309将已经进行扩展处理的符号与已经进行扩展处理的分配通知信号进行复用; 无线发送部310发送多路复用信号。

公开(公告)号：US07292862B2

公开(公告)日：2007-11-06

申请号：US09958956

申请日：2001-02-15

申请人： Atsushi Sumasu ,  Osamu Kato ,  Mitsuru Uesugi ,  Yoshiko Saito ,  Toyoki Ue ,  Junichi Aizawa ,  Keiichi Kitagawa ,  Toshiyuki Uehara ,  Guizeng Shi

发明人： Atsushi Sumasu ,  Osamu Kato ,  Mitsuru Uesugi ,  Yoshiko Saito ,  Toyoki Ue ,  Junichi Aizawa ,  Keiichi Kitagawa ,  Toshiyuki Uehara ,  Guizeng Shi

IPC分类号： H04Q7/20

CPC分类号： H04L5/026 ,  H04J3/1682

摘要： An assignment section 101 determines communication resource assignment to communication terminals based on a transmission rate at which communication is possible for each subcarrier of each communication terminal, and instructs a buffer section 102 to output forward transmission data. In addition, the assignment section 101 instructs a frame creation section 103 to perform forward transmission data symbolization, and also outputs a signal indicating communication resource assignment to each communication terminal. The buffer section 102 holds forward transmission data, and outputs forward transmission data to the frame creation section 103 in accordance with instructions from the assignment section 101. The frame creation section 103 symbolizes a resource assignment signal and transmission data to create a frame, which it outputs to a spreading section 104.

摘要翻译： 分配单元101基于每个通信终端的每个子载波进行通信的传输速率来确定对通信终端的通信资源分配，并且指示缓冲区域102输出正向发送数据。 此外，分配部101指示帧创建部103进行正向发送数据符号化，并且还向每个通信终端输出指示通信资源分配的信号。 缓冲器部分102保存正向传输数据，并且根据来自分配部分101的指令将正向传输数据输出到帧创建部分103。 帧创建部103对资源分配信号和发送数据进行符号化，生成帧，并向扩展部104输出。

公开(公告)号：US07251272B2

公开(公告)日：2007-07-31

申请号：US09933038

申请日：2001-08-21

申请人： Sadaki Futagi ,  Mitsuru Uesugi ,  Tadashi Matsumoto

发明人： Sadaki Futagi ,  Mitsuru Uesugi ,  Tadashi Matsumoto

IPC分类号： H03H7/30

CPC分类号： H04L25/0206 ,  H04B1/1081 ,  H04L25/03343 ,  H04W52/242 ,  H04W52/248

摘要： Noise generating section 106 generates noise data of a white Gaussian noise, and noise adding section 107 adds received data and the noise data. Channel estimating section 108 performs channel estimation using the added data output from noise adding section 107. At this point, when a level of a preceding signal is equal to or less than that of the noise data, channel estimating section 108 is not capable of detecting the preceding signal. Accordingly, in the case where a received level of a preceding signal is extremely lower than that of a delayed signal and a noise level is further lower than the received level of the preceding signal, it is possible to perform pre-equalization using the delayed signal as a desired signal, whereby it is possible to maintain the reception characteristic of a communication partner.

摘要翻译： 噪声生成部106生成白高斯噪声的噪声数据，噪声添加部107将接收到的数据和噪声数据相加。 信道估计部108使用从噪声添加部107输出的相加数据进行信道估计。 此时，当前一信号的电平等于或小于噪声数据的电平时，信道估计部分108不能检测前一信号。 因此，在前一信号的接收电平比延迟信号的接收电平低得多并且噪声电平进一步低于先前信号的接收电平的情况下，可以使用延迟信号进行预均衡 作为期望的信号，由此可以保持通信伙伴的接收特性。

公开(公告)号：US07133642B2

公开(公告)日：2006-11-07

申请号：US09913608

申请日：2000-12-15

申请人： Mitsuru Uesugi

发明人： Mitsuru Uesugi

IPC分类号： H04B1/10 ,  H04B15/00

CPC分类号： H04L1/06 ,  H04B7/0608 ,  H04B7/08 ,  H04B7/0854

摘要： A channel estimation section 112 estimates the states of channels used for pieces of mobile station apparatus (A) and (B), using signals demodulated by radio processing sections 110, 111. A best SIR calculation section 118 calculates coefficients to be used for signal transformation by inverse matrix calculation, using the above channel estimation values by the above channel estimation section 112. A signal transformation section 119 performs linear transformation of transmission signals to the above pieces of mobile station apparatus, using the above coefficients from the above best SIR calculation section 118. Radio processing sections 120, 121 modulates each transmission signal after the above linear transformation for transmission through antennas 108, 109, respectively.

摘要翻译： 信道估计部分112使用由无线电处理部分110,111解调的信号来估计用于移动台装置（A）和（B）的信道的状态。 最佳SIR计算部分118使用上述信道估计部分112的上述信道估计值来计算通过逆矩阵计算用于信号变换的系数。 信号变换部119使用上述最佳SIR计算部118的上述系数，对上述移动台装置进行发送信号的线性变换。 无线电处理部分120,121分别在通过天线108,109进行上述线性变换之后对每个发送信号进行调制以进行发送。

公开(公告)号：US20060198342A1

公开(公告)日：2006-09-07

申请号：US10563248

申请日：2004-06-28

申请人： Mitsuru Uesugi

发明人： Mitsuru Uesugi

IPC分类号： H04B7/216

CPC分类号： H04J13/20 ,  H04J13/0044

摘要： ej(2nn/N) calculating section 101 generates a bth chip C(a,b) of an ath spreading code based on C(a,b)=ej(2nn/N) where e is a base of natural logarithm and N is a length of the spreading code (i.e. spreading code length). It is assumed in the above equation that n=a×b, a=0˜N−1, and b=0˜N−1. It is thereby possible to generate orthogonal spreading codes with arbitrary lengths.

摘要翻译： 计算部101根据C（a，b）= e（j）（2nn / N）生成运动扩展码的第b码片C（a，b） ）其中e是自然对数的基数，N是扩展码的长度（即扩展码长度）。 在上式中假设n = axb，a = 0〜N-1，b = 0〜N-1。 从而可以产生任意长度的正交扩展码。

公开(公告)号：US07062295B2

公开(公告)日：2006-06-13

申请号：US10488771

申请日：2003-06-13

申请人： Isamu Yoshii ,  Mitsuru Uesugi ,  Toshiyuki Uehara

发明人： Isamu Yoshii ,  Mitsuru Uesugi ,  Toshiyuki Uehara

IPC分类号： H04M1/00

CPC分类号： H04W72/1231 ,  H04B7/0452 ,  H04B7/0604 ,  H04B7/0628

摘要： A radio communication system and scheduling method where, when data are transmitted from a plurality of transmit antennas to respective different mobile station apparatuses, all the mobile station apparatuses precisely receive data addressed thereto. A scheduler (104) performs scheduling that determines a data transmit order, depending on the numbers of receive antennas of the respective mobile station apparatuses, and notifies a transmit antennas assignment signal generator (124) of which transmit antenna is assigned which mobile station apparatus's sub-stream as the scheduling result. A number of receive antennas notifying signal decoder (122) decodes the number of receive antennas notifying signals and notifies the number of the receive antennas of each mobile station apparatus to the scheduler (104). The transmit antennas assignment signal generator (124) generates the transmit antennas assignment signal indicating which transmit antenna is assigned which mobile station apparatus's sub-stream.

摘要翻译： 一种无线电通信系统和调度方法，其中，当从多个发送天线发送数据到各个不同的移动台装置时，所有移动台装置精确地接收寻址到其的数据。 调度器（104）根据各移动站装置的接收天线的数量，进行决定数据发送顺序的调度，并向发送天线的发送天线分配信号发生器（124）通知哪个移动站装置的子 -stream作为调度结果。 多个接收天线通知信号解码器（122）对通知信号的接收天线的数量进行解码，并将每个移动站装置的接收天线的数量通知给调度器（104）。 发射天线分配信号发生器（124）产生指示哪个发射天线被分配哪个移动台设备的子流的发射天线分配信号。

公开(公告)号：US06990627B2

公开(公告)日：2006-01-24

申请号：US10257359

申请日：2002-02-26

申请人： Mitsuru Uesugi ,  Kenichi Miyoshi

发明人： Mitsuru Uesugi ,  Kenichi Miyoshi

IPC分类号： H04L1/18 ,  H03M13/03 ,  H03L27/06

CPC分类号： H04L1/005 ,  H04L1/0041 ,  H04L1/0058 ,  H04L1/0061 ,  H04L1/007 ,  H04L1/0071 ,  H04L1/1635 ,  H04L1/1893 ,  H04L25/067 ,  H04L27/22 ,  H04L27/3405 ,  H04L27/38

摘要： A coding section 101 performs error detection coding of data for each predetermined error detection unit, and an M-ary modulation section 102 arranges data belonging to a plurality of error detection units in one transmission unit, and transmits that data. A first decoding section 114 decodes a received signal, and performs error detection on the decoding result for each error detection unit. A second demodulation section 115 modifies the likelihood of each bit based on the result of error detection in the first decoding section 114. By this means, it is possible to improve the error correction capability of a signal that has undergone M-ary modulation using high-precision likelihoods, and to improve transmission quality.

摘要翻译： 编码部分101对每个预定错误检测单元执行数据的错误检测编码，并且M元调制部分102将属于多个错误检测单元的数据排列在一个发送单元中，并发送该数据。 第一解码单元114对接收到的信号进行解码，对每个错误检测单元的解码结果执行错误检测。 第二解调单元115根据第一解码单元114的错误检测结果来修正各位的似然性。 通过这种方式，可以提高使用高精度可能性进行M进制调制的信号的纠错能力，并提高传输质​​量。

公开(公告)号：US06967991B1

公开(公告)日：2005-11-22

申请号：US09701535

申请日：2000-03-28

申请人： Hiroki Haga ,  Mitsuru Uesugi ,  Katsuhiko Hiramatsu

发明人： Hiroki Haga ,  Mitsuru Uesugi ,  Katsuhiko Hiramatsu

IPC分类号： H04J13/00 ,  H04B1/10 ,  H04B1/7107 ,  H04B1/707

CPC分类号： H04B1/71075 ,  H04B1/7115 ,  H04B1/712

摘要： A delay device 102 sends reception signals to a subtraction device 113 after delaying it by a predetermined time. Matched filters 103-1˜103-N perform despreading operation of the reception signals. RAKE-combining devices 104-1˜104-N perform RAKE-combining operation of the signals after the despreading operation. Discrimination devices 105-1˜105-N perform hard decision of the signals after the RAKE-combining operation. A decision value buffer 107 stores the signals after the hard decision. Likelihood calculation devices 106-1˜106-N calculate likelihood of all the symbols. A likelihood buffer 108 stores calculated likelihood. A controlling part 110 controls a switch 109. A ranking decision device 111 decides a ranking based on the likelihood. A re-spreading device 112 performs re-spreading operation of a symbol with the highest likelihood ranking. And a subtraction device 113 subtracts the re-spreading result from the delayed reception signals.

摘要翻译： 延迟装置102在将其延迟预定时间之后将接收信号发送到减法装置113。 匹配滤波器103-1〜103 -N执行接收信号的解扩操作。 RAKE组合设备104-1〜104 -N在解扩操作之后执行信号的RAKE组合操作。 识别装置105-1〜105 -N在RAKE组合操作之后执行信号的硬判决。 决策值缓冲器107存储硬判决之后的信号。 似然计算装置106-1〜106 -N计算所有符号的可能性。 似然缓冲器108存储计算的似然性。 控制部分110控制开关109。 排序决定装置111根据似然性判定排序。 重新扩展装置112执行具有最高似然等级的符号的重新扩展操作。 并且减法装置113从延迟的接收信号中减去再扩频结果。