公开(公告)号：US07372909B2

公开(公告)日：2008-05-13

申请号：US10489826

申请日：2003-04-15

Applicant: Kenichi Miyoshi

Inventor： Kenichi Miyoshi

IPC: H04K1/10 ,  H04L27/28

CPC classification number: H04L5/0053 ,  H04L27/2647

Abstract: By assigning a plurality of subcarriers 31 to a data channel 33 and assigning fewer subcarriers 32 than the plurality of subcarriers 31 to a control channel 34, and in addition locating the control channel 34 at the center frequency fc of a frequency band used to transmit the data channel 33, on the radio receiving apparatus side, the frequencies of a local signal by which the received signal is multiplied share the same value, thereby speeding up the switching between the control channel and the data channel.

Abstract translation: 通过将多个副载波31分配给数据信道33，并将多个子载波32分配给多个副载波31，并将其分配给控制信道34，此外，将控制信道34定位在用于发送的频带的中心频率fc 在无线电接收装置侧的数据信道33中，接收信号被乘以的本地信号的频率共享相同的值，从而加速控制信道与数据信道之间的切换。

公开(公告)号：US20080020716A1

公开(公告)日：2008-01-24

申请号：US11828986

申请日：2007-07-26

Applicant: Masayuki Hoshino ,  Kenichi Miyoshi

Inventor： Masayuki Hoshino ,  Kenichi Miyoshi

IPC: H04B1/38

CPC classification number: H04B7/0695 ,  H04B7/0604 ,  H04L1/0003 ,  H04L1/0009 ,  H04W16/28

Abstract: A directivity control section 103 performs weight control over a received signal using channel estimation and optimum weights, performs processing such as generation of the received signal and generates a plurality of weight-controlled transmission signals. A received signal demodulation section 104 extracts an SIR measurement result from the received signal. A scheduler section 105 decides which terminal should be assigned to a channel to be adaptively modulated from the SIR measurement result and at the same time decides the modulation multi-valued number and coding rate of the signal to the terminal. A transmission signal generation section 106 modulates a transmission signal such as a reference signal or packet data. A directivity switching instruction section 107 controls switching between directivities so as to maintain the same directivity after the reference signal is transmitted with a directivity until packet data is transmitted with a directivity. This makes it possible to receive packet data with high quality, improve efficiency of a radio frequency band and maximize communication path utilization efficiency.

Abstract translation: 指向性控制部分103使用信道估计和最佳权重对接收信号进行加权控制​​，执行诸如生成接收信号的处理，并产生多个加权控制传输信号。 接收信号解调部分104从接收信号中提取SIR测量结果。 调度器部分105根据SIR测量结果确定哪个终端应该被分配给要自适应调制的信道，并且同时将该信号的调制多值数量和编码率确定到终端。 发送信号生成部106调制诸如参考信号或分组数据的发送信号。 指向性切换指令部分107控制方向性之间的切换，以便在以指向性发送参考信号之后保持相同的方向性，直到分组数据以方向性发送。 这使得可以高质量地接收分组数据，提高无线电频带的效率并最大化通信路径利用效率。

公开(公告)号：US20070263736A1

公开(公告)日：2007-11-15

申请号：US11576039

申请日：2005-09-26

Applicant: Yasuaki Yuda ,  Tomohiro Imai ,  Kenichi Miyoshi

Inventor： Yasuaki Yuda ,  Tomohiro Imai ,  Kenichi Miyoshi

IPC: H04L27/28

CPC classification number: H04L27/2626 ,  H04B7/0615 ,  H04L27/2647

Abstract: A multicarrier communication apparatus and the like wherein the arithmetic amount required for calculating a reception weight by which a multicarrier signal is to be multiplied is suppressed, while the reception characteristic for the multicarrier signal is improved. In the apparatus, a subcarrier transmission weight generating part (513) generates a transmission weight of each subcarrier, based on channel information of each subcarrier received froma channel information generating part (511) and a reception weight of each subcarrier group received from a subcarrier group reception weight generating part (512). The subcarrier transmission weight generating part (513) inputs the generated transmission weights of the respective subcarriers to the corresponding ones of multipliers (522).

Abstract translation: 在多载波信号的接收特性提高的情况下，抑制用于计算要乘以多载波信号的接收权重所需的算术量的多载波通信装置等。 在该装置中，子载波发送权重生成部（513）根据从信道信息生成部（511）接收到的各副载波的信道信息和从副载波组接收到的各子载波组的接收权重，生成各副载波的发送权重 接收重量产生部分（512）。 子载波传输权重产生部分（513）将生成的各个子载波的传输权重输入到相应的乘法器（522）。

公开(公告)号：US20070224953A1

公开(公告)日：2007-09-27

申请号：US10599857

申请日：2005-03-31

Applicant: Yoichi Nakagawa ,  Hirokazu Kobayashi ,  Yutaka Murakami ,  Takaaki Kishigami ,  Kenichi Miyoshi

Inventor： Yoichi Nakagawa ,  Hirokazu Kobayashi ,  Yutaka Murakami ,  Takaaki Kishigami ,  Kenichi Miyoshi

IPC: H04B7/08

CPC classification number: H04B7/061 ,  H04B7/0802

Abstract: It is an object of the invention to provide a wireless communication system capable of decreasing the effect of radio interference on a different wireless station using the same frequency band and preventing information from leaking to a different wireless station while ensuring the transmit quality of a wireless channel used between specific wireless stations according to a simple configuration in a quasi-static fading environment of wireless communications. A transmit station 101 selects one optimum antenna from among antennas based on quality information of a transmission path 104 and transmits a packet to a receive station 102 from the selected antenna. The receive station 102 receives the packet from the transmit station 101 at one antenna selected from among antennas and switches the currently selected antenna to a different antenna. The receive station 102 transmits a response packet to the received packet to the transmit station 101 from the antenna to which the current antenna is switched. The transmit station 101 receives the response packet at each of the antennas, selects the antenna with the best receive quality as a packet transmit antenna, and transmits a packet to the receive station 102 from the selected antenna. Then, the processing is repeated.

Abstract translation: 本发明的一个目的是提供一种无线通信系统，能够减少无线电干扰对使用相同频带的不同无线站的影响，并且防止信息泄漏到不同的无线站，同时确保无线信道的传输质量 根据无线通信的准静态衰落环境中的简单配置在特定无线站之间使用。 发送站101基于传输路径104的质量信息从天线中选择一个最佳天线，并从所选择的天线向接收站102发送分组。 接收站102从天线中选择的一个天线从发射台101接收分组，并将当前选择的天线切换到不同的天线。 接收站102从当前天线被切换到的天线向接收到的分组发送响应分组给发射台101。 发送台101在每个天线接收响应分组，选择具有最佳接收质量的天线作为分组发送天线，并从所选择的天线向接收站102发送分组。 然后，重复处理。

公开(公告)号：US20070223616A1

公开(公告)日：2007-09-27

申请号：US11579956

申请日：2005-04-26

Applicant: Kenichi Miyoshi ,  Akihiko Nishio

Inventor： Kenichi Miyoshi ,  Akihiko Nishio

IPC: H04B7/02 ,  H04L27/18

CPC classification number: H04B7/0888 ,  H04B7/0608

Abstract: A radio communication apparatus that can more precisely grasp, in a case of using a plurality of antenna elements to receive radio signals, the reception qualities of the respective antenna elements to improve the error rate of received signals. In the apparatus, a lower-order bit likelihood extracting part (107) extracts, based on a multi-level modulation scheme of data (ch) notified by a modulation scheme determining part (106), the likelihood of LSB only or the likelihood of LSB to two bits from all bit likelihood received from a bit likelihood calculating part (104), and then inputs the extracted likelihood to a distribution calculating part (108), which is then calculates the distribution of the likelihood for each antenna element.

Abstract translation: 在使用多个天线元件接收无线电信号的情况下，可以更精确地掌握各个天线元件的接收质量以提高接收信号的错误率的无线电通信装置。 在该设备中，低阶比特率提取部分（107）根据由调制方式确定部分（106）通知的数据（ch）的多级调制方案，提取LSB的似然性或可能性 从比特似然计算部分（104）接收的所有比特似然比中的LSB到两比特，然后将所提取的似然值输入到分布计算部分（108），然后，分布计算部分（108）计算每个天线元素的似然度分布。

公开(公告)号：US20070217528A1

公开(公告)日：2007-09-20

申请号：US11573072

申请日：2005-07-04

Applicant: Kenichi Miyoshi ,  Akihiko Nishio

Inventor： Kenichi Miyoshi ,  Akihiko Nishio

IPC: H04K1/10 ,  H04L25/03

CPC classification number: H04W52/223 ,  H04L27/2614 ,  H04L27/2636 ,  H04L27/2647 ,  H04L27/368 ,  H04W52/42

Abstract: A radio transmission device capable of improving the reception error rate characteristics of a receiver. In this device, an FFT (Fast Fourier Transform) unit (102) subjects a transmission signal to an FFT operation, in which a signal in a time domain is converted into a signal in a frequency domain. A control unit (103) controls the transmission power of the FFT-operated transmission signal in the frequency domain. An IFFT (Inverse Fast Fourier Transform) unit (104) subjects the transmission signal having its transmission power controlled, to an IFFT operation, in which an inverse conversion is made into a signal in the time domain. A transmission RF unit (106) transmits the IFFT-operated transmission signal on a single carrier.

Abstract translation: 一种能够提高接收机的接收错误率特性的无线发送装置。 在该装置中，FFT（快速傅里叶变换）单元（102）对传输信号进行FFT操作，其中时域中的信号被转换成频域中的信号。 控制单元（103）控制频域中的FFT操作的发送信号的发送功率。 IFFT（逆快速傅立叶变换）单元（104）将其发送功率受控的发送信号进行IFFT操作，其中在时域中进行逆变换。 发送RF单元（106）在单个载波上发送IFFT操作的发送信号。

公开(公告)号：US20070121737A1

公开(公告)日：2007-05-31

申请号：US10573687

申请日：2004-09-27

Applicant: Isamu Yoshii ,  Kenichi Miyoshi ,  Jun Cheng ,  Akihiko Nishio ,  Masaru Fukuoka

Inventor： Isamu Yoshii ,  Kenichi Miyoshi ,  Jun Cheng ,  Akihiko Nishio ,  Masaru Fukuoka

IPC: H04K1/10

CPC classification number: H04L27/2618 ,  H04L1/0003 ,  H04L1/0009

Abstract: A transmission apparatus capable of improving overall throughput of a system by suppressing peaks using some frequencies in a communication band. In this apparatus, modulation section (102) adaptively modulates transmission data. Combination section (103) combines the waveform of the transmission data and an inverse replica and suppresses peaks equal to or higher than a threshold. When there are peaks equal to or higher than a threshold, inverse replica generation section (112) extracts the waveform of a peak equal to or higher than the threshold and generates an inverse replica which is the waveform having the inverse characteristic of the extracted waveform. Sub-band selection section (114) selects frequencies of subcarriers for which MCS having low transmission efficiency is selected and outputs the inverse replica within the range of the selected frequency to combination section (103).

Abstract translation: 一种传输装置，其能够通过抑制通信频带中的一些频率的峰值来提高系统的整体吞吐量。 在该装置中，调制部（102）自适应地调制发送数据。 组合部（103）组合发送数据的波形和逆副本，并抑制等于或高于阈值的峰值。 当存在等于或高于阈值的峰值时，逆副本生成部分（112）提取等于或高于阈值的峰值的波形，并产生具有所提取波形的逆特性的波形的逆副本。 子带选择部（114）选择选择了低传输效率的MCS的子载波的频率，并将所选频率的范围内的逆副本输出到组合部（103）。

公开(公告)号：US07200177B2

公开(公告)日：2007-04-03

申请号：US10380222

申请日：2002-07-03

Applicant: Kenichi Miyoshi

Inventor： Kenichi Miyoshi

IPC: H04K1/10 ,  H04L27/28

CPC classification number: H04W52/346 ,  H04B1/692 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0032 ,  H04L1/0034 ,  H04L27/2608 ,  H04W52/42

Abstract: A subcarrier transmission ON/OFF control system based on an MC-CDMA system capable of improving information transmission efficiency and reception performance while keeping the number of transmission bits constant. Furthermore, a subcarrier transmit power control system based on an MC-CDMA system or OFDM system capable of improving information transmission efficiency and reception performance. The former system based on the MC-CDMA system does not carry out transmission through subcarriers of low reception quality, with no transmit power assigned (transmission OFF), assigns the corresponding transmit power to subcarriers with transmit power assigned (transmission ON) and carries out transmission (subcarrier transmission ON/OFF control) The latter system based on the MC-CDMA system or OFDM system carries out transmission according to a reception level of each subcarrier on the receiving side, with greater transmit power assigned to subcarriers with higher reception levels and smaller transmit power assigned to subcarriers with lower reception levels (subcarrier reverse transmit power control).

Abstract translation: 一种基于能够在保持传输比特数恒定的同时提高信息传输效率和接收性能的MC-CDMA系统的副载波传输ON / OFF控制系统。 此外，基于能够提高信息传输效率和接收性能的MC-CDMA系统或OFDM系统的子载波发射功率控制系统。 基于MC-CDMA系统的前一系统不进行传输，通过低接收质量的子载波（没有传输功率分配（传输关闭）），将相应的发射功率分配给具有发射功率（传输ON）的子载波，并执行 传输（子载波传输ON / OFF控制）基于MC-CDMA系统或OFDM系统的后一种系统根据接收侧的每个子载波的接收电平进行传输，分配给具有较高接收电平的副载波的较大发射功率，以及 分配给具有较低接收电平的子载波（副载波反向发射功率控制）的较小发射功率。

公开(公告)号：US07003050B2

公开(公告)日：2006-02-21

申请号：US10182569

申请日：2001-12-27

Applicant: Atsushi Matsumoto ,  Mitsuru Uesugi ,  Kenichi Miyoshi ,  Toshiyuki Uehara

Inventor： Atsushi Matsumoto ,  Mitsuru Uesugi ,  Kenichi Miyoshi ,  Toshiyuki Uehara

IPC: H04L27/04 ,  H04L27/12 ,  H04L27/20

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

Abstract: 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.

Abstract translation: 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：US20060023628A1

公开(公告)日：2006-02-02

申请号：US10535425

申请日：2004-08-13

Applicant: Toshiyuki Uehara ,  Katsuyoshi Naka ,  Akihiko Nishio ,  Kenichi Miyoshi

Inventor： Toshiyuki Uehara ,  Katsuyoshi Naka ,  Akihiko Nishio ,  Kenichi Miyoshi

IPC: H04L12/26

CPC classification number: H04B7/26

Abstract: A radio communication method is provided that enables the TFC pointer of a communication terminal apparatus to be made to match the TFC pointer of a radio base station apparatus. A mobile station changes its TFC pointer in line with a determined TFC and also transmits a TFCI at point in time t3. The base station checks the TFCI and updates its own TFC pointer so as to match with the TFC indicated by the TFCI. The base station determines a new TFC pointer, generates an up/down/keep signal by comparing the new TFC pointer with the updated TFC pointer, and transmits this signal at point in time t5. The mobile station updates the TFC pointer it is holding based on the up/down/keep signal received at point in time t6. As a result, the TFC pointers of both stations can be made to match even if the mobile station receives an up/down/keep signal erroneously at point in time t2.

Abstract translation: 提供一种无线电通信方法，其使通信终端装置的TFC指针能够与无线基站装置的TFC指针相匹配。 移动台根据确定的TFC改变其TFC指针，并且还在时间点t 3发送TFCI。 基站检查TFCI并更新自己的TFC指针，以便与TFCI指示的TFC匹配。 基站确定新的TFC指针，通过将新的TFC指针与更新的TFC指针进行比较来产生上/下/保持信号，并在时间点t 5发送该信号。 移动台基于在时刻t 6接收到的上/下/保持信号来更新其保持的TFC指针。 结果，即使移动站在时间点t 2中错误地接收到上/下/保持信号，也可以使两个站的TFC指针相匹配。