公开(公告)号：US07969957B2

公开(公告)日：2011-06-28

申请号：US11722144

申请日：2005-12-08

申请人： Katsuyoshi Naka ,  Daichi Imamura ,  Tomohiro Imai ,  Junya Yamazaki

发明人： Katsuyoshi Naka ,  Daichi Imamura ,  Tomohiro Imai ,  Junya Yamazaki

IPC分类号： H04J1/00

CPC分类号： H04L5/006 ,  H04L1/0071 ,  H04L1/08 ,  H04L1/18 ,  H04L1/1812 ,  H04L1/1893 ,  H04L5/0007 ,  H04L5/0046

摘要： An interleave apparatus and an interleave method for preventing an increase in the number of retransmissions to improve the throughput. In a wireless communication apparatus having the interleave apparatus, a data holding part (1021) two-dimensionally arranges and holds bit sequences. A first index calculating part (1022) sequentially calculates first indexes to be used for reading, in a column direction, the bit sequences arranged in a row direction. A second index calculating part (1023) sequentially calculates second indexes to be used for reversing the order of the upper-order and lower-order bits to be read from the even-numbered columns when the bit sequences are read in accordance with the first indexes. A third index calculating part (1024) sequentially calculates third indexes to be used for reading the bit sequences from a different start position in accordance with the number of retransmissions. A reading part (1025) reads the bit sequences in the order that is in accordance with the third indexes. A mapping part (103) maps the read bit sequences to the respectively corresponding subcarriers.

摘要翻译： 一种交织装置和交织方法，用于防止重传次数的增加以提高吞吐量。 在具有交织装置的无线通信装置中，数据保持部（1021）二维排列并保持比特序列。 第一索引计算部（1022）依次计算用于沿列方向读取沿行方向排列的位序列的第一索引。 第二索引计算部分（1023）根据第一索引顺序地计算用于反转从偶数列读取的高阶和低位比特的顺序的第二索引 。 第三索引计算部分（1024）根据重发次数顺序地计算用于从不同起始位置读取比特序列的第三索引。 读取部分（1025）按照与第三索引相符的顺序读取比特序列。 映射部分（103）将读取的比特序列映射到分别对应的子载波。

公开(公告)号：US20090092118A1

公开(公告)日：2009-04-09

申请号：US11722144

申请日：2005-12-08

申请人： Katsuyoshi Naka ,  Daichi Imamura ,  Tomohiro Imai ,  Junya Yamazaki

发明人： Katsuyoshi Naka ,  Daichi Imamura ,  Tomohiro Imai ,  Junya Yamazaki

IPC分类号： H04J1/00

CPC分类号： H04L5/006 ,  H04L1/0071 ,  H04L1/08 ,  H04L1/18 ,  H04L1/1812 ,  H04L1/1893 ,  H04L5/0007 ,  H04L5/0046

摘要： An interleave apparatus and an interleave method for preventing an increase in the number of retransmissions to improve the throughput. In a wireless communication apparatus having the interleave apparatus, a data holding part (1021) two-dimensionally arranges and holds bit sequences. A first index calculating part (1022) sequentially calculates first indexes to be used for reading, in a column direction, the bit sequences arranged in a row direction. A second index calculating part (1023) sequentially calculates second indexes to be used for reversing the order of the upper-order and lower-order bits to be read from the even-numbered columns when the bit sequences are read in accordance with the first indexes. A third index calculating part (1024) sequentially calculates third indexes to be used for reading the bit sequences from a different start position in accordance with the number of retransmissions. A reading part (1025) reads the bit sequences in the order that is in accordance with the third indexes. A mapping part (103) maps the read bit sequences to the respectively corresponding subcarriers.

摘要翻译： 一种交织装置和交织方法，用于防止重传次数的增加以提高吞吐量。 在具有交织装置的无线通信装置中，数据保持部（1021）二维排列并保持比特序列。 第一索引计算部（1022）依次计算用于沿列方向读取沿行方向排列的位序列的第一索引。 第二索引计算部分（1023）根据第一索引顺序地计算用于反转从偶数列读取的高阶和低位比特的顺序的第二索引 。 第三索引计算部分（1024）根据重发次数顺序地计算用于从不同起始位置读取比特序列的第三索引。 读取部分（1025）按照与第三索引相符的顺序读取比特序列。 映射部分（103）将读取的比特序列映射到分别对应的子载波。

公开(公告)号：US20100284487A1

公开(公告)日：2010-11-11

申请号：US12812449

申请日：2009-01-14

申请人： Atsushi Sumasu ,  Isamu Yoshii ,  Tomohiro Imai ,  Daichi Imamura ,  Seigo Nakao

发明人： Atsushi Sumasu ,  Isamu Yoshii ,  Tomohiro Imai ,  Daichi Imamura ,  Seigo Nakao

IPC分类号： H04L27/00

CPC分类号： H04J11/0083 ,  H04B7/068

摘要： A wireless transmission method for improving the reception characteristic of a preamble. The wireless transmission method allows the patterns of subcarriers (transmitting antenna Tx1: 1, 2, 3, 5, 6, 7, 8, . . . , transmitting antenna Tx2: 4, 9, 10, 12, 13, 14, . . . ) in which preamble sequences are continuously arranged to be changed in a frequency direction. With this, the preamble sequences can be arranged at random subcarrier intervals and, when the autocorrelation values of the preamble sequences are obtained in a time domain, the peak value of the sidelobe becomes small, thereby making it possible to prevent a timing detection error.

摘要翻译： 一种用于改善前导码的接收特性的无线传输方法。 无线发送方法允许子载波的模式（发送天线Tx1：1,2,3,5,6,7,8 ...，发送天线Tx2：4,9,10,12,13,14，...，14。 ），其中前导序列被连续地布置成在频率方向上改变。 由此，能够以随机子载波间隔配置前导码序列，在时域中获得前导码序列的自相关值时，旁瓣的峰值变小，能够防止定时检测错误。

公开(公告)号：US20090028262A1

公开(公告)日：2009-01-29

申请号：US11573028

申请日：2005-07-29

申请人： Tomohiro Imai ,  Yasuaki Yuda ,  Daichi Imamura

发明人： Tomohiro Imai ,  Yasuaki Yuda ,  Daichi Imamura

IPC分类号： H04L1/02

CPC分类号： H04L9/0875 ,  H04L2209/34 ,  H04L2209/80 ,  H04W12/04

摘要： There are disclosed a radio communication device and others capable of generating in a short time a secret key common to a base station and a mobile station in a radio communication system using the MIMO technique and starting the encrypted communication at an early stage. In this device, in ST545, when a channel coincidence judgment unit (105) and a channel coincidence judgment processing unit (205) respectively judge that the channel matrix generated by the base station completely coincides with the channel matrix generated by the mobile station or they do not coincide completely but they can coincide finally by error correction of the secret key or the like, according to the judgment result indicated in the channel coincidence judgment signal generated in ST540-2, ST545 is followed by ST550. On the other hand, when the channel matrix generated by the base station does not coincide completely with the channel matrix generated by the mobile station and they do not coincide finally even after error correction of the secret key, ST510 is again executed after ST545.

摘要翻译： 公开了能够在短时间内在使用MIMO技术的无线通信系统中的基站和移动站共用的秘密密钥的早期阶段生成加密通信的无线通信装置等。 在该装置中，在ST545中，当信道一致判断部（105）和信道符合判定处理部（205）分别判定基站生成的信道矩阵与移动台生成的信道矩阵完全一致时， 不完全一致，但是最终可以通过秘密密钥等的纠错重合，根据在ST540-2中生成的信道重合判断信号中指示的判定结果，ST545后跟ST550。 另一方面，当由基站产生的信道矩阵与移动台产生的信道矩阵完全不一致时，即使在秘密密钥的纠错之后它们也不一致，在ST545之后再次执行ST510。

公开(公告)号：US20070286310A1

公开(公告)日：2007-12-13

申请号：US11722831

申请日：2005-12-26

申请人： Masaru Fukuoka ,  Sadaki Futagi ,  Daichi Imamura ,  Tomohiro Imai

发明人： Masaru Fukuoka ,  Sadaki Futagi ,  Daichi Imamura ,  Tomohiro Imai

IPC分类号： H03D1/00

CPC分类号： H04B7/02 ,  H04L1/0071 ,  H04L1/04 ,  H04L1/08 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0058 ,  H04L25/0204 ,  H04L25/0232

摘要： A wireless communication method of repetition system and the like for ensuring that when the same data symbols are combined, a diversity gain is achieved. In a step (ST 420), a data symbol placing part (105) decides destination places of respective replicated data symbols (S1-S4) such that the same data symbols are not placed at destination place numbers (7,8) of data symbols that exhibit poor channel estimation precisions. In a step (ST 430), the data symbol placing part (105) places, in accordance with the decision in the foregoing step (ST 420), the four data symbols (S1-S4), which are received from a repetition part (102), in one frame received from a channel estimation error predicting part (104).

摘要翻译： 一种用于确保当相同的数据符号被组合时的重复系统等的无线通信方法，实现了分集增益。 在步骤（ST 420）中，数据符号放置部分（105）确定各个复制数据符号（S SUB-S-4）的目的地位置，使得相同的数据 符号不会放置在显示较差信道估计精度的数据符号的目的地地点号码（7,8）上。 在步骤（ST430）中，数据符号放置部（105）根据上述步骤（ST420）中的判定，设置四个数据符号（S 1 -S

公开(公告)号：US20090305690A1

公开(公告)日：2009-12-10

申请号：US12281140

申请日：2007-02-28

申请人： Yasuaki Yuda ,  Masayuki Hoshino ,  Tomohiro Imai ,  Ryohei Kimura ,  Daichi Imamura

发明人： Yasuaki Yuda ,  Masayuki Hoshino ,  Tomohiro Imai ,  Ryohei Kimura ,  Daichi Imamura

IPC分类号： H04W28/16

CPC分类号： H04L1/08 ,  H04B7/0417 ,  H04B7/0632 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026

摘要： Disclosed is a radio transmission device capable of improving a transmission stream error resistance and preventing lowering of a throughput of a communication system. In this device, according to the feedback information from the radio reception device, a repetition control unit (110) decides ranking of each stream, sets a higher repletion rate for a higher stream. This is instructed to repetition units (103-1 to 103-N). According to the repletion rate decided by a repletion control unit (110), the repletion units (103-1 to 103-N) subjects the stream outputted from modulation units (102-1 to 102-N) to a repetition process, and outputs it to transmission RF units (104-1 to 104-N).

摘要翻译： 公开了能够提高传输流误差阻抗并防止通信系统的吞吐量降低的无线电传输装置。 在该装置中，根据来自无线接收装置的反馈信息，重复控制部（110）对每个流的排序进行判定，对较高的流设定较高的补充率。 这被指示给重复单元（103-1至103-N）。 根据由补充控制单元（110）决定的补偿率，补充单元（103-1至103-N）对从调制单元（102-1至102-N）输出的流进行重复处理，并输出 它发送到RF单元（104-1至104-N）。

公开(公告)号：US07729443B2

公开(公告)日：2010-06-01

申请号：US11722831

申请日：2005-12-26

申请人： Masaru Fukuoka ,  Sadaki Futagi ,  Daichi Imamura ,  Tomohiro Imai

发明人： Masaru Fukuoka ,  Sadaki Futagi ,  Daichi Imamura ,  Tomohiro Imai

IPC分类号： H04L27/00 ,  H04L23/00

CPC分类号： H04B7/02 ,  H04L1/0071 ,  H04L1/04 ,  H04L1/08 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0058 ,  H04L25/0204 ,  H04L25/0232

摘要： A wireless communication method of repetition system and the like for ensuring that when the same data symbols are combined, a diversity gain is achieved. In a step (ST 420), a data symbol placing part (105) decides destination places of respective replicated data symbols (S1-S4) such that the same data symbols are not placed at destination place numbers (7,8) of data symbols that exhibit poor channel estimation precisions. In a step (ST 430), the data symbol placing part (105) places, in accordance with the decision in the foregoing step (ST 420), the four data symbols (S1-S4), which are received from a repetition part (102), in one frame received from a channel estimation error predicting part (104).

摘要翻译： 一种用于确保当相同的数据符号被组合时的重复系统等的无线通信方法，实现了分集增益。 在步骤（ST 420）中，数据符号放置部（105）决定各个复制数据符号（S1-S4）的目的地位置，使得相同的数据符号不被放置在数据符号的目的地地点号码（7,8） 表现出较差的信道估计精度。 在步骤（ST430）中，数据符号放置部（105）根据上述步骤（ST420）的判定，设置从重复部分接收的四个数据符号（S1〜S4） 102），在从信道估计误差预测部（104）接收的一帧中。

公开(公告)号：USRE44200E1

公开(公告)日：2013-05-07

申请号：US13444664

申请日：2006-03-13

申请人： Tomohiro Imai ,  Ayako Horiuchi ,  Akihiko Nishio ,  Kenichi Kuri ,  Hiroaki Morino

发明人： Tomohiro Imai ,  Ayako Horiuchi ,  Akihiko Nishio ,  Kenichi Kuri ,  Hiroaki Morino

IPC分类号： H04B15/00 ,  H04B7/15

CPC分类号： H04B7/15557 ,  H04B7/2606 ,  H04L1/0003 ,  H04L1/0009 ,  H04L2001/0092

摘要： A wireless communication system enabling multihop communication while maintaining the system throughput and preventing degradation of the user throughput. In the system, a BS (base station) determines the relaying method (whether an RS performs reproduction relay or nonreproduction relay) of the RS (relaying station) and the MCS of multihop communication according to the reception quality (the line quality among an MS2, the RS, and the BS) of the pilot for nonreproduction relay, the reception quality (the line quality between the RS and the BS) of the pilot 2 for reproduction relay, and the line quality (the line quality between the MS2 and the RS) measured at the RS. The determination result is transmitted as relay information to the RS and to the MS2 (a mobile station (2)) through the RS. The MS2 encodes and modulates the uplink data with the MCS based on the relay information and transmits the data to the RS. The RS relays the uplink data while selecting nonreproduction relay or reproduction relay according to the relay information.

摘要翻译： 一种能够实现多跳通信同时维持系统吞吐量并防止用户吞吐量恶化的无线通信系统。 在该系统中，BS（基站）根据接收质量（MS2中的线路质量）确定RS（中继站）的RS中继方法（RS是否执行再生中继或不再生中继） 用于非再生继电器的导频的RS，和BS），用于再现中继的导频2的接收质量（RS与BS之间的线路质量）和线路质量（MS2与 RS）。 确定结果通过RS作为中继信息发送到RS和MS2（移动台（2））。 MS2通过基于中继信息的MCS对上行数据进行编码和调制，并将数据发送给RS。 RS根据中继信息选择非再生继电器或再生继电器时中继上行数据。

公开(公告)号：US08064503B2

公开(公告)日：2011-11-22

申请号：US11576039

申请日：2005-09-26

申请人： Yasuaki Yuda ,  Tomohiro Imai ,  Kenichi Miyoshi

发明人： Yasuaki Yuda ,  Tomohiro Imai ,  Kenichi Miyoshi

IPC分类号： H04B1/38 ,  H04W4/00

CPC分类号： H04L27/2626 ,  H04B7/0615 ,  H04L27/2647

摘要： 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 from a 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).

摘要翻译： 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，副载波发送权重生成部（513）根据从信道信息生成部（511）接收到的各子载波的信道信息和从子载波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 组接收权重生成部（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：US08050619B2

公开(公告)日：2011-11-01

申请号：US12282331

申请日：2007-03-29

申请人： Ayako Horiuchi ,  Kenichi Miyoshi ,  Tomohiro Imai ,  Hiroaki Morino

发明人： Ayako Horiuchi ,  Kenichi Miyoshi ,  Tomohiro Imai ,  Hiroaki Morino

IPC分类号： H04B3/36

CPC分类号： H04B7/022 ,  H04B7/026 ,  H04B7/15592 ,  H04L1/0643 ,  H04L1/1887 ,  H04L2001/0097

摘要： Provided is a mobile communication system capable of obtaining a diversity effect even when a signal received by a relay station has an error in a corporate relay to which time space encoding is applied. In this mobile communication system, when S1 has no error and S2 has an error, a relay station (1) does not perform relay transmission at time t (Null) and relay-transmits S1* to a base station at time t+T. That is, in this case, the relay station (1) relay-transmits at time t+T only S1 to be transmitted at time t when no error is contained in either S1 or S2. Moreover, when S1 has an error and S2 has no error, the relay station (1) relay-transmits S2 at time t and does not perform relay transmission at time t+T (Null). That is, in this case, the relay station (1) relay-transmits only S2 to be transmitted at time t+T at time t if no error is contained in either S1 or S2.

摘要翻译： 提供了即使当中继站接收的信号在应用了时间空间编码的公司中继中具有错误时，也能够获得分集效应的移动通信系统。 在该移动通信系统中，当S1没有错误且S2有错误时，中继站（1）在时刻t（Null）不执行中继传输，并且在时刻t + T向基站中继发送S1 *。 也就是说，在这种情况下，中继站（1）在时刻t + T仅中继 - 在S1或S2中不包含错误的情况下，在时间t发送要发送的S1。 此外，当S1发生错误且S2没有错误时，中继站（1）在时刻t中继发送S2，在时刻t + T（Null）不进行中继发送。 也就是说，在这种情况下，如果在S1或S2中没有包含错误，则中继站（1）在时间t仅中继仅发送在时间t + T发送的S2。