公开(公告)号：US20090238290A1

公开(公告)日：2009-09-24

申请号：US12091092

申请日：2006-10-27

申请人： Tomohiro Imai ,  Masayuki Hoshino ,  Yasuaki Yuda ,  Ryohei Kimura ,  Yuichi Kobayakawa

发明人： Tomohiro Imai ,  Masayuki Hoshino ,  Yasuaki Yuda ,  Ryohei Kimura ,  Yuichi Kobayakawa

IPC分类号： H04L27/28

CPC分类号： H04B7/0613 ,  H04B7/0684 ,  H04L1/0026 ,  H04L1/0041 ,  H04L1/06 ,  H04L5/0023 ,  H04L5/0051 ,  H04L25/0204 ,  H04L25/0226 ,  H04L27/2613 ,  H04W24/00 ,  H04W48/08 ,  H04W72/04

摘要： Provided is a transmitting device which improves a data rate while maintaining channel estimation accuracy, or improves channel estimation accuracy while maintaining a data rate, in a MIMO-OFDM system. In the transmitting device, a transmitting antenna information adding section (104) adds transmitting antenna information to a pilot signal by performing different phase rotation to the separate pilot signal by transmitting antenna by having a common pilot signal as a reference phase. A pilot arranging section (107) is previously provided with, as a conversion table, a corresponding relationship between combination information of the transmitting antenna and a subcarrier to be used for transmission of the pilot signal and control information. The pilot arranging section (107) allocates the pilot signal outputted from the transmitting antenna information adding section (104) to the subcarrier to have the combination information in accordance with the control information.

摘要翻译： 提供了一种发送装置，其在维持信道估计精度的同时提高数据速率，或者在MIMO-OFDM系统中保持数据速率的同时提高信道估计精度。 在发送装置中，发送天线信息添加部（104）通过以公共导频信号作为参考相位，通过发送天线对分离导频信号进行不同相位旋转，将发送天线信息添加到导频信号。 导频安排部分（107）预先具有作为转换表的发送天线的组合信息和要用于发送导频信号的子载波和控制信息之间的对应关系。 导频安排部分（107）将从发射天线信息添加部分（104）输出的导频信号分配给子载波，以根据控制信息具有组合信息。

公开(公告)号：US20090034637A1

公开(公告)日：2009-02-05

申请号：US11912630

申请日：2006-04-24

申请人： Masayuki Hoshino ,  Ryohei Kimura ,  Yasuaki Yuda ,  Tomohiro Imai ,  Kenichi Miyoshi ,  Akihiko Nishio

发明人： Masayuki Hoshino ,  Ryohei Kimura ,  Yasuaki Yuda ,  Tomohiro Imai ,  Kenichi Miyoshi ,  Akihiko Nishio

IPC分类号： H04L27/28 ,  H04J99/00

CPC分类号： H04B7/0669 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0673 ,  H04B17/24 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/004 ,  H04L1/1867 ,  H04W52/267

摘要： A link adaptation method and others wherein feedback information amount can be reduced. According to this method, a receiving apparatus (100) calculates, based on a channel matrix, a capacity (C) and a stream ratio (r) that is a ratio of the reception qualities of streams, and then transmits, as feedback information, the calculated capacity (C) and stream ratio (r) to a transmitting apparatus. In the transmitting apparatus (200), the number of transmittable streams, the modulation scheme and the fed-back capacity (C) are used to calculate the encoding ratio (R) and sequence length (S) of spatial multiplexed symbols. Then, the modulation scheme (M1-Mn) of each stream is decided based on the fed-back stream ratio (r) and the sequence length (S) of spatial multiplexed symbols.

摘要翻译： 链路适配方法等可以减少反馈信息量。 根据该方法，接收装置（100）基于信道矩阵计算作为流的接收质量的比率的容量（C）和流比（r），然后作为反馈信息， 计算的容量（C）和流量比（r）。 在发送装置（200）中，使用可发送流的数量，调制方式和反馈容量（C）来计算空间复用符号的编码率（R）和序列长度（S）。 然后，基于反馈流比（r）和空间复用符号的序列长度（S）来决定各流的调制方式（M1-Mn）。

公开(公告)号：US08345562B2

公开(公告)日：2013-01-01

申请号：US11915847

申请日：2006-06-01

申请人： Masayuki Hoshino ,  Ryohei Kimura ,  Yasuaki Yuda ,  Tomohiro Imai ,  Kenichi Miyoshi ,  Katsuhiko Hiramatsu

发明人： Masayuki Hoshino ,  Ryohei Kimura ,  Yasuaki Yuda ,  Tomohiro Imai ,  Kenichi Miyoshi ,  Katsuhiko Hiramatsu

IPC分类号： H04J1/16

CPC分类号： H04L1/0061 ,  H04B7/0417 ,  H04B7/0632 ,  H04B7/0697 ,  H04L1/0002 ,  H04L1/0021 ,  H04L1/203

摘要： A spatial multiplex number controlling method and others wherein streams can be separated for each of receivers and the transmission efficiency can be improved. In a receiving apparatus, a PER is calculated from a history of CRC test results per stream multiplex number. A reception quality and an offset corresponding to the calculated PER are fed back to a transmitting apparatus. The transmitting apparatus assigns, based on the fed-back reception quality and offset, the streams, thereby controlling the stream multiplex number.

摘要翻译： 空间多路复用数控制方法等，其中可以为每个接收机分离流，并且可以提高传输效率。 在接收装置中，根据每个流多路复用数的CRC测试结果的历史来计算PER。 将与计算出的PER对应的接收质量和偏移反馈到发送装置。 发送装置基于反馈接收质量和偏移分配流，从而控制流多路复用数。

公开(公告)号：US08086927B2

公开(公告)日：2011-12-27

申请号：US11909415

申请日：2006-03-27

申请人： Masayuki Hoshino ,  Ryohei Kimura ,  Yasuaki Yuda ,  Tomohiro Imai ,  Kenichi Miyoshi

发明人： Masayuki Hoshino ,  Ryohei Kimura ,  Yasuaki Yuda ,  Tomohiro Imai ,  Kenichi Miyoshi

IPC分类号： G08C25/02 ,  G06F11/10

CPC分类号： H04L1/0009 ,  H04L1/0071 ,  H04L1/08 ,  H04L1/1812

摘要： A MIMO transmitting apparatus that achieves a flexible control in accordance with variation of a propagation environment to reduce the number of retransmissions is disclosed. An intra-code-word interleaver performs an interleave process on bits included in symbols to be simultaneously transmitted from a plurality of transmitting antennas. When performing the intra-code-word interleave process, the intra-code-word interleaver performs the interleave process in accordance with an interleave pattern notified from an interleave pattern table. A counter counts a number of retransmission requests, and outputs the number of retransmission requests to the interleave pattern table. The interleave pattern table stores interleave patterns to be used for the intra-code-word interleave process for the respective numbers of retransmission requests, and notifies the intra-code-word interleaver of an interleave pattern in accordance with the number of retransmission requests.

摘要翻译： 公开了一种根据传播环境的变化实现灵活控制以减少重发次数的MIMO发送装置。 码内字交错器对从多个发送天线同时发送的符号中包含的比特执行交织处理。 当执行码内字交错处理时，帧内码交织器根据从交织模式表通知的交织模式进行交织处理。 计数器对多个重传请求进行计数，并将重传请求的次数输出到交织模式表。 交织模式表存储用于各个重发请求次数的码内字交织处理的交织模式，并根据重发请求次数通知码内字交织器交织模式。

公开(公告)号：US08081702B2

公开(公告)日：2011-12-20

申请号：US12280677

申请日：2007-02-28

申请人： Masayuki Hoshino ,  Kenichi Miyoshi ,  Yasuaki Yuda ,  Katsuhiko Hiramatsu ,  Ryohei Kimura

发明人： Masayuki Hoshino ,  Kenichi Miyoshi ,  Yasuaki Yuda ,  Katsuhiko Hiramatsu ,  Ryohei Kimura

IPC分类号： H04B7/02

CPC分类号： H04B7/0626 ,  H04B7/0417 ,  H04B7/0434 ,  H04B7/063 ,  H04B7/0689

摘要： It is possible to prevent lowering of a throughput of a radio communication system even when propagation path environments of an uplink line and downlink line are asymmetric. A maximum proper value calculation unit (115) calculates a maximum proper value from a channel matrix. A maximum proper value comparison unit (116) compares the maximum proper value with a maximum proper value of the downlink line reported separately from a base station. According to the comparison result obtained by the maximum proper value comparison unit (116), a proper mode initiative instruction unit (117) decides to pass the proper mode initiative to a communication partner or to the local device. When the initiative is to be passed to the local device, this fact is reported to a proper bam correction unit (118). When the proper beam correction unit (118) gets the proper mode initiative, the proper beam correction unit (118) corrects the correlation matrix by using the proper values of both of the downlink line and the uplink line and instructs a directivity forming unit (103) to form a proper beam according to the correlation matrix after the correction.

摘要翻译： 即使上行链路和下行链路的传播路径环境不对称，也可以防止无线通信系统的吞吐量的降低。 最大适当值计算单元（115）从信道矩阵计算最大适当值。 最大适当值比较单元（116）将最大适当值与从基站分开报告的下行线路的最大适当值进行比较。 根据由最大适当值比较单元（116）获得的比较结果，正确的模式主动指示单元（117）决定将适当的模式主动通过通信对方或本地设备。 当该举措传递给本地设备时，这一事实报告给适当的巴姆纠正单位（118）。 当正确的光束校正单元（118）获得适当的模式主动时，适当的光束校正单元（118）通过使用下行链路线路和上行线路两者的适当值来校正相关矩阵，并且指示方向性形成单元（103 ）根据校正后的相关矩阵形成适当的波束。

公开(公告)号：US07920889B2

公开(公告)日：2011-04-05

申请号：US11915724

申请日：2006-05-30

申请人： Masayuki Hoshino ,  Ryohei Kimura ,  Yasuaki Yuda ,  Tomohiro Imai ,  Kenichi Miyoshi

发明人： Masayuki Hoshino ,  Ryohei Kimura ,  Yasuaki Yuda ,  Tomohiro Imai ,  Kenichi Miyoshi

IPC分类号： H04B7/00 ,  H04B1/04

CPC分类号： H04W52/247 ,  H04W52/262

摘要： A transmitting apparatus, a receiving apparatus and a transmission power control method wherein even in a case of performing a transmission power control of multi-valued modulated symbols, the degradation of reception characteristic and that of network usage efficiency can be avoided. A power control instructing part (204) adjusts, based on an encoding rate and a modulation scheme in a case of applying a power control value, which maximizes the MIMO channel capacity, to each stream, the power control value of a stream, which is the most likely to be affected by a power estimation error, into a reference value, and then applies the adjustment value used for that adjustment to the other streams, that is, the streams that are not likely to be affected by the power estimation error. A power control part (205) performs a transmission power control in accordance with the power control value as adjusted by the power control instructing part (204).

摘要翻译： 一种发送装置，接收装置和发送功率控制方法，其中即使在执行多值调制符号的发送功率控制的情况下，也可以避免接收特性的劣化和网络使用效率的劣化。 功率控制指示部（204）根据编码率和调制方式，对每个流施加使MIMO信道容量最大化的功率控制值，将流的功率控制值，即 最可能受功率估计误差影响的参考值，然后将用于该调整的调整值应用于其他流，即不太可能受功率估计误差影响的流。 功率控制部（205）根据由功率控制指示部（204）调节的功率控制值进行发送功率控制。

公开(公告)号：US20100202386A1

公开(公告)日：2010-08-12

申请号：US12680164

申请日：2008-09-26

申请人： Shinsuke Takaoka ,  Masayuki Hoshino ,  Akihiko Nishio ,  Yasuaki Yuda ,  Ryohei Kimura

发明人： Shinsuke Takaoka ,  Masayuki Hoshino ,  Akihiko Nishio ,  Yasuaki Yuda ,  Ryohei Kimura

IPC分类号： H04W72/04

CPC分类号： H04L1/0083 ,  H04L69/323 ,  H04W28/06

摘要： A wireless communication apparatus wherein the power consumption can be reduced. In this apparatus, a code block dividing part (101) divides a transport block, in which filler bits have been inserted, into a plurality of code blocks. A mapping control part (107) controls, based on both scheduling information, which is received from a scheduler (not shown) and indicative of physical channel resources to be used for code block transmission, and the number of filler bits which is received from the code block dividing part (101), the plurality of code blocks so that they will be mapped to the respective physical channel resources in such an order that a respective code block having a less number of filler bits will be mapped to a respective more forward physical channel resource. A mapping part (108) then maps, based on mapping information received from the mapping control part (107), data symbols, which are received from the modulating parts (106) of the respective ones of code block processing parts (102-1 to 102-C), to the physical channel resources.

摘要翻译： 一种能够降低功耗的无线通信装置。 在该装置中，代码块分割部（101）将填充位插入的传送块分割为多个代码块。 映射控制部分（107）基于从调度器（未示出）接收并指示要用于码块传输的物理信道资源的两个调度信息和从所述调度器接收的填充比特数 代码块分割部分（101），多个代码块，使得它们将被映射到各个物理信道资源，使得具有较少填充比特数的相应代码块将被映射到相应的更前进的物理 渠道资源 映射部分（108）然后基于从映射控制部分（107）接收到的映射信息，映射从数据块处理部分（102-1至...的相应代码块处理部分）的调制部分（106）接收的数据符号 102-C），到物理信道资源。

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：US20090060082A1

公开(公告)日：2009-03-05

申请号：US11912832

申请日：2006-04-26

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

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

IPC分类号： H04B7/02

CPC分类号： H04L25/0206 ,  H04B7/0421 ,  H04B7/0626 ,  H04B7/065

摘要： A wireless communication apparatus that allows channel information to be reproduced with high precision at a transmitting end without increasing feedback information amount. In this apparatus, a channel estimating part (103) uses received pilot signals to perform channel estimation for each channel. A correlation detecting part (104) uses the result of the channel estimation to obtain correlation values between the channels, thereby detecting correlation values of all channels. An amplitude/phase ratio determining part (105) determines, based on the correlation values, the quantization bit ratio of the amplitude and phase of channel information to be used when those amplitude and phase are quantized. A feedback information generating part (106) quantizes the channel information in accordance with the determined ratio of the amplitude and phase.

摘要翻译： 一种允许在发送端以高精度再现信道信息而不增加反馈信息量的无线通信装置。 在该装置中，信道估计部（103）使用接收到的导频信号对每个信道进行信道估计。 相关检测部（104）使用信道估计的结果来获得信道之间的相关值，从而检测所有信道的相关值。 幅度/相位比确定部分（105）基于相关值，确定当这些幅度和相位被量化时要使用的信道信息的幅度和相位的量化比特率。 反馈信息生成部（106）根据所确定的振幅和相位的比率量化通道信息。

公开(公告)号：US20090022239A1

公开(公告)日：2009-01-22

申请号：US11915846

申请日：2006-06-01

申请人： Ryohei Kimura ,  Masayuki Hoshino ,  Tomohiro Imai ,  Kenichi Miyoshi ,  Yasuaki Yuda

发明人： Ryohei Kimura ,  Masayuki Hoshino ,  Tomohiro Imai ,  Kenichi Miyoshi ,  Yasuaki Yuda

IPC分类号： H04B7/04

CPC分类号： H04B7/0426 ,  H04L1/0002 ,  H04L1/005 ,  H04L25/0212

摘要： A symbol arranging method by which a processing load due to channel estimation for MIMO channels can be reduced. In the methods a symbol is arranged for a transmission frame format having a pilot area and a data area. The pilot symbol is arranged in the pilot area. An ICE data symbol used for iterative channel estimation (ICE) is arranged in an ICE data area in the data area. The MIMO data symbol not used for ICE is arranged in the MIMO data area in the data area.

摘要翻译： 一种符号排列方法，可以减少由于MIMO信道的信道估计引起的处理负担。 在方法中，对具有导频区域和数据区域的传输帧格式设置符号。 导频符号安排在试点区域。 用于迭代信道估计（ICE）的ICE数据符号被布置在数据区域中的ICE数据区域中。 不用于ICE的MIMO数据符号被布置在数据区中的MIMO数据区域中。