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：US20090227211A1

公开(公告)日：2009-09-10

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 最有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：US07844013B2

公开(公告)日：2010-11-30

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： H04L27/00

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：US20090093265A1

公开(公告)日：2009-04-09

申请号：US11915375

申请日：2006-05-25

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

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

IPC分类号： H04B7/00

CPC分类号： H04B7/0689 ,  H04B7/0417 ,  H04B7/043 ,  H04B7/0434 ,  H04B7/063 ,  H04B7/0632 ,  H04L1/0002 ,  H04L1/0015 ,  H04L1/0016 ,  H04L1/1867

摘要： A radio transmitting apparatus, a radio receiving apparatus and a radio transmitting method wherein the accuracy of detecting streams in D-TxAA is improved. There is included a transmission mode switching part (102) that switches output destinations of first and second input streams (1865,1866) in accordance with the propagation environments of first and second MIMO channel beams (1831,1832). The transmission mode switching part (102) switches from a D-TxAA mode transmission to a first or second unique mode transmission in accordance with the propagation environments.

摘要翻译： 一种无线电发送装置，无线接收装置和无线电发送方法，其中检测D-TxAA中的流的精度得到改善。 包括根据第一和第二MIMO信道波束（1831,1832）的传播环境切换第一和第二输入流（1865,1866）的输出目的地的传输模式切换部分（102）。 传输模式切换部分（102）根据传播环境从D-TxAA模式传输切换到第一或第二唯一模式传输。

公开(公告)号：US20090055701A1

公开(公告)日：2009-02-26

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： H04L1/18 ,  G06F11/14

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. A buffer (104) temporarily stores transport bits, which have been interleaved, in preparation for retransmission. An intra-code-word interleaver (105) performs an interleave process by all of the bits included in the symbols to be simultaneously transmitted from a plurality of transmitting antennas. When performing an intra-code-word interleave process, the intra-code-word interleaver (105) performs the interleave process in accordance with an interleave pattern notified from an interleave pattern table (107). A counter (106) counts retransmission requests, and outputs the number of retransmissions to the interleave pattern table (107). The interleave pattern table (107) stores interleave patterns to be used for intra-code-word interleave process for the respective numbers of retransmissions, and notifies the intra-code-word interleaver (105) of an interleave pattern in accordance with a number of retransmissions.

摘要翻译： 一种MIMO发送装置，其根据传播环境的变化实现灵活的控制，以减少重发次数。 缓冲器（104）临时存储已经被交织的传输比特，以准备重传。 码内字交织器（105）通过从多个发送天线同时发送的符号中包含的所有比特执行交织处理。 当进行码内字交错处理时，码内字交织器（105）根据从交织模式表（107）通知的交织模式进行交织处理。 计数器（106）对重发请求进行计数，并将重发次数输出到交织模式表（107）。 交织模式表（107）存储要用于各个重传次数的码内字交织处理的交织模式，并根据数量的多个通知码内字交织器（105）的交织模式 重传。

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：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：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）。