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    • 2. 发明授权
    • Transmitting apparatus, receiving apparatus, and wireless communication method
    • 发送装置,接收装置和无线通信方法
    • US08279953B2
    • 2012-10-02
    • US11813722
    • 2005-12-27
    • Mitsuru UesugiEiji OtaAtsushi SumasuKeisuke Ebiko
    • Mitsuru UesugiEiji OtaAtsushi SumasuKeisuke Ebiko
    • H04K1/10H04L27/28
    • H04L25/022H04L5/0007H04L5/0048H04L25/0232H04L25/03159H04L25/03891H04L2025/03414H04L2025/03522
    • A transmitting apparatus, a receiving apparatus and a wireless communication method for suppressing interference between codes, while further reducing the ratio of redundant components occupying a signal to improve the transmission efficiency. The transmitting apparatus (100) transmits a signal having a frame structure in which a plurality of symbols follow a pilot symbol to which a guard interval has been added. In the receiving apparatus (200) that receives that signal, a long FFT target section acquiring part (202) acquires, from the received OFDM signal, a long FFT target section that is a target section in which delay waves are to be removed by use of a pilot symbol. A long FFT part (203) performs a fast Fourier transformation of the long FFT target section to convert it to a frequency domain signal. A frequency equalizing part (204) performs a frequency equalization of the long FFT target section by use of an interpolation result of communication line estimation value. A long IFFT part (205) performs an inverse fast Fourier transformation of the long FFT target section as frequency equalized to convert it back to a time domain signal.
    • 一种用于抑制代码之间的干扰的发送装置,接收装置和无线通信方法,同时进一步减少占用信号的冗余部件的比率以提高传输效率。 发送装置(100)发送具有帧结构的信号,其中多个符号遵循已经添加有保护间隔的导频符号。 在接收到该信号的接收装置(200)中,长FFT对象部分获取部(202)从接收到的OFDM信号中获取作为要使用的移除延迟波的目标部分的长FFT对象部 的飞行员符号。 长FFT部(203)对长FFT对象部进行快速傅里叶变换,将其变换为频域信号。 频率均衡部分(204)通过使用通信线路估计值的内插结果来执行长FFT对象部分的频率均衡。 长IFFT部分(205)执行长FFT目标部分的快速傅立叶逆变换作为均衡的频率,以将其转换回到时域信号。
    • 3. 发明授权
    • Mobile station apparatus, communication method, and base station apparatus
    • 移动站装置,通信方法以及基站装置
    • US08155227B2
    • 2012-04-10
    • US13160872
    • 2011-06-15
    • Jinsong DuanMitsuru UesugiKeisuke EbikoKeiji TakakusakiAtsushi Sumasu
    • Jinsong DuanMitsuru UesugiKeisuke EbikoKeiji TakakusakiAtsushi Sumasu
    • H04K1/10
    • H04L1/0026H04L1/0003H04L1/0009H04L1/0029H04L1/003H04L5/0007H04L5/0046H04L5/006H04L5/0091H04L25/022
    • 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.
    • 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)。
    • 5. 发明申请
    • PILOT TRANSMISSION METHOD, MIMO TRANSMISSION DEVICE, AND MIMO RECEPTION DEVICE
    • 导频传输方法,MIMO传输设备和MIMO接收设备
    • US20100260284A1
    • 2010-10-14
    • US12742894
    • 2008-12-09
    • Isamu YoshiiAtsushi SumasuTomohiro ImaiHidenori Kayama
    • Isamu YoshiiAtsushi SumasuTomohiro ImaiHidenori Kayama
    • H04L27/00
    • H04B7/0671H04L27/2601H04L27/2607
    • Provided is a MIMO transmission device which can effectively perform a pilot transmission by using a surplus sample generated in a pilot symbol while maintaining the pilot separation accuracy at a reception side. The MIMO transmission device (100) transmits a pilot symbol as follows. That is, in a first pilot transmission symbol section, a transmission section of a pilot signal transmitted from a first transmission antenna is partially overlapped by a pilot transmission section of a second transmission antenna. In a second pilot transmission symbol section, a pilot transmission section of the first transmission antenna is partially overlapped by a pilot transmission section of a third antenna. Among the pilot signals transmitted from the first antenna, the interference portions overlapped by transmission pilot signals from other antennas are different between the first pilot transmission symbol section and the second pilot transmission symbol section.
    • 提供一种MIMO传输装置,其可以通过在导频符号中生成的剩余采样同时在接收侧保持导频分离精度来有效地执行导频发送。 MIMO发送装置(100)如下发送导频符号。 也就是说,在第一导频发送符号部分中,从第一发送天线发送的导频信号的发送部分由第二发送天线的导频发送部分重叠。 在第二导频发送符号部分中,第一发送天线的导频发送部分由第三天线的导频发送部分重叠。 在从第一天线发送的导频信号中,与来自其他天线的发送导频信号重叠的干扰部分在第一导频传输符号部分和第二导频传输符号部分之间是不同的。
    • 7. 发明授权
    • Noise power estimation method and noise power estimation device
    • 噪声功率估计方法和噪声功率估计装置
    • US07532864B2
    • 2009-05-12
    • US10524213
    • 2004-02-16
    • Masaru FukuokaAtsushi SumasuSadayuki AbetaNoriyuki MaedaHiroyuki Atarashi
    • Masaru FukuokaAtsushi SumasuSadayuki AbetaNoriyuki MaedaHiroyuki Atarashi
    • H04B17/00
    • H04B1/7097H04B17/345H04B2201/70701H04L1/20
    • A pilot extract section 14 extracts a pilot signal from received signal. An adder 21 in-phase adds a plurality of correlated values of pilot signals for respective subcarriers. Delay devices 201-1 to 201-6 temporarily maintain one in-phase added value. Multiplier 202-1 to 202-6 multiplies a predetermined coefficient to the in-phase added value that is output from the delay device. The predetermined coefficient reflects the result, which is obtained by correcting for multiple times the difference of channel variation in the different subcarriers that is generated when noise power per one subcarrier is calculated. Each of the multiplying results is added by an adder 24, and is squared by a square device 25. A cumulative adder 26 cumulative-adds the squared values for the whole subcarrier. A multiplier 203 averages by multiplying predetermined values to the cumulative-added values. Having such configuration, even if the correlation between adjacent subcarriers becomes lower by frequency selective fading, the accuracy for estimating noise power can be improved.
    • 导频提取部分14从接收信号中提取导频信号。 同相的加法器21对各个副载波添加导频信号的多个相关值。 延迟装置201-1至201-6暂时保持一个同相的附加值。 乘法器202-1至202-6将预定系数与从延迟装置输出的同相相加值相乘。 预定系数反映通过多次计算在每个子载波的噪声功率被计算时产生的不同子载波中的信道变化的差异而获得的结果。 乘法结果中的每一个由加法器24相加,并由平方装置25平方。累积加法器26对整个子载波进行累加 - 相加。 乘法器203通过将预定值乘以累积附加值来平均。 具有这样的配置,即使相邻副载波之间的相关性通过频率选择性衰落变得较低,也可以提高估计噪声功率的精度。
    • 8. 发明申请
    • BASE STATION APPARATUS AND RESOURCE ASSIGNING METHOD
    • 基站设备和资源分配方法
    • US20090010211A1
    • 2009-01-08
    • US11815010
    • 2006-01-27
    • Atsushi SumasuHiroki HagaMasayuki Hoshino
    • Atsushi SumasuHiroki HagaMasayuki Hoshino
    • H04Q7/00
    • H04L1/0009H04L1/0003H04L1/0016H04L1/16H04W28/18
    • A base station apparatus that selects an optimum MCS level so as to improve system throughput. In this base station apparatus, a terminal rank detecting part (108) detects terminal rank information included in received data. An MCS table selecting part (109) selects, based on the rank of a communication terminal apparatus, an MCS table to be used for a scheduling. A scheduling part (151) stores a plurality of MCS tables indicative of a range of SINRs to which MSC levels are assigned; assigns, based on an MCS table selected by the MCS table selecting part (109) and also based on line quality information, a communication terminal apparatus to which the data is to be transmitted; and decides a modulation scheme and an encoding rate for the data to be transmitted to the assigned communication terminal apparatus.
    • 一种选择最佳MCS级别以提高系统吞吐量的基站装置。 在该基站装置中,终端秩检测部(108)检测包含在接收数据中的终端秩信息。 MCS表选择部(109)根据通信终端装置的等级选择要用于调度的MCS表。 调度部分(151)存储指示分配MSC级别的SINR范围的多个MCS表; 基于由MCS表选择部(109)选择的MCS表,并且还基于线路质量信息,分配要发送数据的通信终端装置; 并且确定要发送到所分配的通信终端装置的数据的调制方案和编码率。
    • 9. 发明申请
    • Transmission device and gain control method
    • 传输装置和增益控制方法
    • US20060285582A1
    • 2006-12-21
    • US10579062
    • 2004-11-12
    • Atsushi SumasuShoji MiyamotoSadaki FutagiKeiji TakakusakiTakao Nihei
    • Atsushi SumasuShoji MiyamotoSadaki FutagiKeiji TakakusakiTakao Nihei
    • H04L5/16
    • H04W52/52H03G3/3036H04B2001/0416
    • An apparatus that can lower the possibility of failing reception modulation in communication where data is transmitted with and without directivity and prevent deterioration of transmission efficiency caused by retransmission. With this apparatus, a gain control signal multiplex section (203) time division multiplexes a directional transmission signal and a gain control signal. A transmission level control section (204) controls the transmission power level of a gain control signal so that the transmission power level of the gain control signal is smaller than the transmission power level of a directional transmission signal and the received power level of the gain control signal is larger than a received power level of a nondirectional transmission signal at the receiving side, and controls the transmission power level of a directional transmission signal so that the received power level of the directional transmission signal is larger than the received power level of a nondirectional transmission signal and the received power level of a gain control signal at the receiving side.
    • 能够降低在具有指示性和无方向性的情况下传送数据的通信中的接收调制失败的可能性的装置,并且防止由重传引起的传输效率的恶化。 利用该装置,增益控制信号复用部分(203)时分复用定向传输信号和增益控制信号。 发送电平控制部(204)控制增益控制信号的发送功率电平,使得增益控制信号的发送功率电平小于定向发送信号的发送功率电平和增益控制的接收功率电平 信号大于接收侧的非定向传输信号的接收功率电平,并且控制定向发射信号的发射功率电平,使得定向传输信号的接收功率电平大于非定向传输信号的接收功率电平 发送信号和接收侧的增益控制信号的接收功率电平。
    • 10. 发明申请
    • Noise power estimation method and noise power estimation device
    • 噪声功率估计方法和噪声功率估计装置
    • US20060154608A1
    • 2006-07-13
    • US10524213
    • 2004-02-16
    • Masaru FukuokaAtsushi SumasuSadayuki AbetaNoriyuki MaedaHiroyuki Atarashi
    • Masaru FukuokaAtsushi SumasuSadayuki AbetaNoriyuki MaedaHiroyuki Atarashi
    • H04B17/00
    • H04B1/7097H04B17/345H04B2201/70701H04L1/20
    • A pilot extract section 14 extracts a pilot signal from received signal. An adder 21 in-phase adds a plurality of correlated values of pilot signals for respective subcarriers. Delay devices 201-1 to 201-6 temporarily maintain one in-phase added value. Multiplier 202-1 to 202-6 multiplies a predetermined coefficient to the in-phase added value that is output from the delay device. The predetermined coefficient reflects the result, which is obtained by correcting for multiple times the difference of channel variation in the different subcarriers that is generated when noise power per one subcarrier is calculated. Each of the multiplying results is added by an adder 24, and is squared by a square device 25. A cumulative adder 26 cumulative-adds the squared values for the whole subcarrier. A multiplier 203 averages by multiplying predetermined values to the cumulative-added values. Having such configuration, even if the correlation between adjacent subcarriers becomes lower by frequency selective fading, the accuracy for estimating noise power can be improved.
    • 导频提取部分14从接收信号中提取导频信号。 同相的加法器21对各个副载波添加导频信号的多个相关值。 延迟装置201-1至201-6暂时保持一个同相的附加值。 乘法器202-1至202-6将预定系数与从延迟装置输出的同相相加值相乘。 预定系数反映通过多次计算在每个子载波的噪声功率被计算时产生的不同子载波中的信道变化的差异而获得的结果。 乘法结果中的每一个由加法器24相加,并由平方装置25平方。 累积加法器26对整个子载波进行累加 - 相加。 乘法器203通过将预定值乘以累积附加值来平均。 具有这样的配置,即使相邻副载波之间的相关性通过频率选择性衰落变得较低,也可以提高估计噪声功率的精度。