会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 81. 发明授权
    • Method for using a symbol mapper using a symbol mapping scheme to generate modulation symbols according to a different symbol mapping scheme and a method for generating a symbol mapping scheme
    • 使用符号映射方法使用符号映射方法以根据不同符号映射方案生成调制符号的方法和用于生成符号映射方案的方法
    • US07961814B2
    • 2011-06-14
    • US11993967
    • 2005-06-29
    • Alexander Golitschek Edler Von ElbwartIsamu YoshiiChristian Wengerter
    • Alexander Golitschek Edler Von ElbwartIsamu YoshiiChristian Wengerter
    • H04L27/36
    • H04L27/34
    • The invention relates to method and apparatus for generating modulation symbols according to a second symbol mapping scheme by a symbol mapping unit being adapted to generate symbols according to a first symbol mapping scheme, wherein the first and second symbol mapping schemes define different mappings of data words of a stream to modulation symbols of a modulation scheme according to the respective symbol mapping scheme. Further, the invention relates to a method and apparatus for generating a mapping of data words to modulation symbols of a square 16 QAM constellation, the modulation symbols being representable by an inphase component and quadrature component. One aspect of the invention is the introduction of a bit sequence transformer unit transforming the data words to be mapped to modulation symbols prior to mapping thereby changing the Hamming distance properties of the mapping. Another aspect of the invention is the generation of a new AICO (Antipodal Inverted COnstellation) mapping scheme.
    • 本发明涉及一种用于根据第二符号映射方案通过符号映射单元产生适应于根据第一符号映射方案生成符号的调制符号的方法和装置,其中第一和第二符号映射方案定义数据字的不同映射 根据相应的符号映射方案的调制方案的调制符号的流。 此外,本发明涉及一种用于产生数据字到方形16QAM星座的调制符号的映射的方法和装置,所述调制符号可由同相分量和正交分量表示。 本发明的一个方面是引入一个比特序列变换器单元,在映射之前将要映射到数据字的映射到调制符号变换,从而改变映射的汉明距离属性。 本发明的另一个方面是生成新的AICO(Antipodal Inverted COnstellation)映射方案。
    • 82. 发明授权
    • Bit-operated rearrangement diversity for AICO mapping
    • AICO映射的位操作重排多样性
    • US07957482B2
    • 2011-06-07
    • US11996964
    • 2005-07-26
    • Alexander Golitschek Edler Von ElbwartChristian WengerterIsamu Yoshii
    • Alexander Golitschek Edler Von ElbwartChristian WengerterIsamu Yoshii
    • H04L5/12
    • H04L27/3405H04L1/02H04L1/18H04L25/067H04L27/38
    • Transmit diversity system in which constellation rearrangement is used. Both diversity signals contain the same data and both are 16-QAM, but the location of the data bits within the constellation is different. This averages the effect of the different levels of reliability of the different constellation points. A method for modifying a quadruple of data bits in a data transmission system using Quadrature. Amplitude Modulation with 16 different modulation states, 16-QAM, using an Antipodal Inverted Constellation AICO) mapping, swapping bits selecting contiguous symbol regions with bits selecting non-contiguous symbol regions. Depending on the particular pre-defined mapping and on the particular permutation of bits, inversion of selected bits may be performed in addition. The quadruples thus obtained are mapped to modulation symbols according to a pre-defined AICO mapping. In the corresponding method for receiving the symbols, likelihood values are swapped and modified in a way which is complementary to the permutation and inversion of bits, before they are combined with likelihood values from other symbols representing the same bits. Method ensures that there is a one to one correspondence between Hamming distance and Euclidian distance for the combined received data. In other words it ensures that, once combined, all 4 bit data words which differ by the same number of bits (Hamming distance) are the same distance apart in the constellation (Euclidian distance).
    • 使用星座重排的发射分集系统。 两个分集信号都包含相同的数据,并且都是16-QAM,但星座内的数据位的位置是不同的。 这平均了不同星座点的不同可靠性水平的影响。 一种用于使用Quadrature修改数据传输系统中的四倍数据位的方法。 使用16个不同调制状态的幅度调制,16-QAM,使用Antipodal反向星座AICO)映射,交换选择具有选择不连续符号区域的位的连续符号区的位。 根据特定的预定义映射和位的特定置换,可以另外执行所选位的反转。 根据预定义的AICO映射将由此获得的四倍数映射到调制符号。 在用于接收符号的相应方法中,在将它们与表示相同比特的其他符号的似然值组合之前,以与位的置换和反相互补的方式交换和修改似然值。 方法确保了组合接收数据的汉明距离和欧氏距离之间有一对一的对应关系。 换句话说,它确保一旦组合,通过相同位数(汉明距离)不同的所有4位数据字在星座(欧几里得距离)中是相同的距离。
    • 83. 发明申请
    • WIRELESS TRANSMISSION DEVICE, WIRELESS RECEPTION DEVICE, AND SYMBOL ARRANGING METHOD
    • 无线传输设备,无线接收设备和符号布置方法
    • US20110051856A1
    • 2011-03-03
    • US12941804
    • 2010-11-08
    • Masaru FukuokaIsamu YoshiiKenichi Miyoshi
    • Masaru FukuokaIsamu YoshiiKenichi Miyoshi
    • H04L27/06
    • H04L27/0008H04B1/707H04B7/12H04L27/34
    • A wireless transmission device enabled to improve an error rate performance at a receiver, by acquiring at least one of frequency diversity effect and a time diversity effect while keeping the interference resistance which is acquired by diffusion. In this transmission device, a modulation unit (101) modulates data to create a modulation symbol having in-phase components and quadrature components. An IQ individual spreading unit (102) arranges the diffusion chips, which are obtained by spreaing the modulation symbol, of the in-phase components and the quadrature components, in areas extending in diffusion domains set individually for the in-phase components and the quadrature components. An IQ combining unit (103) combines the arranged spreading chips of the in-phase components and the quadrature components.
    • 一种能够通过在保持通过扩散获得的干扰电阻的同时获取频率分集效应和时间分集效应中的至少一个而能够提高接收机的错误率性能的无线传输装置。 在该传输装置中,调制单元(101)调制数据以产生具有同相分量和正交分量的调制符号。 IQ个体扩展单元(102)将在同相分量和正交分量中调制符号获得的扩散芯片排列在对于同相分量和正交分量单独设置的扩散域中延伸的区域中 组件。 IQ组合单元(103)组合了排列的同相分量的扩展芯片和正交分量。
    • 85. 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。
    • 89. 发明申请
    • Transmission apparatus and peak suppression method
    • 传输装置和峰值抑制方法
    • US20070121738A1
    • 2007-05-31
    • US10573815
    • 2004-09-27
    • Isamu YoshiiKenichi MiyoshiJun ChengAkihiko NishioMasaru FukuokaMasaru Fukuoka
    • Isamu YoshiiKenichi MiyoshiJun ChengAkihiko NishioMasaru FukuokaMasaru Fukuoka
    • H04K1/10
    • H04L27/2624H04B1/707H04B2201/70706H04B2201/70707
    • 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 the waveform of 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. Where MCS is set for each subcarrier, sub-band selection section (114) selects the frequency of a subcarrier having large margin in reception quality and outputs the inverse replica within the range of the selected frequency to combination section (103).
    • 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的波形,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。 在为每个子载波设置MCS的情况下,子波段选择部(114)选择接收质量较大余量的副载波的频率,并将所选频率的范围内的反复制输出到组合部(103)。