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公开(公告)号：US08121227B2
公开(公告)日：2012-02-21
申请号：US12882989
申请日：2010-09-15
CPC分类号： H04L27/38 , H04B7/04 , H04L25/03184 , H04L25/067 , H04L2025/0342 , H04L2025/03426
摘要： It is possible to demodulate a plurality of modulated signals transmitted from a plurality of antennas by using a comparatively small-size circuit with a preferable error ratio characteristic. Partial bit judgment units (509, 512) demodulates partial bits of the 64QAM-modulated signal by modifying which of the bits in the 6-bit strings constituting a symbol is to be demodulated depending on in which region of the IQ plane the reception signal point exists. This improves the partial bit error characteristic judged by the partial bit judgment units (509, 512), which in turn improves reliability of the reduced candidate signal point for use by a likelihood detection unit (518). As a result, it is possible to improve the error ratio characteristic of the final reception digital signals (322, 323).
摘要翻译： 可以通过使用具有优选误差比特性的较小尺寸的电路来解调从多个天线发送的多个调制信号。 部分位判断单元（509,512）通过根据IQ平面的哪个区域修改构成符号的6位串中的哪个位要解调64QAM调制信号的部分位，接收信号点 存在 这改善了由部分比特判断单元（509,512）判断的部分比特误差特性，这又提高了可靠性检测单元（518）使用的缩减候补信号点的可靠性。 结果，可以提高最终接收数字信号（322,323）的误差比特性。
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公开(公告)号：US20100260278A1
公开(公告)日：2010-10-14
申请号：US12824047
申请日：2010-06-25
IPC分类号： H04L27/28
CPC分类号： H04L27/0008 , H04B7/0413 , H04B7/0417 , H04B7/0669 , H04L1/0006 , H04L1/0026 , H04L1/06 , H04L1/0618 , H04L1/08 , H04L5/0046 , H04L27/3405 , H04W52/42
摘要： Modulated signal A is transmitted from a first antenna, and modulated signal B is transmitted from a second antenna. As modulated signal B, modulated symbols S2(i) and S2(i+1) obtained from different data are transmitted at time i and time i+1 respectively. In contrast, as modulated signal A, modulated symbols S1(i) and S1(i)′ obtained by changing the signal point arrangement of the same data are transmitted at time i and time i+1 respectively. As a result the reception quality can be changed intentionally at time i and time+1, and therefore using the demodulation result of modulated signal A of a time when the reception quality is good enables both modulated signals A and B to be demodulated with good error rate performances.
摘要翻译： 从第一天线发送调制信号A，从第二天线发送调制信号B. 作为调制信号B，分别在时间i和时间i + 1发送从不同数据获得的调制符号S2（i）和S2（i + 1）。 相反，作为调制信号A，分别在时间i和时间i + 1发送通过改变相同数据的信号点排列获得的调制符号S1（i）和S1（i）'。 结果，可以在时间i和时间+ 1有意地改变接收质量，因此当接收质量好的时候使用调制信号A的解调结果使得能够以良好的误差解调调制信号A和B 率表现。
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公开(公告)号：US07280840B2
公开(公告)日：2007-10-09
申请号：US10704653
申请日：2003-11-12
IPC分类号： H04B7/005
CPC分类号： H04B7/043 , H04B7/0621 , H04B7/0848 , H04B17/24 , H04B17/318 , H04W52/42
摘要： Channel fluctuation values on propagation paths of modulated signals transmitted from a plurality of antennas are estimated, an eigenvalue of a channel fluctuation matrix created with the above-mentioned channel fluctuation values as elements is found in order to relate antenna received signals to modulated signals, and using that eigenvalue, receiving antenna selection, combining of modulated signals, and weighting processing on soft decision decoded values, are performed, and modulated signals are demodulated. By this means, it is possible to perform demodulation processing based on the effective reception power of a modulated signal (that is to say, the essential reception power, of the reception power obtained by a receiving apparatus, that can be effectively used when demodulating a modulated signal), enabling the precision of demodulation of modulated signals to be improved.
摘要翻译： 估计从多个天线发送的调制信号的传播路径上的信道波动值，找到以上述信道变动值作为要素而生成的信道变动矩阵的特征值，以将天线接收信号与调制信号相关联， 使用该特征值，接收天线选择，调制信号的组合和对软判决解码值的加权处理，并且调制信号被解调。 通过这种方式，可以基于调制信号（也就是接收设备获得的接收功率的基本接收功率）的有效接收功率进行解调处理，当解调 调制信号），能够提高调制信号的解调精度。
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公开(公告)号：US20070098103A1
公开(公告)日：2007-05-03
申请号：US10580398
申请日：2004-11-04
CPC分类号： H04L1/06 , H04B7/0413 , H04B7/0854 , H04L1/0054 , H04L1/006 , H04L1/007 , H04L25/03305 , H04L25/03324 , H04L25/03891 , H04L25/061 , H04L27/3488 , H04L27/38 , H04L2025/03611 , H04N19/39
摘要： A partial bit demodulation section (550) that demodulates partial bits among a plurality of bits that form 1 symbol of each modulated signal using a detection method different from likelihood detection, signal point reduction sections (514 and 516) that reduce the number of candidate signal points using demodulated partial bits, and a likelihood detection section (518) that obtains received digital signals (322 and 323) by performing likelihood detection based on the Euclidian distances between the reduced candidate signal points and a reception point, are provided. By this means, only some bits which are unlikely to be erroneous are found by the partial bit demodulation section (550), and other bits can be found by the likelihood detection section (518), enabling bit error rate performances to be effectively improved with a comparatively small computational complexity.
摘要翻译： 使用不同于似然检测的检测方法对形成每个调制信号的1个符号的多个比特中的部分比特进行解调的部分比特解调部分（550），减少候选信号数目的信号点减少部分（514和516） 提供使用解调部分比特的点，以及通过基于缩小候选信号点与接收点之间的欧几里德距离执行似然度检测来获得接收数字信号（322和323）的似然检测部分（518）。 通过这种方式，部分比特解调部分（550）仅发现一些不太可能出错的比特，并且可靠性检测部分（518）可以找到其他比特，从而能够有效地提高比特错误率性能， 相对较小的计算复杂度。
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公开(公告)号：US07206606B2
公开(公告)日：2007-04-17
申请号：US10516936
申请日：2003-11-26
CPC分类号： H04L5/023 , H04L1/0003 , H04L1/0618
摘要： A wireless communication apparatus includes a plurality of antennas that transmit modulation signals. A controller controls a control signal of the modulation signals based on an eigenvalue corresponding to a channel matrix generated using the modulation signals received by a communicating party.
摘要翻译： 无线通信装置包括发送调制信号的多个天线。 控制器基于与由通信方接收的调制信号生成的信道矩阵相对应的特征值来控制调制信号的控制信号。
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公开(公告)号：US20060234729A1
公开(公告)日：2006-10-19
申请号：US10562555
申请日：2004-06-30
IPC分类号： H04Q7/20
CPC分类号： H04B7/0413 , H04B7/0608 , H04B7/0613 , H04B7/0689 , H04B7/0697 , H04L1/06
摘要： Of any one of transmission method X of transmitting modulated signal A and modulated signal B including the same data from a plurality of antennas and transmission method Y of transmitting modulated signal A and modulated signal B having different data from the plurality of antennas, base station apparatus 201 does not change the transmission method during data transmission and changes only the modulation scheme. Base station apparatus 201 transmits modulated signal A and modulated signal B to communication terminal apparatus 251 using the determined transmission method and modulation scheme. In this way, it is possible to improve data transmission efficiency when transmitting data using the plurality of antennas.
摘要翻译： 发送调制信号A的发送方法X和包含来自多个天线的相同数据的调制信号B和从多个天线发送调制信号A和调制信号B的数据不同的发送方式Y中的任一种，基站装置 201在数据传输期间不改变传输方法，并且仅改变调制方案。 基站装置201使用确定的发送方法和调制方式向调制信号A和调制信号B发送到通信终端装置251。 以这种方式，可以在使用多个天线发送数据时提高数据传输效率。
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17.发明授权Radio communication method and apparatus selectively employing a plurality of antennas 有权选择性地采用多个天线的无线通信方法和装置公开(公告)号：US08457234B2
公开(公告)日：2013-06-04
申请号：US12637524
申请日：2009-12-14
CPC分类号： H04B7/0604 , H04B7/0608 , H04B7/0689 , H04B7/0691 , H04L25/0204 , H04L25/0224 , H04L27/18 , H04L27/2601 , H04L27/261
摘要： A transmitting apparatus that transmits signals from a plurality of antennas, and can improve the security of communication compared with a conventional system. In this apparatus, an antenna changing section (105) stores an antenna change pattern in internal memory, and each time a clock signal is input, generates an antenna change signal directing an antenna change in accordance with the antenna change pattern, and outputs this signal to an antenna selection section (106). Based on the antenna change signal, the antenna selection section (106) selects two different antennas from among the transmitting antennas (107-1 through 107-3) as transmitting antennas of transmit signal A output from a radio section (104-1) and transmit signal B output from a radio section (104-2), and performs radio transmission of transmit signal A and transmit signal B using the selected transmitting antennas.
摘要翻译： 从多个天线发送信号的发送装置，与以往的系统相比，能够提高通信的安全性。 在该装置中，天线变换部（105）将天线变换模式存储在内部存储器中，并且每次输入时钟信号时，根据天线变化模式生成指示天线变化的天线变换信号，并输出该信号 到天线选择部分（106）。 基于天线变换信号，天线选择部（106）从发送天线（107-1〜107-3）中选择2个不同的天线作为从无线部（104-1）输出的发送信号A的发送天线， 从无线电部分（104-2）输出的发送信号B，并且使用所选择的发送天线执行发送信号A和发送信号B的无线电发送。
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公开(公告)号：US08270521B2
公开(公告)日：2012-09-18
申请号：US13052833
申请日：2011-03-21
IPC分类号： H04B7/02
CPC分类号： H04L27/0008 , H04B7/0413 , H04B7/0417 , H04B7/0669 , H04L1/0006 , H04L1/0026 , H04L1/06 , H04L1/0618 , H04L1/08 , H04L5/0046 , H04L27/3405 , H04W52/42
摘要： Modulated signal A is transmitted from a first antenna, and modulated signal B is transmitted from a second antenna. As modulated signal B, modulated symbols S2(i) and S2(i+1) obtained from different data are transmitted at time i and time i+1 respectively. In contrast, as modulated signal A, modulated symbols S1(i) and S1(i)′ obtained by changing the signal point arrangement of the same data are transmitted at time i and time i+1 respectively. As a result the reception quality can be changed intentionally at time i and time i+1, and therefore using the demodulation result of modulated signal A of a time when the reception quality is good enables both modulated signals A and B to be demodulated with good error rate performances.
摘要翻译： 从第一天线发送调制信号A，从第二天线发送调制信号B. 作为调制信号B，分别在时间i和时间i + 1发送从不同数据获得的调制符号S2（i）和S2（i + 1）。 相反，作为调制信号A，分别在时间i和时间i + 1发送通过改变相同数据的信号点排列获得的调制符号S1（i）和S1（i）'。 结果，可以在时间i和时间i + 1有意地改变接收质量，因此当接收质量好的时候使用调制信号A的解调结果使得调制信号A和B能够被良好地解调 错误率表现。
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公开(公告)号：US08259837B2
公开(公告)日：2012-09-04
申请号：US12913601
申请日：2010-10-27
IPC分类号： H04B7/02
CPC分类号： H04L27/0008 , H04B7/0413 , H04B7/0417 , H04B7/0669 , H04L1/0006 , H04L1/0026 , H04L1/06 , H04L1/0618 , H04L1/08 , H04L5/0046 , H04L27/3405 , H04W52/42
摘要： Modulated signal A is transmitted from a first antenna, and modulated signal B is transmitted from a second antenna. As modulated signal B, modulated symbols S2(i) and S2(i+1) obtained from different data are transmitted at time i and time i+1 respectively. In contrast, as modulated signal A, modulated symbols S1(i) and S1(i)′ obtained by changing the signal point arrangement of the same data are transmitted at time i and time i+1 respectively. As a result the reception quality can be changed intentionally at time i and time i+1, and therefore using the demodulation result of modulated signal A of a time when the reception quality is good enables both modulated signals A and B to be demodulated with good error rate performances.
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公开(公告)号：US08081703B2
公开(公告)日：2011-12-20
申请号：US12913601
申请日：2010-10-27
IPC分类号： H04B7/02
摘要： Modulated signal A is transmitted from a first antenna, and modulated signal B is transmitted from a second antenna. As modulated signal B, modulated symbols S2(i) and S2(i+1) obtained from different data are transmitted at time i and time i+1 respectively. In contrast, as modulated signal A, modulated symbols S1(i) and S1(i)′ obtained by changing the signal point arrangement of the same data are transmitted at time i and time i+1 respectively. As a result the reception quality can be changed intentionally at time i and time i+1, and therefore using the demodulation result of modulated signal A of a time when the reception quality is good enables both modulated signals A and B to be demodulated with good error rate performances.
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