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71.发明授权Communication method, and transmitting apparatus and receiving apparatus using that communication method 有权通信方法，以及使用该通信方法的发送装置和接收装置公开(公告)号：US07787432B2
公开(公告)日：2010-08-31
申请号：US12417284
申请日：2009-04-02
CPC分类号： H04L5/0048 , H04B7/0413 , H04B7/0417 , H04B7/0613 , H04B7/0837 , H04J11/00 , H04L5/0007 , H04L25/0204 , H04L25/0224 , H04L27/2647 , H04L27/2657 , H04L27/2662 , H04W72/0453
摘要： A transmission method for transmitting an orthogonal frequency division multiplexing signal. The method includes composing a plurality of carrier groups each including one or more subcarriers and assigning transmission data for a plurality of transmission destination terminals, to the plurality of carrier groups, on a basis of one carrier group for one transmission destination terminal basis. The method further includes selecting, for each of the carrier groups, one of a first frame configuration where the transmission data is transmitted using one modulated signal, and a second frame configuration where the transmission data is transmitted using a plurality of modulated signals and transmitting the assigned transmission data of the plurality of transmission destination terminals at a same time on a time axis.
摘要翻译： 一种发送正交频分复用信号的发送方法。 该方法包括：基于一个发送目的地终端的一个载波组，构成多个载波组，每个载波组包括一个或多个子载波，并为多个发送目的地终端分配发送数据给多个载波组。 该方法还包括为每个载波组选择使用一个调制信号发送发送数据的第一帧配置中的一个，以及使用多个调制信号发送发送数据的第二帧配置，并且发送 在时间轴上同时分配多个发送目的地终端的发送数据。
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公开(公告)号：US20100128815A1
公开(公告)日：2010-05-27
申请号：US12694089
申请日：2010-01-26
IPC分类号： H04L27/00
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 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 that reduce the number of candidate signal points using demodulated partial bits, and a likelihood detection section obtains received digital signals by performing likelihood detection based on the Euclidian distances between the reduced candidate signal points and a reception point, are provided. By this, only some bits which are unlikely to be erroneous are found by the partial bit demodulation section, and other bits can be found by the likelihood detection section, enabling bit error rate performances to be effectively improved with a comparatively small computational complexity.
摘要翻译： 一种部分比特解调部分，其使用不同于似然检测的检测方法来解调形成每个调制信号的1个符号的多个比特中的部分比特，使用解调的部分比特减少候选信号点的数量的信号点减少部分，以及 提供了通过基于缩小的候选信号点与接收点之间的欧几里德距离进行似然度检测来获得接收到的数字信号的方法。 由此，部分比特解调部分仅发现一些不太可能出错的比特，可以通过似然度检测部分找到其他的比特，从而能够以比较小的计算复杂度有效地提高误码率性能。
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公开(公告)号：US07724638B2
公开(公告)日：2010-05-25
申请号：US10485115
申请日：2002-07-23
IPC分类号： H04J11/00
CPC分类号： H04B1/711 , H04B1/707 , H04B1/7075 , H04B2201/70705 , H04B2201/70716 , H04B2201/70728 , H04J13/00 , H04L1/0003 , H04L1/0023 , H04L5/0007 , H04L5/0016 , H04L5/0044 , H04L5/0048 , H04L27/18 , H04L27/227 , H04L27/2602 , H04L27/2662 , H04L27/34 , H04L27/364 , H04L27/38 , H04L2027/004 , H04L2027/0061
摘要： On a transmitting side, a spread modulated signal that has undergone spread spectrum processing and an information modulated signal that has not undergone spread spectrum processing are multiplexed in a same frequency band. On the receiving side, the specific modulated signal is first demodulated by a spread spectrum demodulation section, then a replica signal of the specific modulated signal is generated by a spread spectrum modulated signal regeneration section, and the information signal that has not undergone spread spectrum processing is extracted by eliminating the replica signal from the multiplex signal. Thus, even when a large number of information signals are transmitted in a same frequency band, these signals can be separated and demodulated satisfactorily on the receiving side.
摘要翻译： 在发送侧，经过扩展频谱处理的扩频调制信号和未进行扩展频谱处理的信息调制信号被复用在同一频带。 在接收侧，通过扩频解调部首先对特定的调制信号进行解调，由扩频调制信号再生部生成特定调制信号的复制信号，没有进行扩频处理的信息信号 通过从复用信号中消除复制信号来提取。 因此，即使在相同频带中发送大量信息信号的情况下，也能够在接收侧令人满意地分离和解调这些信号。
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公开(公告)号：US07715504B2
公开(公告)日：2010-05-11
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 demodulates partial bits among a plurality of bits that form one symbol of each modulated signal using a detection method different from likelihood detection. Signal point reduction sections reduce the number of candidate signal points using demodulated partial bits. A likelihood detection section obtains received digital signals by performing likelihood detection based on the Euclidian distances between the reduced candidate signal points and a reception point. Only some bits which are unlikely to be erroneous are found by the partial bit demodulation section, and other bits can be found by the likelihood detection section, enabling bit error rate performances to be effectively improved with a comparatively small computational complexity.
摘要翻译： 部分位解调部分使用与似然检测不同的检测方法解调形成每个调制信号的一个符号的多个比特中的部分比特。 信号点减少部分使用解调的部分比特减少候选信号点的数量。 似然度检测部通过基于缩小候补信号点与接收点之间的欧几里德距离进行似然度检测来获得接收数字信号。 只有部分比特解调部分才能发现一些不太可能出错的比特，可以通过似然度检测部分找到其他比特，从而能够以较小的计算复杂度有效提高误码率性能。
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公开(公告)号：US07664011B2
公开(公告)日：2010-02-16
申请号：US12175532
申请日：2008-07-18
IPC分类号： H04J13/00
CPC分类号： H04L5/0058 , H04B1/692 , H04L1/0001 , H04L1/0003 , H04L5/0007 , H04L5/0021 , H04L5/006 , H04L5/0064 , H04L5/0075 , H04L5/0092 , H04L27/0008 , H04L27/2601 , H04W72/0453
摘要： The invention performs orthogonal frequency division multiplex processing on a transmission signal to form an OFDM modulation signal (daubed in FIG.) and performs orthogonal frequency division multiplex processing and code division multiple access processing on a transmission signal to form an OFDM-CDM modulation signal (shaded in FIG.) to transmit the OFDM modulation signal and the OFDM-CDM modulation signal, which makes it possible to transmit data in a very high rate using the OFDM modulation signal while making it possible to transmit data in a higher quality using the OFDM-CDM modulation signal than using the OFDM-modulation signal, although it is slightly inferior to OFDM modulation in terms of high rate transmission.
摘要翻译： 本发明对传输信号进行正交频分复用处理以形成OFDM调制信号（在图中涂覆），并对传输信号执行正交频分复用处理和码分多址处理，以形成OFDM-CDM调制信号（ 发送OFDM调制信号和OFDM-CDM调制信号，这使得可以使用OFDM调制信号以非常高的速率发送数据，同时可以使用OFDM来传输更高质量的数据 -CDM调制信号比使用OFDM调制信号，尽管在高速率传输方面略逊于OFDM调制。
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76.发明授权Communication method, transmitting device using the same, and receiving device using the same 有权通信方法，使用其的发送装置，以及使用其的接收装置公开(公告)号：US07570626B2
公开(公告)日：2009-08-04
申请号：US10516937
申请日：2003-07-16
CPC分类号： H04L5/0048 , H04B7/0413 , H04B7/0417 , H04B7/0613 , H04B7/0837 , H04J11/00 , H04L5/0007 , H04L25/0204 , H04L25/0224 , H04L27/2647 , H04L27/2657 , H04L27/2662 , H04W72/0453
摘要： A transmission method for transmitting an orthogonal frequency division multiplexing signal the method includes composing, on a per unit time basis, a plurality of carrier groups each composed of one or more subcarriers, assigning, on a per unit time basis, transmission data for a plurality of transmission destination terminals, to the plurality of carrier groups and transmitting the assigned transmission data.
摘要翻译： 一种用于发送正交频分多路复用信号的传输方法，包括：以每单位时间为基准构成由一个或多个子载波构成的多个载波组，以单位时间为基准分配多个 的发送目的地终端发送到多个载波组，并发送所分配的发送数据。
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77.发明申请PILOT SIGNAL TRANSMISSION TECHNIQUE AND DIGITAL COMMUNICATION SYSTEM USING SAME 审中-公开引导信号传输技术和数字通信系统公开(公告)号：US20080240289A1
公开(公告)日：2008-10-02
申请号：US12132817
申请日：2008-06-04
IPC分类号： H04L27/36
CPC分类号： H04L27/3455
摘要： In a digital communication system such as a mobile radio system, fading distortion is compensated with a raised precision. In a transmitter, pilot signals are regularly inserted in the information signals. The amplitude of the pilot signals are set larger than the maximum possible amplitude of the information signals. The modulation scheme of the pilot signals may be different from that of the information signals. In a receiver, the fading distortion of each of the pilot signals is determined. The fading distortions of the information signals are estimated by interpolation using the determined fading distortion of the pilot signal, and then compensated. The frequency band of each information signal is preferably limited with a roll-off filter with a roll-off coefficient ranging from 0.1 to 0.4.
摘要翻译： 在诸如移动无线电系统的数字通信系统中，以提高的精度补偿衰落失真。 在发射机中，导频信号被定期插入信息信号中。 导频信号的幅度被设定为大于信息信号的最大可能幅度。 导频信号的调制方式可能与信息信号的调制方式不同。 在接收机中，确定每个导频信号的衰落失真。 通过使用确定的导频信号的衰落失真的内插来估计信息信号的衰落失真，然后进行补偿。 每个信息信号的频带优选地通过具有从0.1到0.4的滚降系数的滚降滤波器来限制。
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公开(公告)号：US07420915B2
公开(公告)日：2008-09-02
申请号：US10486916
申请日：2002-08-22
IPC分类号： H04J11/00
CPC分类号： H04L5/0058 , H04B1/692 , H04L1/0001 , H04L1/0003 , H04L5/0007 , H04L5/0021 , H04L5/006 , H04L5/0064 , H04L5/0075 , H04L5/0092 , H04L27/0008 , H04L27/2601 , H04W72/0453
摘要： The invention performs orthogonal frequency division multiplex processing on a transmission signal to form an OFDM modulation signal (daubed in FIG.) and performs orthogonal frequency division multiplex processing and code division multiple access processing on a transmission signal to form an OFDM-CDM modulation signal (shaded in FIG.) to transmit the OFDM modulation signal and the OFDM-CDM modulation signal, which makes it possible to transmit data in a very high rate using the OFDM modulation signal while making it possible to transmit data in a higher quality using the OFDM-CDM modulation signal than using the OFDM—modulation signal, although it is slightly inferior to OFDM modulation in terms of high rate transmission.
摘要翻译： 本发明对传输信号进行正交频分复用处理以形成OFDM调制信号（在图中涂覆），并对传输信号执行正交频分复用处理和码分多址处理，以形成OFDM-CDM调制信号（ 发送OFDM调制信号和OFDM-CDM调制信号，这使得可以使用OFDM调制信号以非常高的速率发送数据，同时使得可以使用OFDM来传输更高质量的数据 -CDM调制信号比使用OFDM调制信号，尽管在高速率传输方面略逊于OFDM调制。
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公开(公告)号：US07359454B2
公开(公告)日：2008-04-15
申请号：US10781839
申请日：2004-02-20
CPC分类号： H04L7/04 , H04L7/06 , H04L27/0008 , H04L27/206 , H04L27/34 , H04L27/3405 , H04L27/3455 , H04L2027/0024 , H04L2027/0087 , H04L2027/0093
摘要： A digital wireless communication apparatus includes a first modulator that modulates a pilot symbol according to a first modulation scheme, and a second modulator that modulates specific symbols according to a second modulation scheme, the second modulation scheme being different than the first modulation scheme. A third modulator modulates symbols other than the pilot symbol and the specific symbols according to a third modulation scheme, the third modulation scheme being different than the first and second modulation schemes. A timing controller controls timing such that the specific symbols are inserted immediately before and after the pilot symbol. The signal points of the specific symbols are allocated on an imaginary line that connects the origin point and a signal point of the pilot symbol on a signal space diagram.
摘要翻译： 数字无线通信装置包括根据第一调制方案调制导频符号的第一调制器和根据第二调制方案调制特定符号的第二调制器，所述第二调制方案不同于第一调制方案。 第三调制器根据第三调制方案调制除导频符号和特定符号之外的符号，第三调制方案不同于第一和第二调制方案。 定时控制器控制定时，使得在导频符号之前和之后立即插入特定符号。 特定符号的信号点分配在连接信号空间图上的导频符号的原点和信号点的假想线上。
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公开(公告)号：US20060189279A1
公开(公告)日：2006-08-24
申请号：US10566682
申请日：2004-08-04
CPC分类号： H04L27/2649 , H04W52/42
摘要： A radio transmitting apparatus that has a plurality of antennas and changes the number of modulated signals transmitted simultaneously according to the propagation environment and so forth. A transmission power changing section 12 of a radio transmitting apparatus of the present invention adjusts the pilot symbol signal level so as to match the data symbol composite signal level according to the number of transmit modulated signals set by a modulated signal number setting section 11. By this means, the operating range of received pilot symbols and the operating range of received data symbols become approximately the same on the receiving side, enabling pilot symbol quantization error to be reduced. As a result, the precision of radio wave propagation environment estimation, time synchronization, and frequency offset estimation using pilot symbols improves, and consequently data reception quality improves.
摘要翻译： 具有多个天线的无线发送装置，根据传播环境等改变同时发送的调制信号的数量。 本发明的无线发送装置的发送功率变更部12根据由调制信号编号设定部11设定的发送调制信号的数量来调整导频符号信号电平，使其符合数据符号复合信号电平。 通过这种方式，接收侧的接收导频符号的工作范围和接收数据符号的工作范围在接收侧变得大致相同，能够降低导频符号量化误差。 结果，使用导频符号的无线电波传播环境估计，时间同步和频率偏移估计的精度提高，因此提高了数据接收质量。
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