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1. 发明专利

JP2014039091A Information transmission means and information transmission device 审中-公开
标题翻译：信息传输手段和信息传输设备
公开(公告)号：JP2014039091A
公开(公告)日：2014-02-27
申请号：JP2012179001
申请日：2012-08-10
申请人： Panasonic Corp , パナソニック株式会社
发明人： KOBATAKE HISATERU , HASEGAWA TERUAKI , SOGA SHIGERU , WATANABE KOUYA , MATSUMURA YOSHINAGA , JINNO IPPEI
IPC分类号： H04J11/00
摘要： PROBLEM TO BE SOLVED: To provide information transmission means capable of solving a problem in a digital transmission under outdoor environment, in which error correction is indispensable in view of changes in transmission path and increase of transmission characteristic; but when errors occur continuously like burst error, the correction capacity is exceeded; while the burst error can be dispersed by performing time-interleave; but since a large transmission time is required, the time-interleave is hardly used for two-way communication.SOLUTION: The information transmission means using quadrature modulation duplicates an identical data with a quadrature component and an in-phase component and rearranges the order of the data independently. With this, entire data can be received in a half time of conventional time. In wireless LAN, in which the transmission path is estimated using a preamble only, the durability of fading environment can be increased. Further, even when a maximum half data in the entire segments is subjected to noises like burst, since the entire data can be demodulated using a remaining data, the effect same as the time-interleave can be obtained ensuring stable reception.
摘要翻译：要解决的问题：提供能够解决在室外环境下的数字传输中的问题的信息传输装置，其中鉴于传输路径的变化和传输特性的增加，纠错是不可缺少的; 但当连续出现突发错误时，超过了校正容量; 而可以通过执行时间交织来分散突发错误; 但是由于需要较大的传输时间，所以时间交织几乎不用于双向通信。解决方案：使用正交调制的信息传输装置与正交分量和同相分量重复相同的数据，并重新排列数据独立。由此，可以在常规时间的一半时间内接收整个数据。在仅使用前导码估计传输路径的无线LAN中，可以提高衰落环境的耐久性。此外，即使当整个段中的最大一半数据遭受诸如突发的噪声时，由于可以使用剩余数据来解调整个数据，因此可以获得与时间交织相同的效果，从而确保稳定的接收。

2. 发明专利

JP2014127824A Receiver and frequency error correction method 有权
标题翻译：接收和频率误差校正方法
公开(公告)号：JP2014127824A
公开(公告)日：2014-07-07
申请号：JP2012282730
申请日：2012-12-26
申请人： Panasonic Corp , パナソニック株式会社
发明人： KOBATAKE HISATERU , JINNO IPPEI , MATSUMURA YOSHINAGA , HASEGAWA TERUAKI , SOGA SHIGERU , WATANABE KOUYA
IPC分类号： H04J11/00
CPC分类号： H04L27/2657 , H04B1/1018 , H04B1/1081 , H04L27/2675 , H04L27/2691 , H04W56/005
摘要： PROBLEM TO BE SOLVED: To improve the detection accuracy of a carrier frequency error by reducing a noise influence even in an environment having a strong noise influence.SOLUTION: A filtering unit 151 inputs a reception signal including a short preamble (STF) in which a plurality of pilot subcarriers are disposed intermittently in a frequency domain and repetitively in a time domain, to attenuate a frequency component between two pilot subcarriers respectively adjacent in the frequency domain among the plurality of pilot subcarriers. A correction unit 154 corrects the carrier frequency error of the reception signal on the basis of the signals of the plurality of pilot subcarriers passing through the filtering unit 151.
摘要翻译：要解决的问题：即使在具有强噪声影响的环境中也可以通过降低噪声影响来提高载波频率误差的检测精度。解决方案：滤波单元151输入包括短前导码（STF）的接收信号，其中多个导频子载波在频域中间歇地设置并且在时域中重复地，以衰减在多个导频子载波之中频率分别相邻的两个导频子载波之间的频率分量。校正单元154基于通过滤波单元151的多个导频子载波的信号来校正接收信号的载波频率误差。

3. 发明专利

JP2014127823A Reception device and frequency selectivity interference correction method 有权
标题翻译：接收设备和频率选择性干扰校正方法
公开(公告)号：JP2014127823A
公开(公告)日：2014-07-07
申请号：JP2012282724
申请日：2012-12-26
申请人： Panasonic Corp , パナソニック株式会社
发明人： SOGA SHIGERU , HASEGAWA TERUAKI , JINNO IPPEI , MATSUMURA YOSHINAGA , KOBATAKE HISATERU , WATANABE KOUYA
IPC分类号： H04J11/00 , H03M13/45
CPC分类号： H04L25/03821 , H03M13/00 , H03M13/45 , H03M13/6527 , H04L1/0047 , H04L5/0007 , H04L5/0048 , H04L25/067 , H04L27/2613 , H04L27/2647
摘要： PROBLEM TO BE SOLVED: To reduce deterioration in reception performance caused by influence of frequency selectivity interference caused by leakage power from an adjacent channel.SOLUTION: An OFDM reception device 100 receives a signal including an STF having a plurality of pilot sub-carriers and a plurality of null sub-carriers alternately allocated at a predetermined frequency interval in a transmission band and a data part that is time-multiplexed with the STF. The OFDM reception device 100 comprises: a null carrier extraction unit 151 for extracting signals having a plurality of null sub-carrier frequencies from a received signal; a power calculation unit 152 for detecting each interference level of a plurality of sub-carriers in the transmission band, on the basis of levels of the extracted signals; a soft determination unit 112 for performing soft determination on a demodulation signal in a received data part, by using reliability of the plurality of sub-carriers calculated on the basis of the detected interference levels; and an error correction unit 113 for restoring data by performing error correction on the basis of a result of the soft determination by the soft determination unit 112.
摘要翻译：要解决的问题：减少由相邻信道的泄漏功率引起的频率选择性干扰的影响引起的接收性能的劣化。解决方案：OFDM接收装置100接收包括具有多个导频子载波的STF的信号，以及在传输频带中以预定频率间隔交替分配的多个空子载波和与STF时间复用的数据部分。 OFDM接收装置100包括：零载波提取单元151，用于从接收信号中提取具有多个零子载波频率的信号; 功率计算单元152，用于基于所提取的信号的电平来检测传输频带中的多个子载波的每个干扰电平; 软确定单元112，用于通过使用基于检测到的干扰电平计算出的多个副载波的可靠性来对接收到的数据部分中的解调信号进行软判定; 以及用于通过基于软判定单元112的软判定结果执行纠错来恢复数据的纠错单元113。

4. 发明专利

JP2014039090A Data transmission method, communication method and data receiving device 审中-公开
标题翻译：数据传输方法，通信方法和数据接收装置
公开(公告)号：JP2014039090A
公开(公告)日：2014-02-27
申请号：JP2012179000
申请日：2012-08-10
申请人： Panasonic Corp , パナソニック株式会社
发明人： SOGA SHIGERU , HASEGAWA TERUAKI , JINNO IPPEI , MATSUMURA YOSHINAGA , WATANABE KOUYA , KOBATAKE HISATERU
IPC分类号： H04J11/00 , H04J99/00 , H04W56/00
摘要： PROBLEM TO BE SOLVED: To provide a data transmission method, a communication method and a data receiving device used in a transmission apparatus transmitting and receiving a signal, the signal having, at the top, a packet configuration using an OFDM system in which a synchronization preamble is time-division multiplexed, capable of reducing deterioration of the frequency synchronization under an environment of frequency selective multipath phasing without reducing the transmission efficiency.SOLUTION: The transmission device forms a short preamble using sub-carriers which has a constant interval between the sub-carriers in plural sub-carriers including predetermined frequency intervals which are orthogonal to each other. The transmission device prepares a short preamble pattern according to the interval between the plural sub-carriers to perform time-division multiplex to transmit the same as a synchronization preamble. The receiving device estimates a frequency error using a correlation of the short preamble pattern according the interval between the plural sub-carriers to correct the received signal on the basis of the estimated frequency error.
摘要翻译：要解决的问题：为了提供在发送和接收信号的传输装置中使用的数据传输方法，通信方法和数据接收装置，该信号在顶部具有使用OFDM系统的分组配置，其中同步前同步码是时分复用的，能够在不降低传输效率的情况下减少频率选择性多径定相环境下的频率同步的恶化。解决方案：传输设备使用子载波形成短前导码，子载波在子载波之间具有恒定的间隔 - 包括彼此正交的预定频率间隔的多个子载波中的载波。传输设备根据多个子载波之间的间隔准备短的前导码模式，以执行时分多路复用以将其作为同步前同步码进行发送。接收装置使用根据多个子载波之间的间隔的短前导码模式的相关性来估计频率误差，以基于估计的频率误差来校正接收的信号。

5. 发明专利

JP2014039089A Ofdm transmission device, ofdm transmission method, ofdm receiving device and ofdm receiving method 审中-公开
标题翻译： OFDM传输设备，OFDM传输方法，OFDM接收设备和OFDM接收方法
公开(公告)号：JP2014039089A
公开(公告)日：2014-02-27
申请号：JP2012178999
申请日：2012-08-10
申请人： Panasonic Corp , パナソニック株式会社
发明人： MATSUMURA YOSHINAGA , JINNO IPPEI , HASEGAWA TERUAKI , SOGA SHIGERU , WATANABE KOUYA , KOBATAKE HISATERU
IPC分类号： H04J11/00
摘要： PROBLEM TO BE SOLVED: To provide an OFDM transmission device, an OFDM transmission method, an OFDM receiving device and an OFDM receiving method capable of optimally exhibit the frequency diversity effect in a case a disturbance power from neighboring channels is included to increase the durability against the disturbance from neighboring channels ensuring in a stable reception.SOLUTION: An identical data group is transmitted N times (N is an integer larger than 2). At least one time in the N times, the position of a BPSK or QAM modulated signal to be allocated to a sub-carrier is allocated to at least a position where is allocated in any time in the remaining N-1 times with respect to a center sub-carrier in an inverted order.
摘要翻译：要解决的问题：提供一种OFDM传输装置，OFDM传输方法，OFDM接收装置和OFDM接收方法，其能够在包括来自相邻信道的干扰功率的情况下最佳地表现出频率分集效应，以增加对来自相邻信道的干扰确保了稳定的接收。解决方案：相同的数据组发送N次（N是大于2的整数）。在N次中至少一次，将要分配给副载波的BPSK或QAM调制信号的位置分配给至少一个相对于a的剩余N-1次在任何时间分配的位置中心副载波以倒序排列。

6. 发明专利

JP2014039088A Radio communication device 审中-公开
标题翻译：无线电通信设备
公开(公告)号：JP2014039088A
公开(公告)日：2014-02-27
申请号：JP2012178998
申请日：2012-08-10
申请人： Panasonic Corp , パナソニック株式会社
发明人： HASEGAWA TERUAKI , SOGA SHIGERU , WATANABE KOUYA , MATSUMURA YOSHINAGA , KOBATAKE HISATERU , JINNO IPPEI
IPC分类号： H04J11/00 , H04B7/02 , H04W72/04
摘要： PROBLEM TO BE SOLVED: To solve problems in a communication system that performs repetitive transmission by OFDM symbols and is able to transmit and receive in a low C/N state and in which when repetitive transmission is performed, accuracy is deteriorated because the number of pilot signals allocated to a subcarrier is few and phase correction may not be performed because at the time of long distance transmission there is a possibility that a pilot signal may disappear due to an influence of multi-path or fading.SOLUTION: A transmission format is formed by surely inserting a repetition signal (copy data symbol) into OFDM symbols at the time of repetitive transmission such that the repetition signal is inserted into half the number of OFDM subcarriers excluding a pilot signal. This transmission format enables obtaining variation among OFDM symbols without adding a pilot signal and the like in reception processing.
摘要翻译：要解决的问题：为了解决通过OFDM符号执行重复发送的通信系统中的问题，并且能够以低C / N状态进行发送和接收，并且其中当执行重复发送时，由于导频的数量分配给子载波的信号很少，并且可能不执行相位校正，因为在长距离传输时，导致信号可能由于多径或衰落的影响而消失。解决方案：形成传输格式通过在重复发送时肯定地将重复信号（复制数据符号）插入到OFDM符号中，使得重复信号被插入除了导频信号之外的OFDM子载波的数量的一半。该发送格式能够在接收处理中不添加导频信号等而获得OFDM符号之间的变动。

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