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1. 发明专利

JP2009111982A Blind estimation method of ofdm modulation parameter 审中-公开
标题翻译： OFDM调制参数的盲估计方法
公开(公告)号：JP2009111982A
公开(公告)日：2009-05-21
申请号：JP2008229011
申请日：2008-09-05
申请人： Commiss Energ Atom , コミツサリアタレネルジーアトミーク
发明人： BOUZEGZI ABDELAZIZ , CIBLAT PHILIPPE , JALLON PIERRE
IPC分类号： H04J11/00
CPC分类号： H04L27/2662 , H04L27/2666 , H04L27/2676
摘要： PROBLEM TO BE SOLVED: To provide a blind estimation method of at least one temporal modulation parameter of an OFDM signal. SOLUTION: A plurality of demodulation attempts of an OFDM signal are carried out using a plurality of respective values of a temporal parameter and, for each demodulation attempt, a cost function representative of the entropy of the demodulated signal is calculated, the estimate of the temporal parameter then being obtained as the value of the parameter minimizing the cost function. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供OFDM信号的至少一个时间调制参数的盲估计方法。解决方案：使用时间参数的多个相应值来执行OFDM信号的多个解调尝试，并且对于每个解调尝试，计算表示解调信号的熵的代价函数，估计的时间参数，然后作为最小化成本函数的参数的值获得。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2009112020A Searching method of unused band for cognitive communication terminal 有权
标题翻译：用于认证通信终端的未使用带的搜索方法
公开(公告)号：JP2009112020A
公开(公告)日：2009-05-21
申请号：JP2008294925
申请日：2008-10-23
申请人： Commiss Energ Atom , コミツサリアタレネルジーアトミーク
发明人： JALLON PIERRE
IPC分类号： H04W16/14 , H04J11/00 , H04W88/06
CPC分类号： H04L5/023
摘要： PROBLEM TO BE SOLVED: To provide a method of quickly and effectively searching an unused band for a cognitive communication terminal. SOLUTION: The searching method of the unused band employs the cognitive communication terminal which functions within an area covered by a communication system of a first generation using a number of frequency bands B. The terminal classifies the bands as functions of usable conditional probability (p(b max ¾B occ , B opp )). The terminal starts its searching by the band having the most large conditional probability (b max ) after knowing a first aggregation of a band which is exclusively possessed by a communication system (B occ ) of the first generation and a second aggregation of a band which is not exclusively possessed by a communication system of the first generation though being already used by the other cognitive terminal (B opp ). COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种快速有效地搜索用于认知通信终端的未使用频带的方法。解决方案：未使用频带的搜索方法采用在第一代通信系统覆盖的区域内使用多个频带B起作用的认知通信终端。终端将频带分类为可用条件概率的函数（p（b max ¾B occ ，B opp ））。在知道由通信系统专门拥有的频带的第一次聚合之后，终端由具有最大条件概率（b max ）的频带开始搜索（B occ ）和第一代通信系统不是全部拥有的频带的第二聚合，但是已经被另一个认知终端（B opp ）使用。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2009290875A Method for detecting ofdm signal 有权
标题翻译：检测OFDM信号的方法
公开(公告)号：JP2009290875A
公开(公告)日：2009-12-10
申请号：JP2009131253
申请日：2009-05-29
申请人： Commiss Energ Atom , コミツサリアタレネルジーアトミーク
发明人： JALLON PIERRE
IPC分类号： H04J11/00
CPC分类号： H04L27/0012 , H04B1/1027 , H04J11/0066 , H04L27/2647
摘要： PROBLEM TO BE SOLVED: To improve reliability in OFDM signal detection.
SOLUTION: This relates to a method for detecting the presence of an OFDM signal in a received signal wherein the received signal is down converted into baseband and subjected to a passband filtering corresponding to a band of interest before being sampled. The thus sampled signal is subjected to a second filtering for eliminating at least one interfering wave in the band of interest. The presence of an OFDM signal is detected if the signal filtered by the second filtering is cyclostationary.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提高OFDM信号检测的可靠性。解决方案：这涉及一种用于在接收信号中检测OFDM信号的存在的方法，其中接收信号在被采样之前被下变频转换为基带并经受对应于感兴趣频段的通带滤波。对这样采样的信号进行第二滤波，以消除感兴趣的频带中的至少一个干扰波。如果由第二滤波滤波的信号是循环平稳的，则检测到OFDM信号的存在。版权所有（C）2010，JPO＆INPIT

4. 发明专利

JP2009010946A Cognitive radio terminal 有权
标题翻译：认知无线电终端
公开(公告)号：JP2009010946A
公开(公告)日：2009-01-15
申请号：JP2008141722
申请日：2008-05-29
申请人： Commiss Energ Atom , コミツサリアタレネルジーアトミーク
发明人： JALLON PIERRE
IPC分类号： H04W16/14 , H04W52/00 , H04W52/36 , H04W64/00 , H04W88/06
CPC分类号： H04W52/367 , H04L5/0037 , H04W16/14
摘要： PROBLEM TO BE SOLVED: To provide a method of determining frequency bands available for a cognitive radio terminal.
SOLUTION: A cognitive telecommunication terminal 300 is designed to coexist with a primary telecommunication system using a set (B) of transmission frequencies. The system includes a plurality of spatially distributed transmitters, each transmitter being suitable for transmitting within a coverage area in a plurality of frequency bands in the set allocated to the transmitter. The terminal includes: positioning means 310; a database 320 for storing information defining the coverage area for each transmitter; a calculation means 330 suitable for determining the maximum power that the terminal can transmit for each frequency band in the set, and for sorting frequency bands as a function of the maximum powers this obtained; and a transmission/reception means 340 suitable for detecting the presence of a signal in the frequency bands thus sorted, so as to begin with the frequency band associated with the highest maximum power.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种确定认知无线电终端可用频段的方法。认知通信终端300被设计为使用传输频率的集合（B）与主要电信系统共存。该系统包括多个空间分布的发射机，每个发射机适用于在分配给发射机的组中的多个频带内的覆盖区域内发射。终端包括：定位装置310; 数据库320，用于存储定义每个发射机的覆盖区域的信息; 适用于确定终端可以针对该组中的每个频带发送的最大功率的计算装置330，并且用于根据获得的最大功率来对频带进行排序; 以及适于检测这样分类的频带中的信号的存在的发送/接收装置340，以便以与最高最大功率相关联的频带开始。版权所有（C）2009，JPO＆INPIT

5. 发明专利

JP2008301495A Method for estimating characteristics of ofdm signal 有权
标题翻译： OFDM信号估计特性的方法
公开(公告)号：JP2008301495A
公开(公告)日：2008-12-11
申请号：JP2008143702
申请日：2008-05-30
申请人： Commiss Energ Atom , コミツサリアタレネルジーアトミーク
发明人： JALLON PIERRE
IPC分类号： H04J11/00
CPC分类号： H04L27/2647
摘要： PROBLEM TO BE SOLVED: To propose a method for determining whether or not an OFDM signal is present in a frequency band of interest with high reliability, even under low signal-to-noise ratio conditions.
SOLUTION: This invention relates to a method for determining at least one characteristic of an OFDM signal within a received signal, characterized in that: a plurality of cyclic correlation coefficients (ρκ/(α+β)(α)) for the received signal is calculated (420, 520) for a correlation time difference (α) and a plurality of cyclic frequencies (κ/(α+β)); a discrimination function is calculated (430, 530) as a function of the amplitude of the cyclic correlation coefficients; the OFDM signal characteristic is deduced (440, 561, 562) as a function of at least one value of the discrimination function.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：即使在低信噪比条件下，提出一种用于确定OFDM信号是否存在于高可靠性的感兴趣频带中的方法。解决方案：本发明涉及一种用于确定接收信号内的OFDM信号的至少一个特性的方法，其特征在于：对于所述接收信号，多个循环相关系数（ρκ/（α+β）（α））对于相关时间差（α）和多个循环频率（κ/（α+β）），计算接收信号（420,520）; 作为循环相关系数的幅度的函数计算鉴别函数（430,530）; 作为鉴别功能的至少一个值的函数，推导出OFDM信号特性（440,561,562）。版权所有（C）2009，JPO＆INPIT

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