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公开(公告)号：CN103947123A
公开(公告)日：2014-07-23
申请号：CN201180074920.2
申请日：2011-11-16
Applicant: 飞思卡尔半导体公司
IPC: H04B1/7073
CPC classification number: H04B1/709 , H04B1/7075 , H04B7/0802 , H04B2201/707
Abstract: 本发明描述了一种直接序列扩展频谱(DSSS)信号接收设备(10)。所述设备(10)可能包括接收器单元(22)、码片序列生成单元(44)、相关性单元(28)和比较单元(38)。所述接收器单元(22)可能在检测阶段从射频信号中提取码片流，所述码片流包括第一码片序列。所述码片序列生成单元(44)可能在所述检测阶段基于第一试验码片序列和基于多个索引循环过程来生成所述多个试验码片序列，每个试验码片序列相对于所述第一试验码片序列被索引循环了一个所述索引循环过程。所述相关性单元(28)可能在所述检测阶段基于所述多个试验码片序列和所述第一码片序列确定多个相关性值，每个所述相关性值指明在相应一个的所述试验码片序列和所述第一码片序列之间的相关性程度。所述比较单元(38)可能在所述检测阶段确定所述相关性值的最大一个是否超过确定的阈值。还描述了一种方法。
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公开(公告)号：CN103947123B
公开(公告)日：2016-07-06
申请号：CN201180074920.2
申请日：2011-11-16
Applicant: 飞思卡尔半导体公司
IPC: H04B1/7073
CPC classification number: H04B1/709 , H04B1/7075 , H04B7/0802 , H04B2201/707
Abstract: 描述了一种直接序列扩展频谱信号接收设备。设备可能包括接收器单元、码片序列生成单元、相关性单元和比较单元。接收器单元可能在检测阶段从射频信号中提取码片流，码片流包括第一码片序列。码片序列生成单元可能在检测阶段基于第一试验码片序列和基于多个索引循环过程来生成多个试验码片序列，每个试验码片序列相对于第一试验码片序列被索引循环了一个索引循环过程。相关性单元可能在检测阶段基于多个试验码片序列和第一码片序列确定多个相关性值，每个相关性值指明在相应一个的试验码片序列和第一码片序列之间的相关性程度。比较单元可能在检测阶段确定相关性值的最大一个是否超过确定的阈值。还描述了一种方法。
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公开(公告)号：CN102696209B
公开(公告)日：2015-06-03
申请号：CN201080060993.1
申请日：2010-01-08
Applicant: 富士通株式会社
IPC: H04L27/26
CPC classification number: H04J13/18 , H04B1/707 , H04B2201/707 , H04J13/004 , H04J13/0062 , H04J13/12 , H04J13/14 , H04L5/0016 , H04L5/0048 , H04L5/0051 , H04L27/2613
Abstract: 本发明涉及正交掩码生成装置、解调参考信号生成装置和方法。该解调参考信号生成器包括：非相关序列生成器，生成用于第一资源块的解调参考信号用非相关序列；第一扩频单元，用第一组正交掩码对解调参考信号用非相关序列中将映射到第一资源块的第一频率资源的元素进行扩频；第二扩频单元，用第二组正交掩码对解调参考信号用非相关序列中将映射到第一资源块的第二频率资源的元素进行扩频；第二频率资源与第一频率资源是第一资源块中用于解调参考信号发送的频率资源元素中的相邻频率资源，第二组码与第一组码互为列镜像；以及映射单元，用于将经扩频后的元素分别映射到第一和第二频率资源上。本发明的方法与装置可增加导频的随机化，克服导频发送功率不平衡的问题，满足时频两维的正交性需求。
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公开(公告)号：CN102696209A
公开(公告)日：2012-09-26
申请号：CN201080060993.1
申请日：2010-01-08
Applicant: 富士通株式会社
IPC: H04L27/26
CPC classification number: H04J13/18 , H04B1/707 , H04B2201/707 , H04J13/004 , H04J13/0062 , H04J13/12 , H04J13/14 , H04L5/0016 , H04L5/0048 , H04L5/0051 , H04L27/2613
Abstract: 本发明涉及正交掩码生成装置、解调参考信号生成装置和方法。该解调参考信号生成器包括：非相关序列生成器，生成用于第一资源块的导频用非相关序列；第一扩频单元，用第一组正交掩码对导频用非相关序列中将映射到第一资源块的第一频率资源的元素进行扩频；第二扩频单元，用第二组正交掩码对导频用非相关序列中将映射到第一资源块的第二频率资源的元素进行扩频；第二频率资源与第一频率资源是针对第一组数据流的相邻频率资源，第二组正交掩码与第一组正交掩码互为列镜像；以及映射单元，用于将经扩频后的元素分别映射到第一和第二频率资源上。本发明的方法与装置可增加导频的随机化，克服导频发送功率不平衡的问题，满足时频两维的正交性需求。
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公开(公告)号：US09813108B2
公开(公告)日：2017-11-07
申请号：US15160187
申请日：2016-05-20
Inventor： Keun Hong Chae , Seok Ho Yoon
IPC: H04B1/707 , H04B1/7085 , H04B1/7075 , G01S19/30
CPC classification number: H04B1/7085 , G01S19/30 , H04B1/70752 , H04B2001/70706 , H04B2201/707
Abstract: A method of generating a BOC correlation function based on partial correlation functions, an apparatus for tracking a BOC signal, and a spread spectrum signal receiver system using the same are disclosed herein. The apparatus includes a frequency offset compensation unit, a local code generation unit, a mixer, a delay lock loop (DLL), a phase lock loop (PLL), and a data extraction unit. The frequency offset compensation unit outputs a compensated received signal with respect to a received signal. The local code generation unit generates a delay-compensated local code based on a code delay value. The mixer mixes the delay-compensated local code with the frequency offset-compensated received signal. The DLL repeatedly tracks and calculates a code delay value. The PLL repeatedly calculates a carrier frequency compensation value. The data extraction unit extracts spreading data from a mixture of the delay-compensated local code and the compensated received signal.
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Patent Agency Ranking6.发明公开APPARATUS FOR GENERATING ORTHOGONAL MASK, AND APPARATUS AND METHOD FOR GENERATING DEMODULATION REFERENCE SIGNAL 有权装置，用于产生正交MASK以及设备和方法用于产生信号DEMODULIERUNGS参考
公开(公告)号：EP2523413A4
公开(公告)日：2015-12-30
申请号：EP10841887
申请日：2010-01-08
Applicant: FUJITSU LTD
Inventor： WANG YI , ZHANG YUANTAO , ZHOU HUA , WU JIANMING
CPC classification number: H04J13/18 , H04B1/707 , H04B2201/707 , H04J13/004 , H04J13/0062 , H04J13/12 , H04J13/14 , H04L5/0016 , H04L5/0048 , H04L5/0051 , H04L27/2613
Abstract: The present invention relates to orthogonal cover code generating apparatus, demodulation reference signal generating apparatus, and methods thereof. The demodulation reference signal generator comprises a non-correlation sequence generator configured to generate a non-correlation sequence for pilot of a first resource block; a first spectrum spreading unit configured to spread spectrums of elements in the non-correlation sequence for pilot to be mapped to a first frequency resource of the first resource block, by using a first group of Orthogonal Cover Codes (OCCs); a second spectrum spreading unit configured to spread spectrums of elements in the non-correlation sequence for pilot to be mapped to a second frequency resource of the first resource block, by using a second group of OCCs; the first and second frequency resources are adjacent frequency resources with respect to a first group of data streams, and the first and second groups of OCCs are mirrors in column to each other; and a mapping unit configured to map the spectrum-spread elements to the first and second frequency resources, respectively. The methods and apparatuses according to the present invention can enhance pilot randomization, remove the problem of pilot transmission power imbalance, and satisfy the requirement on orthogonality at the two dimensions of both time and frequency.
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7.发明公开DIRECT SEQUENCE SPREAD SPECTRUM SIGNAL RECEIVING DEVICE AND METHOD 审中-公开直接序列的装置和方法，用于接收SPREITZSPEKTRUMSIGNALS
公开(公告)号：EP2781031A4
公开(公告)日：2015-07-22
申请号：EP11875670
申请日：2011-11-16
Applicant: FREESCALE SEMICONDUCTOR INC
Inventor： GACH ROBERT , DELBECQ DOMINIQUE
IPC: H04B1/7075 , H04B1/16 , H04B7/08
CPC classification number: H04B1/709 , H04B1/7075 , H04B7/0802 , H04B2201/707
Abstract: A direct-sequence spread spectrum signal receiving device may comprise a receiver unit, a chip sequence generating unit, a correlation unit, and comparison unit. The receiver unit may extract a chip stream from a radio-frequency signal, said chip stream containing a first chip sequence. The chip sequence generating unit may generate a plurality of trial chip sequences on the basis of a first trial chip sequence and on the basis of a plurality of index rotations. The correlation unit may determine a plurality of correlation values on the basis of said plurality of trial chip sequences and on the basis of said first chip sequence, each of said correlation values indicating a degree of correlation between a respective one of said trial chip sequences and said first chip sequence. The comparison unit may determine whether a maximum one of said correlation values exceeds a defined threshold value.
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8.发明授权APPARATUS FOR GENERATING ORTHOGONAL MASK, AND APPARATUS AND METHOD FOR GENERATING DEMODULATION REFERENCE SIGNAL 有权用于生成正交掩模的设备以及用于生成解调参考信号的装置和方法
公开(公告)号：EP2523413B1
公开(公告)日：2018-04-04
申请号：EP10841887.2
申请日：2010-01-08
Applicant: Fujitsu Limited
Inventor： WANG, Yi , ZHANG, Yuantao , ZHOU, Hua , WU, Jianming
CPC classification number: H04J13/18 , H04B1/707 , H04B2201/707 , H04J13/004 , H04J13/0062 , H04J13/12 , H04J13/14 , H04L5/0016 , H04L5/0048 , H04L5/0051 , H04L27/2613
Abstract: The present invention relates to orthogonal cover code generating apparatus, demodulation reference signal generating apparatus, and methods thereof. The demodulation reference signal generator comprises a non-correlation sequence generator configured to generate a non-correlation sequence for pilot of a first resource block; a first spectrum spreading unit configured to spread spectrums of elements in the non-correlation sequence for pilot to be mapped to a first frequency resource of the first resource block, by using a first group of Orthogonal Cover Codes (OCCs); a second spectrum spreading unit configured to spread spectrums of elements in the non-correlation sequence for pilot to be mapped to a second frequency resource of the first resource block, by using a second group of OCCs; the first and second frequency resources are adjacent frequency resources with respect to a first group of data streams, and the first and second groups of OCCs are mirrors in column to each other; and a mapping unit configured to map the spectrum-spread elements to the first and second frequency resources, respectively. The methods and apparatuses according to the present invention can enhance pilot randomization, remove the problem of pilot transmission power imbalance, and satisfy the requirement on orthogonality at the two dimensions of both time and frequency.
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公开(公告)号：US09461767B2
公开(公告)日：2016-10-04
申请号：US14309260
申请日：2014-06-19
Applicant: FUJITSU LIMITED
Inventor： Yi Wang , Yuantao Zhang , Hua Zhou , Jianming Wu
CPC classification number: H04J13/18 , H04B1/707 , H04B2201/707 , H04J13/004 , H04J13/0062 , H04J13/12 , H04J13/14 , H04L5/0016 , H04L5/0048 , H04L5/0051 , H04L27/2613
Abstract: A code generating apparatus, demodulation reference signal generating apparatus, and methods thereof. The demodulation reference signal generator includes generating a non-correlation sequence for RS of a first resource block; spreading spectrums of elements in the non-correlation sequence for RS to be mapped to a first frequency resource of the first resource block, by using a first group of codes; second spreading spectrums of elements in the non-correlation sequence for RS to be mapped to a second frequency resource of the first resource block, by using a second group of Codes; the first and second frequency resources are adjacent frequency resources in frequency resource elements used for RS transmission in the first resource block, and the first and second groups of Codes are mirrors in column to each other; and mapping the spectrum-spread elements to the first and second frequency resources, respectively.
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公开(公告)号：US20160269073A1
公开(公告)日：2016-09-15
申请号：US15160187
申请日：2016-05-20
Inventor： Keun Hong CHAE , Seok Ho YOON
IPC: H04B1/7085 , H04B1/7075
CPC classification number: H04B1/7085 , G01S19/30 , H04B1/70752 , H04B2001/70706 , H04B2201/707
Abstract: A method of generating a BOC correlation function based on partial correlation functions, an apparatus for tracking a BOC signal, and a spread spectrum signal receiver system using the same are disclosed herein. The apparatus includes a frequency offset compensation unit, a local code generation unit, a mixer, a delay lock loop (DLL), a phase lock loop (PLL), and a data extraction unit. The frequency offset compensation unit outputs a compensated received signal with respect to a received signal. The local code generation unit generates a delay-compensated local code based on a code delay value. The mixer mixes the delay-compensated local code with the frequency offset-compensated received signal. The DLL repeatedly tracks and calculates a code delay value. The PLL repeatedly calculates a carrier frequency compensation value. The data extraction unit extracts spreading data from a mixture of the delay-compensated local code and the compensated received signal.
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