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1. 发明申请

US20110164568A1 FFT-SIZE DETECTOR AND FFT-SIZE DETECTION METHOD AND CELL SEARCH APPARATUS AND CELL SEARCH METHOD IN CELLULAR SYSTEM 有权
标题翻译： FFT大小检测器和细胞检测方法和细胞搜索装置和细胞检索方法
公开(公告)号：US20110164568A1
公开(公告)日：2011-07-07
申请号：US13049424
申请日：2011-03-16
申请人： Huei-Jin LIN , Wei Ping Chuang , Jiun-Yo Lai , Pang-An Ting
发明人： Huei-Jin LIN , Wei Ping Chuang , Jiun-Yo Lai , Pang-An Ting
IPC分类号： H04W48/16
CPC分类号： H04L27/2655 , H04J11/0069 , H04L27/2666
摘要： An apparatus and method for cell acquisition and downlink synchronization acquisition in an OFDMA wireless communication system are provided. In an SS apparatus in a broadband wireless communication system, a preamble subcarrier acquirer extracts subcarrier values having a preamble code from an FFT signal. A multiplier code-demodulates the subcarrier values by multiplying the subcarrier values by a preamble code. A correlator calculates a plurality of differential correlations in the code-demodulated signal. An IFFT processor IFFT-processes the differential correlations by mapping the differential correlations to subcarriers. A maximum value detector detects a maximum value from the IFFT signal and calculates a timing offset using an IFFT output index having the maximum value.
摘要翻译：提供了一种在OFDMA无线通信系统中用于小区获取和下行链路同步捕获的装置和方法。在宽带无线通信系统的SS装置中，前导子载波采集器从FFT信号中提取具有前导码的子载波值。乘法器通过将子载波值乘以前导码来解码副载波值。相关器在码解调信号中计算多个差分相关。 IFFT处理器IFFT通过将差分相关映射到子载波来处理差分相关。最大值检测器从IFFT信号检测最大值，并使用具有最大值的IFFT输出索引来计算定时偏移。

2. 发明申请

US20080260085A1 Method and device for estimating integer carrier frequency offset 有权
标题翻译：用于估计整数载波频率偏移的方法和装置
公开(公告)号：US20080260085A1
公开(公告)日：2008-10-23
申请号：US11808207
申请日：2007-06-07
申请人： Huei-Jin Lin , Wei Ping Chuang , Jiun-Yo Lai , Pang-An Ting
发明人： Huei-Jin Lin , Wei Ping Chuang , Jiun-Yo Lai , Pang-An Ting
IPC分类号： H04L7/04
CPC分类号： H04L27/2675 , H04L27/2659
摘要： The method disclosed in the invention comprises setting a plurality of subcarrier position hypotheses for a received preamble according to a plurality of ideal subcarrier positions and the maximum amount of integer carrier frequency offset (ICFO), generating a plurality of preamble pattern hypotheses by retrieving the received preamble according to the subcarrier position hypotheses, calculating the correlation between the preamble pattern hypotheses and a plurality of specified preamble patterns, determining to which sector the received preamble belongs according to a correct preamble pattern, the specified preamble pattern having the highest correlation with the preamble pattern hypotheses, obtaining a correct subcarrier position according to the sector to which the received preamble belongs; and estimating the ICFO by calculating the offset between the correct subcarrier position and the subcarrier position hypothesis of the preamble pattern hypothesis having the highest correlation with the correct preamble pattern.
摘要翻译：本发明公开的方法包括根据多个理想子载波位置和最大量的整数载波频率偏移（ICFO）设置接收到的前同步码的多个子载波位置假设，通过检索所接收的前导码模式假设来生成多个前导码模式假设根据子载波位置假设的前导码，计算前导码模式假设与多个指定的前导码模式之间的相关性，根据正确的前导码模式确定接收到的前导码属于哪个扇区，与前导码具有最高相关性的指定前导码模式模式假设，根据所接收的前置码所属的扇区获得正确的副载波位置; 以及通过计算与正确前导码模式具有最高相关性的前导码模式假设的正确子载波位置与子载波位置假设之间的偏移来估计ICFO。

3. 发明申请

US20080310525A1 FFT-size detector and FFT-size detection method and cell search apparatus and cell search method in cellular system 有权
标题翻译： FFT大小检测器和FFT大小检测方法以及蜂窝系统中的小区搜索装置和小区搜索方法
公开(公告)号：US20080310525A1
公开(公告)日：2008-12-18
申请号：US11812046
申请日：2007-06-14
申请人： Huei-Jin Lin , Wei Ping Chuang , Jiun-Yo Lai , Pang-An Ting
发明人： Huei-Jin Lin , Wei Ping Chuang , Jiun-Yo Lai , Pang-An Ting
IPC分类号： H04L27/28
CPC分类号： H04L27/2655 , H04J11/0069 , H04L27/2666
摘要： An apparatus and method for cell acquisition and downlink synchronization acquisition in an OFDMA wireless communication system are provided. In an SS apparatus in a broadband wireless communication system, a preamble subcarrier acquirer extracts subcarrier values having a preamble code from an FFT signal. A multiplier code-demodulates the subcarrier values by multiplying the subcarrier values by a preamble code. A correlator calculates a plurality of differential correlations in the code-demodulated signal. An IFFT processor IFFT-processes the differential correlations by mapping the differential correlations to subcarriers. A maximum value detector detects a maximum value from the IFFT signal and calculates a timing offset using an IFFT output index having the maximum value.
摘要翻译：提供了一种在OFDMA无线通信系统中用于小区获取和下行链路同步捕获的装置和方法。在宽带无线通信系统的SS装置中，前导子载波采集器从FFT信号中提取具有前导码的子载波值。乘法器通过将子载波值乘以前导码来解码副载波值。相关器在码解调信号中计算多个差分相关。 IFFT处理器IFFT通过将差分相关映射到子载波来处理差分相关。最大值检测器从IFFT信号检测最大值，并使用具有最大值的IFFT输出索引来计算定时偏移。

4. 发明授权

US08116806B2 FFT-size detection and cell search for a cellular communication system 有权
标题翻译：蜂窝通信系统的FFT大小检测和小区搜索
公开(公告)号：US08116806B2
公开(公告)日：2012-02-14
申请号：US13049424
申请日：2011-03-16
申请人： Huei-Jin Lin , Wei Ping Chuang , Jiun-Yo Lai , Pang-An Ting
发明人： Huei-Jin Lin , Wei Ping Chuang , Jiun-Yo Lai , Pang-An Ting
IPC分类号： H04W24/00 , H04W4/00 , H04M3/00 , H04B17/00 , H04J3/06
CPC分类号： H04L27/2655 , H04J11/0069 , H04L27/2666
摘要： An apparatus and method for cell acquisition and downlink synchronization acquisition in an OFDMA wireless communication system are provided. In an SS apparatus in a broadband wireless communication system, a preamble subcarrier acquirer extracts subcarrier values having a preamble code from an FFT signal. A multiplier code-demodulates the subcarrier values by multiplying the subcarrier values by a preamble code. A correlator calculates a plurality of differential correlations in the code-demodulated signal. An IFFT processor IFFT-processes the differential correlations by mapping the differential correlations to subcarriers. A maximum value detector detects a maximum value from the IFFT signal and calculates a timing offset using an IFFT output index having the maximum value.
摘要翻译：提供了一种在OFDMA无线通信系统中用于小区获取和下行链路同步捕获的装置和方法。在宽带无线通信系统的SS装置中，前导子载波采集器从FFT信号中提取具有前导码的子载波值。乘法器通过将子载波值乘以前导码来解码副载波值。相关器在码解调信号中计算多个差分相关。 IFFT处理器IFFT通过将差分相关映射到子载波来处理差分相关。最大值检测器从IFFT信号检测最大值，并使用具有最大值的IFFT输出索引来计算定时偏移。

5. 发明授权

US07933239B2 FFT-size detector and FFT-size detection method and cell search apparatus and cell search method in cellular system 有权
标题翻译： FFT大小检测器和FFT大小检测方法以及蜂窝系统中的小区搜索装置和小区搜索方法
公开(公告)号：US07933239B2
公开(公告)日：2011-04-26
申请号：US11812046
申请日：2007-06-14
申请人： Huei-Jin Lin , Wei Ping Chuang , Jiun-Yo Lai , Pang-An Ting
发明人： Huei-Jin Lin , Wei Ping Chuang , Jiun-Yo Lai , Pang-An Ting
IPC分类号： H04B7/00 , H04B7/208 , H04W4/00 , H04J1/00 , H04J3/06
CPC分类号： H04L27/2655 , H04J11/0069 , H04L27/2666
摘要： The invention provides an FFT-size detection method and system and a cell search method and system based on FFT-size detection, and more particularly to a cell search method based on FFT-size detection in cellular system. The cell search method utilizes two frames to correctly detect the actual cell ID. The cell search method uses the first frame to detect the actual FFT size of a received signal. When the FFT size is determined, the cell search method use the second frame to detect the cell ID of a base station outputting the received signal based on the FFT size.
摘要翻译：本发明提供了一种基于FFT大小检测的FFT大小检测方法和系统以及小区搜索方法和系统，更具体地，涉及一种基于蜂窝系统中的FFT大小检测的小区搜索方法。小区搜索方法利用两帧来正确地检测实际的小区ID。小区搜索方法使用第一帧来检测接收信号的实际FFT大小。当确定FFT大小时，小区搜索方法使用第二帧来基于FFT大小来检测输出接收信号的基站的小区ID。

6. 发明授权

US07894539B2 Method and device for estimating integer carrier frequency offset 有权
标题翻译：用于估计整数载波频率偏移的方法和装置
公开(公告)号：US07894539B2
公开(公告)日：2011-02-22
申请号：US11808207
申请日：2007-06-07
申请人： Huei-Jin Lin , Wei Ping Chuang , Jiun-Yo Lai , Pang-An Ting
发明人： Huei-Jin Lin , Wei Ping Chuang , Jiun-Yo Lai , Pang-An Ting
IPC分类号： H04L7/04
CPC分类号： H04L27/2675 , H04L27/2659
摘要： The method disclosed in the invention comprises setting a plurality of subcarrier position hypotheses for a received preamble according to a plurality of ideal subcarrier positions and the maximum amount of integer carrier frequency offset (ICFO), generating a plurality of preamble pattern hypotheses by retrieving the received preamble according to the subcarrier position hypotheses, calculating the correlation between the preamble pattern hypotheses and a plurality of specified preamble patterns, determining to which sector the received preamble belongs according to a correct preamble pattern, the specified preamble pattern having the highest correlation with the preamble pattern hypotheses, obtaining a correct subcarrier position according to the sector to which the received preamble belongs; and estimating the ICFO by calculating the offset between the correct subcarrier position and the subcarrier position hypothesis of the preamble pattern hypothesis having the highest correlation with the correct preamble pattern.
摘要翻译：本发明公开的方法包括根据多个理想子载波位置和最大量的整数载波频率偏移（ICFO）设置接收到的前同步码的多个子载波位置假设，通过检索所接收的前导码模式假设来生成多个前导码模式假设根据子载波位置假设的前导码，计算前导码模式假设与多个指定的前导码模式之间的相关性，根据正确的前导码模式确定接收到的前导码属于哪个扇区，与前导码具有最高相关性的指定前导码模式模式假设，根据所接收的前置码所属的扇区获得正确的副载波位置; 以及通过计算与正确前导码模式具有最高相关性的前导码模式假设的正确子载波位置与子载波位置假设之间的偏移来估计ICFO。

7. 发明申请

US20090180559A1 WIRELESS TRANSMISSION SYSTEM, RECEIVER THEREOF, AND METHOD FOR REMOVING INTER-CARRIER INTERFERENCE THEREOF 有权
标题翻译：无线传输系统，接收机及其移动干扰的方法
公开(公告)号：US20090180559A1
公开(公告)日：2009-07-16
申请号：US12243090
申请日：2008-10-01
申请人： Jen-Yuan Hsu , Lai-Huei Wang , Jiun-Yo Lai , Pang-An Ting
发明人： Jen-Yuan Hsu , Lai-Huei Wang , Jiun-Yo Lai , Pang-An Ting
IPC分类号： H04L27/28 , H04B1/10
CPC分类号： H04L27/2647 , H04L5/0007 , H04L5/0023 , H04L25/0212 , H04L25/0222 , H04L25/0226 , H04L25/0228 , H04L27/2607 , H04L27/2657 , H04L27/2662
摘要： A method for removing ICI for a received symbol is provided. Firstly, a transmitted symbol is received via a wireless channel within a symbol time so as to obtain the received symbol. The transmitted symbol includes P identical original partial data, wherein P is a positive integer larger than 1. The received symbol includes P received partial data corresponding to the original partial data, respectively. Next, on a time domain at least two of the P received partial data are copied so as to obtain at least two copied partial data. Each copied partial data includes P copies of its corresponding received partial data. After that, an estimated ICI of the time domain is determined according to the product of a predetermined constant array and the difference between the copied partial data. Afterwards, the estimated ICI is subtracted from the received symbol so as to obtain an output symbol.
摘要翻译：提供了一种用于去除接收符号的ICI的方法。首先，在符号时间内经由无线信道接收发送符号，以获得接收的符号。所发送的符号包括P相同的原始部分数据，其中P是大于1的正整数。所接收的符号分别包括对应于原始部分数据的P个接收到的部分数据。接下来，在时域上复制P个接收到的部分数据中的至少两个，以获得至少两个复制的部分数据。每个复制的部分数据包括其对应的接收的部分数据的P个副本。之后，根据预定常数阵列的乘积和复制的部分数据之间的差异来确定时域的估计ICI。之后，从接收到的符号中减去估计的ICI，以获得输出符号。

8. 发明授权

US08218695B2 Wireless transmission system, receiver thereof, and method for removing inter-carrier interference thereof 有权
标题翻译：无线传输系统及其接收机，以及用于消除其载波间干扰的方法
公开(公告)号：US08218695B2
公开(公告)日：2012-07-10
申请号：US12243090
申请日：2008-10-01
申请人： Jen-Yuan Hsu , Lai-Huei Wang , Jiun-Yo Lai , Pang-An Ting
发明人： Jen-Yuan Hsu , Lai-Huei Wang , Jiun-Yo Lai , Pang-An Ting
IPC分类号： H03D1/04 , H03K9/00
CPC分类号： H04L27/2647 , H04L5/0007 , H04L5/0023 , H04L25/0212 , H04L25/0222 , H04L25/0226 , H04L25/0228 , H04L27/2607 , H04L27/2657 , H04L27/2662
摘要： A method for removing ICI for a received symbol is provided. Firstly, a transmitted symbol is received via a wireless channel within a symbol time so as to obtain the received symbol. The transmitted symbol includes P identical original partial data, wherein P is a positive integer larger than 1. The received symbol includes P received partial data corresponding to the original partial data, respectively. Next, on a time domain at least two of the P received partial data are copied so as to obtain at least two copied partial data. Each copied partial data includes P copies of its corresponding received partial data. After that, an estimated ICI of the time domain is determined according to the product of a predetermined constant array and the difference between the copied partial data. Afterwards, the estimated ICI is subtracted from the received symbol so as to obtain an output symbol.
摘要翻译：提供了一种用于去除接收符号的ICI的方法。首先，在符号时间内经由无线信道接收发送符号，以获得接收的符号。所发送的符号包括P相同的原始部分数据，其中P是大于1的正整数。所接收的符号分别包括对应于原始部分数据的P个接收的部分数据。接下来，在时域上复制P个接收到的部分数据中的至少两个，以获得至少两个复制的部分数据。每个复制的部分数据包括其对应的接收的部分数据的P个副本。之后，根据预定常数阵列的乘积和复制的部分数据之间的差异来确定时域的估计ICI。之后，从接收到的符号中减去估计的ICI，以获得输出符号。

9. 发明申请

US20080260076A1 CARRIER FREQUENCY OFFSET ESTIMATION METHOD AND SYSTEM 有权
标题翻译：载波频率估计方法和系统
公开(公告)号：US20080260076A1
公开(公告)日：2008-10-23
申请号：US12118632
申请日：2008-05-09
申请人： Jiun-Yo Lai , Jen-Yuan Hsu , Chin-Hung Chen , Pang-An Ting
发明人： Jiun-Yo Lai , Jen-Yuan Hsu , Chin-Hung Chen , Pang-An Ting
IPC分类号： H04L27/06
CPC分类号： H04L27/2657 , H04L27/2675
摘要： In one aspect of the invention, a carrier frequency offset (CFO) estimation method to estimate a CFO value of a received signal is provided, and the method comprises: receiving a preamble signal which includes several non-perfect repeat segments; applying an interpolation procedure to interpolate the perfect repeat point of one segment compared with the next segment or the previous segment; acquiring a delay correlation value based on the two perfect repeat signal segments and estimating the CFO value based on the delay correlation value.
摘要翻译：在本发明的一个方面，提供了一种用于估计接收信号的CFO值的载波频率偏移（CFO）估计方法，并且该方法包括：接收包括若干非完美重复段的前同步码信号; 应用插值过程来内插与下一个段或先前段相比的一个段的完美重复点; 基于两个完美重复信号段获取延迟相关值，并基于延迟相关值估计CFO值。

10. 发明授权

US08135093B2 Carrier frequency offset estimation method and system 有权
标题翻译：载频偏移估计方法及系统
公开(公告)号：US08135093B2
公开(公告)日：2012-03-13
申请号：US12118632
申请日：2008-05-09
申请人： Jiun-Yo Lai , Jen-Yuan Hsu , Chin-Hung Chen , Pang-An Ting
发明人： Jiun-Yo Lai , Jen-Yuan Hsu , Chin-Hung Chen , Pang-An Ting
IPC分类号： H04L27/06
CPC分类号： H04L27/2657 , H04L27/2675
摘要： In one aspect of the invention, a carrier frequency offset (CFO) estimation method to estimate a CFO value of a received signal is provided, and the method comprises: receiving a preamble signal which includes several non-perfect repeat segments; applying an interpolation procedure to interpolate the perfect repeat point of one segment compared with the next segment or the previous segment; acquiring a delay correlation value based on the two perfect repeat signal segments and estimating the CFO value based on the delay correlation value.
摘要翻译：在本发明的一个方面，提供了一种用于估计接收信号的CFO值的载波频率偏移（CFO）估计方法，并且该方法包括：接收包括若干非完美重复段的前同步码信号; 应用插值过程来内插与下一个段或先前段相比的一个段的完美重复点; 基于两个完美重复信号段获取延迟相关值，并基于延迟相关值估计CFO值。

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