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。

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。

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。

公开(公告)号：US08107374B2

公开(公告)日：2012-01-31

申请号：US12343778

申请日：2008-12-24

申请人： Yu T. Su ,  Yen-Shuo Lu ,  Chih-Lun Weng ,  Jiun-Yo Lai ,  Jen-Yuan Hsu ,  Pang-An Ting

发明人： Yu T. Su ,  Yen-Shuo Lu ,  Chih-Lun Weng ,  Jiun-Yo Lai ,  Jen-Yuan Hsu ,  Pang-An Ting

IPC分类号： G01R31/08

CPC分类号： H04W72/087 ,  H04W72/10

摘要： Methods and systems for providing generalized link adaptation in an orthogonal frequency-division multiple access wireless communications network can include determining a number of desired resource blocks (RBs) for each user of a plurality of users; calculating a maximal channel gain Gm for each RB of a plurality of RBs; reordering the plurality of RBs based on the Gm; assigning one of the plurality of RBs to the plurality of users one-by-one according to the reordering of the plurality of RBs; determining a priority list for assigning remaining unassigned RBs; assigning the remaining unassigned RBs to the plurality of users based on the priority list; and mapping a symbol or a packet to each assigned RB.

摘要翻译： 用于在正交频分多址无线通信网络中提供广义链路自适应的方法和系统可以包括为多个用户的每个用户确定多个期望的资源块（RB）; 计算多个RB中的每个RB的最大信道增益Gm; 基于Gm重新排序多个RB; 根据多个RB的重新排序，一个接一个地将多个RB中的一个RB分配给多个用户; 确定用于分配剩余未分配RB的优先级列表; 基于优先级列表将剩余的未分配RB分配给多个用户; 并将符号或分组映射到每个分配的RB。

公开(公告)号：US20110013735A1

公开(公告)日：2011-01-20

申请号：US12554930

申请日：2009-09-07

申请人： Chao-Wang Huang ,  Pang-An Ting ,  Jiun-Yo Lai ,  Chia-Chi Huang

发明人： Chao-Wang Huang ,  Pang-An Ting ,  Jiun-Yo Lai ,  Chia-Chi Huang

IPC分类号： H04B1/10

CPC分类号： H04J11/004 ,  H04L27/2647

摘要： A progressive parallel interference canceller (PPIC) and a method and a receiver thereof are illustrated. The PPIC reconstructs each subchannel interference reconstruction signal through several iterations and subtracts the corresponding subchannel interference reconstruction signal from each subchannel frequency-domain reception signal to obtain a subchannel frequency-domain signal. Thereby, according to the present disclosure, inter-channel interference can be cancelled without re-performing channel coding or estimating the signal to noise ratio (SNR) or frequency offset.

摘要翻译： 示出了逐行并行干扰消除器（PPIC）及其方法和接收器。 PPIC通过几次迭代重构每个子信道干扰重建信号，并从每个子信道频域接收信号中减去相应的子信道干扰重建信号，以获得子信道频域信号。 因此，根据本公开，可以消除信道间干扰，而不需要重新进行信道编码或估计信噪比（SNR）或频率偏移。

公开(公告)号：US07782757B2

公开(公告)日：2010-08-24

申请号：US12204422

申请日：2008-09-04

申请人： Lai-Huei Wang ,  Pang-An Ting ,  Jia-Hao Wu ,  Jiun-Yo Lai

发明人： Lai-Huei Wang ,  Pang-An Ting ,  Jia-Hao Wu ,  Jiun-Yo Lai

IPC分类号： H04J11/00 ,  H04B7/185 ,  H04W4/00 ,  H03D1/04

CPC分类号： H04L5/0051 ,  H04L5/0007 ,  H04L5/006 ,  H04L5/0062 ,  H04L5/0085 ,  H04L25/0216 ,  H04L25/0224

摘要： A method, and device implementing the method, for adaptively allocating pilot signals in a wireless communication system. The method includes receiving channel data, including channel length (L) data, inter-carrier interference power (PICI) data, coherence time (CT) data, and a number of subcarriers (N). The method further includes selecting, when L is greater than a first channel length threshold (LTH1), a first number of pilot signals between a minimum value of L and a maximum number of pilot signals NP,MAX, wherein the first number of pilot signals NP are equally spaced in time according to the CT data, and equally spaced in frequency. Further, the method includes selecting, when L is less than LTH1 and PICI is less than a power threshold (PTH), a second number of pilot signals such that the second number of pilot signals is between the minimum value of L and NP,MAX, wherein the second number of pilot signals are equally spaced in time according to the CT data, and equally spaced in frequency. Finally, the method includes selecting, when L is less than LTH1 and PICI is greater than PTH, a third number of pilot signals such that the third number of pilot signals is equal to n times L (nL), wherein n is an integer, the third number of pilot signals being equally spaced in time according to the CT data, and allocated according to a cluster(n) clustered pilot scheme with a cluster size equal to n, the n-sized clusters being clustered in frequency.

摘要翻译： 一种实现该方法的方法和装置，用于在无线通信系统中自适应地分配导频信号。 该方法包括接收信道数据，包括信道长度（L）数据，载波间干扰功率（PICI）数据，相干时间（CT）数据和多个副载波（N）。 该方法还包括：当L大于第一信道长度阈值（LTH1）时，选择最小值L和最大数量导频信号NP，MAX之间的第一数量的导频信号，其中第一数量的导频信号 NP根据CT数据在时间上等间隔，频率相等。 此外，该方法包括当L小于LTH1且PICI小于功率阈值（PTH）时选择第二数量的导频信号，使得第二数量的导频信号在L和NP的最小值之间，MAX ，其中所述第二数量的导频信号根据所述CT数据在时间上等间隔，并且频率等间隔。 最后，该方法包括当L小于LTH1且PICI大于PTH时选择第三数量的导频信号，使得第三数量的导频信号等于n倍L（nL），其中n是整数， 第三数量的导频信号根据CT数据在时间上等间隔，并且根据簇大小等于n的簇（n）聚簇导频方案分配，n个大小的簇以频率聚类。

公开(公告)号：US20100027703A1

公开(公告)日：2010-02-04

申请号：US12264230

申请日：2008-11-03

申请人： Chun-Lin Yeh ,  Pang-An Ting ,  Jiun-Yo Lai ,  Chao-Wang Huang

发明人： Chun-Lin Yeh ,  Pang-An Ting ,  Jiun-Yo Lai ,  Chao-Wang Huang

IPC分类号： H04B7/02

CPC分类号： H04L25/067 ,  H04L25/022 ,  H04L27/2647 ,  H04L2025/03426

摘要： A multiple-input multiple-output detector and a detection method using the same are provided. The detection method includes following steps. First, a plurality of candidate results is provided by a plurality of detectors. Next, a channel condition and a detected criterion are provided. Finally, one of the candidate results is selected to serve as a detected result according to the channel condition and the selection criterion.

摘要翻译： 提供了一种多输入多输出检测器和使用其的检测方法。 检测方法包括以下步骤。 首先，由多个检测器提供多个候选结果。 接下来，提供信道条件和检测标准。 最后，选择一个候选结果作为根据信道条件和选择标准的检测结果。

公开(公告)号：US20100008308A1

公开(公告)日：2010-01-14

申请号：US12343778

申请日：2008-12-24

申请人： Yu T. SU ,  Yen-Shuo LU ,  Chih-Lun WENG ,  Jiun-Yo LAI ,  Jen-Yuan HSU ,  Pang-An TING

发明人： Yu T. SU ,  Yen-Shuo LU ,  Chih-Lun WENG ,  Jiun-Yo LAI ,  Jen-Yuan HSU ,  Pang-An TING

IPC分类号： H04W4/00

CPC分类号： H04W72/087 ,  H04W72/10

摘要： Methods and systems for providing generalized link adaptation in an orthogonal frequency-division multiple access wireless communications network can include determining a number of desired resource blocks (RBs) for each user of a plurality of users; calculating a maximal channel gain Gm for each RB of a plurality of RBs; reordering the plurality of RBs based on the Gm; assigning one of the plurality of RBs to the plurality of users one-by-one according to the reordering of the plurality of RBs; determining a priority list for assigning remaining unassigned RBs; assigning the remaining unassigned RBs to the plurality of users based on the priority list; and mapping a symbol or a packet to each assigned RB.

摘要翻译： 用于在正交频分多址无线通信网络中提供广义链路自适应的方法和系统可以包括为多个用户的每个用户确定多个期望的资源块（RB）; 计算多个RB中的每个RB的最大信道增益Gm; 基于Gm重新排序多个RB; 根据多个RB的重新排序，一个接一个地将多个RB中的一个RB分配给多个用户; 确定用于分配剩余未分配RB的优先级列表; 基于优先级列表将剩余的未分配RB分配给多个用户; 并将符号或分组映射到每个分配的RB。

公开(公告)号：US20090092194A1

公开(公告)日：2009-04-09

申请号：US12204422

申请日：2008-09-04

申请人： Lai-Huei Wang ,  Pang-An Ting ,  Jia-Hao Wu ,  Jiun-Yo Lai

发明人： Lai-Huei Wang ,  Pang-An Ting ,  Jia-Hao Wu ,  Jiun-Yo Lai

IPC分类号： H04L27/28

CPC分类号： H04L5/0051 ,  H04L5/0007 ,  H04L5/006 ,  H04L5/0062 ,  H04L5/0085 ,  H04L25/0216 ,  H04L25/0224

摘要： A method, and device implementing the method, for adaptively allocating pilot signals in a wireless communication system. The method includes receiving channel data, including channel length (L) data, inter-carrier interference power (PICI) data, coherence time (CT) data, and a number of subcarriers (N). The method further includes selecting, when L is greater than a first channel length threshold (LTH1), a first number of pilot signals between a minimum value of L and a maximum number of pilot signals NP,MAX, wherein the first number of pilot signals NP are equally spaced in time according to the CT data, and equally spaced in frequency. Further, the method includes selecting, when L is less than LTH1 and PICI is less than a power threshold (PTH), a second number of pilot signals such that the second number of pilot signals is between the minimum value of L and NP,MAX, wherein the second number of pilot signals are equally spaced in time according to the CT data, and equally spaced in frequency. Finally, the method includes selecting, when L is less than LTH1 and PICI is greater than PTH, a third number of pilot signals such that the third number of pilot signals is equal to n times L (nL), wherein n is an integer, the third number of pilot signals being equally spaced in time according to the CT data, and allocated according to a cluster(n) clustered pilot scheme with a cluster size equal to n, the n-sized clusters being clustered in frequency.

摘要翻译： 一种实现该方法的方法和装置，用于在无线通信系统中自适应地分配导频信号。 该方法包括接收信道数据，包括信道长度（L）数据，载波间干扰功率（PICI）数据，相干时间（CT）数据和多个副载波（N）。 该方法还包括：当L大于第一信道长度阈值（LTH1）时，选择最小值L和最大数量导频信号NP，MAX之间的第一数量的导频信号，其中第一数量的导频信号 NP根据CT数据在时间上等间隔，频率相等。 此外，该方法包括当L小于LTH1且PICI小于功率阈值（PTH）时选择第二数量的导频信号，使得第二数量的导频信号在L和NP的最小值之间，MAX ，其中所述第二数量的导频信号根据所述CT数据在时间上等间隔，并且频率等间隔。 最后，该方法包括当L小于LTH1且PICI大于PTH时选择第三数量的导频信号，使得第三数量的导频信号等于n倍L（nL），其中n是整数， 第三数量的导频信号根据CT数据在时间上等间隔，并且根据簇大小等于n的簇（n）聚簇导频方案分配，n个大小的簇以频率聚类。

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。