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：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：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：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。

公开(公告)号：US20090279623A1

公开(公告)日：2009-11-12

申请号：US12431046

申请日：2009-04-28

申请人： Jia-Hao Wu ,  Lai-Huei Wang ,  Yu-Tao Hsieh ,  Pang-An Ting

发明人： Jia-Hao Wu ,  Lai-Huei Wang ,  Yu-Tao Hsieh ,  Pang-An Ting

IPC分类号： H04J11/00 ,  H04L27/28

CPC分类号： H04L5/0048 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/023 ,  H04L27/2613

摘要： A method for generating a pilot pattern for data to be transmitted in an orthogonal frequency-division multiplexing (OFDM) based communication system includes: allocating pilot symbols for a plurality of data streams to form a plurality of pilot clusters in the pilot pattern, wherein each of the pilot clusters includes ones of the pilot symbols, the ones of the pilot symbols being for respectively different ones of the data streams.

摘要翻译： 一种用于在基于正交频分复用（OFDM）的通信系统中生成要发送的数据的导频模式的方法包括：为多个数据流分配导频符号以在导频模式中形成多个导频簇，其中每个 导频簇包括导频符号中的一个，导频符号中的一个用于分别不同的数据流。

公开(公告)号：US08488694B2

公开(公告)日：2013-07-16

申请号：US12431046

申请日：2009-04-28

申请人： Jia-Hao Wu ,  Lai-Huei Wang ,  Yu-Tao Hsieh ,  Pang-An Ting

发明人： Jia-Hao Wu ,  Lai-Huei Wang ,  Yu-Tao Hsieh ,  Pang-An Ting

IPC分类号： H04J11/00

CPC分类号： H04L5/0048 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/023 ,  H04L27/2613

摘要： A method for generating a pilot pattern for data to be transmitted in an orthogonal frequency-division multiplexing (OFDM) based communication system includes: allocating pilot symbols for a plurality of data streams to form a plurality of pilot clusters in the pilot pattern, wherein each of the pilot clusters includes ones of the pilot symbols, the ones of the pilot symbols being for respectively different ones of the data streams.

摘要翻译： 一种用于在基于正交频分复用（OFDM）的通信系统中生成要发送的数据的导频模式的方法包括：为多个数据流分配导频符号以在导频模式中形成多个导频簇，其中每个 导频簇包括导频符号中的一个，导频符号中的一个用于分别不同的数据流。

公开(公告)号：US08331482B2

公开(公告)日：2012-12-11

申请号：US12481880

申请日：2009-06-10

申请人： Lai-Huei Wang ,  Chia-Lung Tsai ,  Yu-Tao Hsieh ,  Pang-An Ting ,  Jen-Yuan Hsu

发明人： Lai-Huei Wang ,  Chia-Lung Tsai ,  Yu-Tao Hsieh ,  Pang-An Ting ,  Jen-Yuan Hsu

IPC分类号： H04L27/26 ,  H04L23/00

CPC分类号： H04L5/0048 ,  H04L1/0618 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0044

摘要： A subcarrier allocation method for use by a transmitter, the transmitter being configured to, when transmitting first and second data streams, allocate pilot symbols for the first and second data streams to subcarriers, such that a first plurality of subcarriers carry the pilot symbols for the first data stream and a second plurality of subcarriers carry the pilot symbols for the second data stream. The method includes allocating, when the transmitter transmits the first data stream but does not transmit the second data stream, the second plurality of subcarriers to carry no formation or information relating to the first data stream.

摘要翻译： 一种由发射机使用的副载波分配方法，所述发射机被配置为当发射第一和第二数据流时，将第一和第二数据流的导频符号分配给子载波，使得第一多个子载波携带用于 第一数据流和第二多个子载波携带用于第二数据流的导频符号。 该方法包括当发射机发送第一数据流但不发送第二数据流时，分配第二多个子载波，以不携带与第一数据流有关的形成或信息。

公开(公告)号：US08693570B2

公开(公告)日：2014-04-08

申请号：US12605590

申请日：2009-10-26

申请人： Lai-Huei Wang ,  Chia-Lung Tsai ,  Yu-Tao Hsieh ,  Pang An Ting ,  Jen-Yuan Hsu

发明人： Lai-Huei Wang ,  Chia-Lung Tsai ,  Yu-Tao Hsieh ,  Pang An Ting ,  Jen-Yuan Hsu

IPC分类号： H04L27/00

CPC分类号： H04L27/2601

摘要： A wireless communication method may include receiving a first data stream comprising a data sequence and computing a permutation sequence based on a content of the received first data stream. The permutation sequence is a non-predetermined sequence. The method may further include performing a permutation on the first data stream based on the permutation sequence to generate a permuted first data stream being configured for wireless transmission.

摘要翻译： 无线通信方法可以包括接收包括数据序列的第一数据流，并且基于所接收的第一数据流的内容来计算置换序列。 置换序列是非预定序列。 该方法还可以包括基于置换序列对第一数据流执行置换，以产生被配置用于无线传输的置换的第一数据流。

公开(公告)号：US08406279B2

公开(公告)日：2013-03-26

申请号：US12212054

申请日：2008-09-17

申请人： Yu-Tao Hsieh ,  Jen-Yuan Hsu ,  Pang-An Ting ,  Lai-Huei Wang

发明人： Yu-Tao Hsieh ,  Jen-Yuan Hsu ,  Pang-An Ting ,  Lai-Huei Wang

IPC分类号： H04B1/00 ,  H04K1/10 ,  H04W4/00

CPC分类号： H04L27/2613 ,  H04L5/0051

摘要： A method for pilot design for data to be transmitted by an orthogonal frequency-division multiplexing (OFDM) based communication system, the data being represented by a plurality of OFDM symbols. The method includes allocating pilot symbols for a data stream to be included in ones of the OFDM symbols; and performing a frequency shift on at least one of the OFDM symbols, to reduce frequency distance disparities among the pilot symbols.

摘要翻译： 一种用于通过基于正交频分复用（OFDM）的通信系统发送的数据的导频设计的方法，所述数据由多个OFDM符号表示。 该方法包括为要被包括在OFDM符号之一中的数据流分配导频符号; 并且对至少一个OFDM符号执行频移，以减少导频符号之间的频率距离差异。

公开(公告)号：US08139693B2

公开(公告)日：2012-03-20

申请号：US12487691

申请日：2009-06-19

申请人： Lai-Huei Wang ,  Pang-An Ting ,  Chien-Yu Kao ,  Chia-Hung Lin

发明人： Lai-Huei Wang ,  Pang-An Ting ,  Chien-Yu Kao ,  Chia-Hung Lin

IPC分类号： H03D1/04

CPC分类号： H04L25/0206 ,  H04L25/022 ,  H04L25/0232 ,  H04L25/03821

摘要： An estimation method is provided for use in a receiver of an OFDM (orthogonal frequency division multiplexing) system to estimate the ICI (inter-carrier interference) and the noise power of a channel. Two pilot signals respectively carried by two subcarriers are received from the channel wherein the two pilot signals are adjacent and differ by a first phase angle. Another two pilot signals respectively carried by another two subcarrier are received from the channel wherein the another two pilot signals are adjacent and differ by a second phase angle. According to some embodiments of the invention, these phases are correlated with the ICI power, but are uncorrelated with the noise power. The estimation method then individually estimates the ICI power and noise power according to the first phase and the second phase.

摘要翻译： 提供了一种在OFDM（正交频分复用）系统的接收机中用于估计信道的ICI（载波间干扰）和噪声功率的估计方法。 从两个导频信号相邻并且相差第一相位角的信道接收分别由两个子载波承载的两个导频信号。 分别由另外两个子载波承载的另外两个导频信号从该信道接收，其中另外两个导频信号相邻并且相差第二相位角。 根据本发明的一些实施例，这些相位与ICI功率相关，但与噪声功率无关。 然后，估计方法根据第一阶段和第二阶段分别估计ICI功率和噪声功率。