公开(公告)号：US20070286297A1

公开(公告)日：2007-12-13

申请号：US11448798

申请日：2006-06-08

申请人： Kwang-Cheng Chen ,  Ching-Sheng Ni ,  Heng-Iang Hsu ,  Wu-Chi Wang ,  Chih-Chiang Hsieh

发明人： Kwang-Cheng Chen ,  Ching-Sheng Ni ,  Heng-Iang Hsu ,  Wu-Chi Wang ,  Chih-Chiang Hsieh

IPC分类号： H04K1/10

CPC分类号： H04L27/2647

摘要： A method for co-channel interference suppression in Orthogonal Frequency Division Multiplexing (OFDM) systems with multiple receiving antennas is provided, wherein the co-channel interference (CCI) in different directions is suppressed by the spatial technique provided by the antenna arrays, and the interference to a desired carrier caused by other sub-carriers is also taken into consideration, that is, the interference of other sub-carriers is cancelled by means of a multistage interference cancellation, thereby the performance for interference suppression is improved.

摘要翻译： 提供了一种用于具有多个接收天线的正交频分复用（OFDM）系统中的同信道干扰抑制的方法，其中通过天线阵列提供的空间技术来抑制不同方向的同信道干扰（CCI），并且 也考虑了由其他副载波引起的对期望载波的干扰，即通过多级干扰消除来消除其他副载波的干扰，从而提高了干扰抑制的性能。

公开(公告)号：US20120250801A1

公开(公告)日：2012-10-04

申请号：US13076049

申请日：2011-03-30

申请人： Yao-Nan Lee ,  Ching-Sheng Ni

发明人： Yao-Nan Lee ,  Ching-Sheng Ni

IPC分类号： H04L27/06

CPC分类号： H04L25/03159 ,  H04L25/022 ,  H04L27/2647

摘要： An ISI removing method for a received signal executed by a receiver in an OFDM system to estimate a frequency-domain data signal carried on the received signal is provided. The method comprises the steps of: removing the first interference of known signal of the received signal; estimating a first data signal according to the received signal; performing a hard decision operation on the first data signal to generate a first frequency-domain signal; performing an Inverse Fast Fourier Transform operation on the first frequency-domain signal to generate a first time-domain signal; creating a tailing signal according to the first time-domain signal; removing a preamble signal from the received signal to generate a second signal; combining the first time-domain signal and the second signal to estimate the frequency-domain data signal.

摘要翻译： 提供了一种由OFDM系统中的接收机执行的用于估计接收信号承载的频域数据信号的接收信号的ISI去除方法。 该方法包括以下步骤：消除接收信号的已知信号的第一干扰; 根据接收到的信号估计第一数据信号; 对所述第一数据信号执行硬判决操作以产生第一频域信号; 对所述第一频域信号执行逆快速傅里叶变换操作以产生第一时域信号; 根据第一时域信号产生拖尾信号; 从所述接收信号中去除前置信号以产生第二信号; 组合第一时域信号和第二信号以估计频域数据信号。

公开(公告)号：US08611475B2

公开(公告)日：2013-12-17

申请号：US13159306

申请日：2011-06-13

申请人： Pei-Jun Shih ,  Ching-Sheng Ni ,  Shin-Shiuan Cheng

发明人： Pei-Jun Shih ,  Ching-Sheng Ni ,  Shin-Shiuan Cheng

IPC分类号： H03D1/00

CPC分类号： H04L25/0212 ,  H04L25/0204 ,  H04L25/0224 ,  H04L27/2663 ,  H04L27/2665 ,  H04L27/2675 ,  H04L27/2695

摘要： A channel estimation method for use with a received signal by a receiver is disclosed. The received signal comprises multiple data bursts which are transmitted to the receiver via multiple path channels, with each of the data bursts having a plurality of preamble symbols which are decoded. The channel estimation method includes the following steps: firstly, at least one correlation pattern is generated according to the decoded preamble symbols. Then, a cross correlation of the correlation pattern with the received signal is performed to yield at least one correlation result of channel impulse response (CIR). Wherein, the symbol boundary of the received signal is decided according to the correlation result.

摘要翻译： 公开了一种与接收机接收的信号一起使用的信道估计方法。 所接收的信号包括多个数据脉冲串，其经由多个路径信道被发送到接收机，其中每个数据脉冲串具有被解码的多个前导码符号。 信道估计方法包括以下步骤：首先，根据解码的前导符号生成至少一个相关模式。 然后，执行相关模式与接收信号的互相关，以产生信道脉冲响应（CIR）的至少一个相关结果。 其中，根据相关结果确定接收信号的符号边界。

公开(公告)号：US08565327B2

公开(公告)日：2013-10-22

申请号：US13076049

申请日：2011-03-30

申请人： Yao-Nan Lee ,  Ching-Sheng Ni

发明人： Yao-Nan Lee ,  Ching-Sheng Ni

IPC分类号： H04K1/10

CPC分类号： H04L25/03159 ,  H04L25/022 ,  H04L27/2647

摘要： An Inter-Symbol Interference (ISI) removing method for a received signal executed by a receiver in an Orthogonal frequency division multiplexing (OFDM) system to estimate a frequency-domain data signal carried on the received signal is provided. The method comprises the steps of: removing the first interference of known signal of the received signal; estimating a first data signal according to the received signal; performing a hard decision operation on the first data signal to generate a first frequency-domain signal; performing an Inverse Fast Fourier Transform operation on the first frequency-domain signal to generate a first time-domain signal; creating a tailing signal according to the first time-domain signal; removing a preamble signal from the received signal to generate a second signal; combining the first time-domain signal and the second signal to estimate the frequency-domain data signal.

摘要翻译： 提供了一种由正交频分复用（OFDM）系统中的接收机执行的接收信号的符号间干扰（ISI）去除方法，用于估计接收信号上承载的频域数据信号。 该方法包括以下步骤：消除接收信号的已知信号的第一干扰; 根据接收到的信号估计第一数据信号; 对所述第一数据信号执行硬判决操作以产生第一频域信号; 对所述第一频域信号执行逆快速傅里叶变换操作以产生第一时域信号; 根据第一时域信号产生拖尾信号; 从所述接收信号中去除前置信号以产生第二信号; 组合第一时域信号和第二信号以估计频域数据信号。