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：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。

公开(公告)号：US20130083871A1

公开(公告)日：2013-04-04

申请号：US13252212

申请日：2011-10-04

申请人： Yao-Nan Lee ,  Shin-Shiuan Cheng

发明人： Yao-Nan Lee ,  Shin-Shiuan Cheng

IPC分类号： H04L27/06

CPC分类号： H04L1/005 ,  H04L1/0057 ,  H04L25/067

摘要： An iterative detection and decoding device includes a signal detector, an error-correction decoder and an SI selector. The signal detector is utilized for generating a set of soft information (SI). The error-correction decoder is coupled to the signal detector, for iteratively decoding the set of SI and accordingly updating the set of SI to generate a set of updated SI. The SI selector is coupled between the signal detector and the error-correction decoder, for selecting at least one SI from the set of updated SI when each SI satisfies at least one predetermined constraint rule. The signal detector further selectively generates a new set of SI according to a selection result generated from the SI selector.

摘要翻译： 迭代检测和解码装置包括信号检测器，纠错解码器和SI选择器。 信号检测器用于产生一组软信息（SI）。 纠错解码器耦合到信号检测器，用于对SI的集合迭代地解码，并因此更新SI的集合以生成一组更新的SI。 SI选择器耦合在信号检测器和纠错解码器之间，用于当每个SI满足至少一个预定约束规则时，从更新的SI集合中选择至少一个SI。 信号检测器还根据从SI选择器产生的选择结果选择性地生成新的SI集合。

公开(公告)号：US20090254797A1

公开(公告)日：2009-10-08

申请号：US12368297

申请日：2009-02-09

申请人： Cheng-Hsuan Wu ,  Yao-Nan Lee ,  Jiunn-Tsair Chen

发明人： Cheng-Hsuan Wu ,  Yao-Nan Lee ,  Jiunn-Tsair Chen

IPC分类号： H03M13/37 ,  H04L27/06

CPC分类号： H04L25/024 ,  H03M13/3746 ,  H04L25/03171 ,  H04L25/03191 ,  H04L25/067 ,  H04L2025/03624

摘要： Considering both performance and cost of an iterative receiver, the present invention provides an iterative signal receiving method for a wireless communications system. The iterative signal receiving method includes utilizing a channel estimating (CE) process to perform channel estimation for a received signal according to first log-likelihood ratio (LLR) data to generate second LLR data, and then generating the first LLR data according to an error correction code (ECC) decoding process and the second LLR data. When the ECC decoding process is a convolutional decoding process, the CE process is a zero-forcing process, a minimum mean square error (MMSE) process or an interpolation-based process. When the ECC decoding process is a low density parity check code (LDPC) decoding process, the CE process is a maximum likelihood (ML) process or a maximum a posteriori (MAP) process.

摘要翻译： 考虑到迭代接收机的性能和成本，本发明提供了一种用于无线通信系统的迭代信号接收方法。 迭代信号接收方法包括利用信道估计（CE）处理，根据第一对数似然比（LLR）数据对接收信号进行信道估计，以生成第二LLR数据，然后根据错误产生第一LLR数据 校正码（ECC）解码处理和第二LLR数据。 当ECC解码处理是卷积解码处理时，CE处理是强迫处理，最小均方误差（MMSE）处理或基于插值的处理。 当ECC解码处理是低密度奇偶校验码（LDPC）解码处理时，CE处理是最大似然（ML）处理或最大后验（MAP）处理。

公开(公告)号：US08804851B2

公开(公告)日：2014-08-12

申请号：US13252212

申请日：2011-10-04

申请人： Yao-Nan Lee ,  Shin-Shiuan Cheng

发明人： Yao-Nan Lee ,  Shin-Shiuan Cheng

IPC分类号： H04B1/66

CPC分类号： H04L1/005 ,  H04L1/0057 ,  H04L25/067

摘要： An iterative detection and decoding device includes a signal detector, an error-correction decoder and an SI selector. The signal detector is utilized for generating a set of soft information (SI). The error-correction decoder is coupled to the signal detector, for iteratively decoding the set of SI and accordingly updating the set of SI to generate a set of updated SI. The SI selector is coupled between the signal detector and the error-correction decoder, for selecting at least one SI from the set of updated SI when each SI satisfies at least one predetermined constraint rule. The signal detector further selectively generates a new set of SI according to a selection result generated from the SI selector.

摘要翻译： 迭代检测和解码装置包括信号检测器，纠错解码器和SI选择器。 信号检测器用于产生一组软信息（SI）。 纠错解码器耦合到信号检测器，用于对SI的集合迭代地解码，并因此更新SI的集合以生成一组更新的SI。 SI选择器耦合在信号检测器和纠错解码器之间，用于当每个SI满足至少一个预定约束规则时，从更新的SI集合中选择至少一个SI。 信号检测器还根据从SI选择器产生的选择结果选择性地生成新的SI集合。

公开(公告)号：US20130080857A1

公开(公告)日：2013-03-28

申请号：US13239425

申请日：2011-09-22

申请人： Yao-Nan Lee ,  Shin-Shiuan Cheng

发明人： Yao-Nan Lee ,  Shin-Shiuan Cheng

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H03M13/353 ,  G06F11/1068 ,  H03M13/1102

摘要： A flash memory controller includes an encoding block, a decoding block and a control unit. The encoding block is utilized for encoding raw bits with a target forward error-correction (FEC) coding scheme selected from a plurality of candidate FEC coding schemes. The decoding block is utilized for decoding encoded bits with a target FEC decoding scheme selected from a plurality of candidate FEC decoding schemes, wherein the target FEC decoding scheme corresponds to the target FEC coding scheme. The control unit is coupled to the encoding block and the decoding block, and utilized for controlling a selection of the target FEC coding scheme utilized by the encoding block and a selection of the target FEC decoding scheme utilized by the decoding block according to a number of program/erase cycles of a flash memory.

摘要翻译： 闪存控制器包括编码块，解码块和控制单元。 编码块用于使用从多个候选FEC编码方案中选择的目标前向纠错（FEC）编码方案来对原始比特进行编码。 解码块用于利用从多个候选FEC解码方案中选择的目标FEC解码方案对编码比特进行解码，其中目标FEC解码方案对应于目标FEC编码方案。 控制单元耦合到编码块和解码块，并用于控制由编码块使用的目标FEC编码方案的选择以及解码块利用的目标FEC解码方案的选择，根据多个 闪存的编程/擦除周期。

公开(公告)号：US07688830B2

公开(公告)日：2010-03-30

申请号：US11559408

申请日：2006-11-14

申请人： Yao-Nan Lee ,  Jiunn-Tsair Chen

发明人： Yao-Nan Lee ,  Jiunn-Tsair Chen

IPC分类号： H04L12/28

CPC分类号： H04W16/22

摘要： Disclosed is a method and apparatus for fully-distributed packet scheduling in a wireless network. The decoding algorithm with low-density parity-check code is applied in a transmission wireless network to achieve the fully-distributed packet scheduling. In the packet scheduling, only one wireless network node is needed to exchange information and communicate with its neighboring network nodes. Therefore, it is not necessary to estimate the signal to noise ratio, while being eye to eye among the neighboring network nodes. If the network load exceeds the network capacity, the present invention automatically eliminates the most difficult user to reduce the overall network load and diverts the resources to the surviving users.

摘要翻译： 公开了一种在无线网络中完全分布式分组调度的方法和装置。 在传输无线网络中应用具有低密度奇偶校验码的解码算法，实现完全分布的分组调度。 在分组调度中，只需要一个无线网络节点来交换信息并与其相邻的网络节点进行通信。 因此，在邻近的网络节点之间，不用考虑信噪比的估计。 如果网络负载超过网络容量，本发明自动消除最困难的用户，以减少整体网络负载，并将资源转移给幸存的用户。

公开(公告)号：US20080019374A1

公开(公告)日：2008-01-24

申请号：US11559408

申请日：2006-11-14

申请人： Yao-Nan Lee ,  Jiunn-Tsair Chen

发明人： Yao-Nan Lee ,  Jiunn-Tsair Chen

IPC分类号： H04L12/56

CPC分类号： H04W16/22

摘要： Disclosed is a method and apparatus for fully-distributed packet scheduling in a wireless network. The decoding algorithm with low-density parity-check code is applied in a transmission wireless network to achieve the fully-distributed packet scheduling. In the packet scheduling, only one wireless network node is needed to exchange information and communicate with its neighboring network nodes. Therefore, it is not necessary to estimate the signal to noise ratio, while being eye to eye among the neighboring network nodes. If the network load exceeds the network capacity, the present invention automatically eliminates the most difficult user to reduce the overall network load and diverts the resources to the surviving users.

摘要翻译： 公开了一种在无线网络中完全分布式分组调度的方法和装置。 在传输无线网络中应用具有低密度奇偶校验码的解码算法，实现完全分布的分组调度。 在分组调度中，只需要一个无线网络节点来交换信息并与其相邻的网络节点进行通信。 因此，在邻近的网络节点之间，不用考虑信噪比的估计。 如果网络负载超过网络容量，本发明自动消除最困难的用户，以减少整体网络负载，并将资源转移给幸存的用户。