公开(公告)号：US20090264088A1

公开(公告)日：2009-10-22

申请号：US12423017

申请日：2009-04-14

申请人： Xiu-Sheng Li ,  Shin-Lin Shieh ,  Shin-Yuan Wang

发明人： Xiu-Sheng Li ,  Shin-Lin Shieh ,  Shin-Yuan Wang

IPC分类号： H04B1/04

CPC分类号： H04B1/1027 ,  H04L1/0054 ,  H04L25/0212 ,  H04L25/0224 ,  H04L25/03006

摘要： A method for mitigating interference is provided. First, a received signal having a training sequence is received from a transmitter. Then, a Signal-to-Interference-plus-Noise Ratio (SINR) of the training sequence in the received signal is calculated, and whether a co-channel interference signal exists in the received signal is determined according to the SINR. The signal power corresponding to each time index in the received signal is calculated to detect a beginning time point and an ending time point of the co-channel interference signal. Finally, when the co-channel interference signal in the received signal is detected, the time when an interference cancellation filter is turned on is determined by the beginning time point and the ending time point.

摘要翻译： 提供了减轻干扰的方法。 首先，从发送器接收具有训练序列的接收信号。 然后，计算接收信号中的训练序列的信号与干扰加噪声比（SINR），并根据SINR确定接收信号中是否存在同信道干扰信号。 计算与接收信号中的每个时间索引对应的信号功率，以检测同信道干扰信号的开始时间点和结束时间点。 最后，当检测到接收信号中的同信道干扰信号时，由开始时间点和结束时间点确定干扰消除滤波器导通的时间。

公开(公告)号：US08078131B2

公开(公告)日：2011-12-13

申请号：US12423017

申请日：2009-04-14

申请人： Xiu-Sheng Li ,  Shin-Lin Shieh ,  Shin-Yuan Wang

发明人： Xiu-Sheng Li ,  Shin-Lin Shieh ,  Shin-Yuan Wang

IPC分类号： H04B1/10

CPC分类号： H04B1/1027 ,  H04L1/0054 ,  H04L25/0212 ,  H04L25/0224 ,  H04L25/03006

摘要： A method for mitigating interference is provided. First, a received signal having a training sequence is received from a transmitter. Then, a Signal-to-Interference-plus-Noise Ratio (SINR) of the training sequence in the received signal is calculated, and whether a co-channel interference signal exists in the received signal is determined according to the SINR. The signal power corresponding to each time index in the received signal is calculated to detect a beginning time point and an ending time point of the co-channel interference signal. Finally, when the co-channel interference signal in the received signal is detected, the time when an interference cancellation filter is turned on is determined by the beginning time point and the ending time point.

摘要翻译： 提供了减轻干扰的方法。 首先，从发送器接收具有训练序列的接收信号。 然后，计算接收信号中的训练序列的信号与干扰加噪声比（SINR），并根据SINR确定接收信号中是否存在同信道干扰信号。 计算与接收信号中的每个时间索引对应的信号功率，以检测同信道干扰信号的开始时间点和结束时间点。 最后，当检测到接收信号中的同信道干扰信号时，由开始时间点和结束时间点确定干扰消除滤波器导通的时间。

公开(公告)号：US07633976B2

公开(公告)日：2009-12-15

申请号：US10316319

申请日：2002-12-10

申请人： Shin-Lin Shieh ,  Shin-Yuan Wang ,  Hui-Ming Wang

发明人： Shin-Lin Shieh ,  Shin-Yuan Wang ,  Hui-Ming Wang

IPC分类号： H04L7/00 ,  H04B1/66 ,  H04J3/06 ,  H04J13/00

CPC分类号： H04L1/0057 ,  H04B1/70735 ,  H04B1/7083 ,  H04L1/0045

摘要： A method and apparatus having a modified Reed-Solomon decoder is used for finding a specific code group used by a base station and the frame timing synchronization with the base station. The modified Reed-Solomon decoder uses a standard Reed-Solomon decoder and some reliability measurements computed from the received code word symbols. If the reliability of a received symbol is too low, this symbol is considered as erasure. By selecting code word symbols with higher reliabilities and erasing code word symbols with lower reliabilities, the symbol error probability is reduced and the performance is improved. Several modified Reed-Solomon decoders and a few decoding strategies are introduced in order to decode the received code word sequences with a power- and memory-effective method.

摘要翻译： 具有修改的Reed-Solomon解码器的方法和装置用于找到由基站使用的特定码组和与基站的帧定时同步。 修改的Reed-Solomon解码器使用标准Reed-Solomon解码器和从接收的码字符号计算的一些可靠性测量。 如果接收到的符号的可靠性太低，则该符号被认为是擦除。 通过选择具有较高可靠性的代码字符号并且以较低的可靠性擦除代码字符号，减少了符号错误概率并提高了性能。 引入了几个修改的里德 - 所罗门解码器和一些解码策略，以便用功率和记忆有效的方法对接收到的码字序列进行解码。

公开(公告)号：US20080244364A1

公开(公告)日：2008-10-02

申请号：US12114764

申请日：2008-05-03

申请人： Shin-Lin Shieh ,  Shin-Yuan Wang ,  Hui-Ming Wang

发明人： Shin-Lin Shieh ,  Shin-Yuan Wang ,  Hui-Ming Wang

IPC分类号： H03M13/05 ,  G06F11/07

CPC分类号： H04L1/0057 ,  H04B1/70735 ,  H04B1/7083 ,  H04L1/0045

摘要： A method and apparatus having a modified Reed-Solomon decoder is used for finding a specific code group used by a base station and the frame timing synchronization with the base station. The modified Reed-Solomon decoder uses a standard Reed-Solomon decoder and some reliability measurements computed from the received code word symbols. If the reliability of a received symbol is too low, this symbol is considered as erasure. By selecting code word symbols with higher reliabilities and erasing code word symbols with lower reliabilities, the symbol error probability is reduced and the performance is improved. Several modified Reed-Solomon decoders and a few decoding strategies are introduced in order to decode the received code word sequences with a power- and memory-effective method.

摘要翻译： 具有修改的Reed-Solomon解码器的方法和装置用于找到由基站使用的特定码组和与基站的帧定时同步。 修改的Reed-Solomon解码器使用标准Reed-Solomon解码器和从接收的码字符号计算的一些可靠性测量。 如果接收到的符号的可靠性太低，则该符号被认为是擦除。 通过选择具有较高可靠性的代码字符号并且以较低的可靠性擦除代码字符号，减少了符号错误概率并提高了性能。 引入了几个修改的里德 - 所罗门解码器和一些解码策略，以便用功率和记忆有效的方法对接收到的码字序列进行解码。

公开(公告)号：US20070283232A1

公开(公告)日：2007-12-06

申请号：US11750349

申请日：2007-05-18

申请人： Shin-Lin Shieh

发明人： Shin-Lin Shieh

IPC分类号： H03M13/03

CPC分类号： H03M13/3977 ,  H03M13/6502

摘要： A method for near maximum-likelihood sequential decoding is provided. According to the method, paths unlikely to become the maximum-likely path are deleted during decoding through a level threshold to reduce decoding complexity. Besides, the method performs maximum-likelihood decoding through sequential decoding by adopting a metric, so that a received signal does not have to go through a hard decision procedure.

摘要翻译： 提供近似最大似然序列解码的方法。 根据该方法，在解码期间通过级别阈值删除不可能成为最大可能路径的路径，以减少解码复杂度。 此外，该方法通过采用度量进行顺序解码来执行最大似然解码，使得接收信号不必经过硬判决过程。

公开(公告)号：US20070033478A1

公开(公告)日：2007-02-08

申请号：US11183345

申请日：2005-07-18

申请人： Shin-Lin Shieh ,  Shyh-Tzong Kuo ,  Po-Ning Chen ,  Yung-Hsiang Han

发明人： Shin-Lin Shieh ,  Shyh-Tzong Kuo ,  Po-Ning Chen ,  Yung-Hsiang Han

IPC分类号： H03M13/00

CPC分类号： H04L1/0038 ,  H04L1/0046 ,  H04L1/0059 ,  H04L1/0061

摘要： A method for BTFD decoding of signals having at least a message block of k-bit from a length candidate set S={s1, s2, . . . si}, wherein the k message bits are encoded by a CRC encoder and processed by an (n, l, m) convolutional encoder to generate encoded data that includes decoding a received frame to form a decoded sequence that includes an si-bit message and an error correcting code, calculating a δ(si) value, comparing δ(si) with a threshold value, repeating the decoding and calculating steps if δ(si) is greater than the threshold, and updating the threshold to be δ(si) if δ(si) is less than or equal to the threshold.

摘要翻译： 一种用于BTFD解码信号的方法，所述信号具有至少来自长度候选集合S = {s 1，...，N 2的k位的消息块。 。 。 其中k个消息比特由CRC编码器编码并由（n，l，m）卷积编码器进行处理以产生编码数据，该编码数据包括对接收到的帧进行解码以形成解码序列 其包括一个第i个位消息和一个错误校正码，计算一个增量（ΔLi）值，比较增量（s） 具有阈值，如果delta（s i> i>）大于阈值，则重复解码和计算步骤，如果delta（s i> i>），则将阈值更新为delta （s i i i i）小于或等于阈值。

公开(公告)号：US20050078738A1

公开(公告)日：2005-04-14

申请号：US10681164

申请日：2003-10-09

申请人： Shin-Lin Shieh ,  Chun-Ming Kuo

发明人： Shin-Lin Shieh ,  Chun-Ming Kuo

IPC分类号： H04B1/707

CPC分类号： H04B1/707

摘要： A communications system including a base station and a mobile unit wherein a size of information bits is negotiated between the base station and the mobile unit, an encoder encoding the information bits according to Reed-Muller codes, and a permuter permuting the encoded information bits. The information bits are transmitted between the base station and the mobile unit with the negotiated size. The communications system according to the present invention further comprises a depermuter depermuting the transmitted information bits, a transformer transforming the depermuted information bits with a reduced order determined according to the negotiated size, and a maximum likelihood (ML) decoder decoding the transmitted information bits.

摘要翻译： 一种包括基站和移动单元的通信系统，其中在基站和移动单元之间协商信息比特的大小，根据Reed-Muller码对信息比特进行编码的编码器，以及对编码的信息比特进行置换。 信息位在协商的大小之间在基站和移动单元之间传送。 根据本发明的通信系统还包括对所发送的信息比特进行解密的解密器，以根据协商的大小确定的减少次序对解密的信息比特进行变换的变换器以及对发送的信息比特进行解码的最大似然（ML）解码器。

公开(公告)号：US07975212B2

公开(公告)日：2011-07-05

申请号：US11924584

申请日：2007-10-25

申请人： Shin-Lin Shieh ,  Po-Ning Chen ,  Yung-Hsiang Han

发明人： Shin-Lin Shieh ,  Po-Ning Chen ,  Yung-Hsiang Han

IPC分类号： H03M13/03

CPC分类号： H03M13/3905 ,  H03M13/3977 ,  H03M13/4115

摘要： A sequential decoding method and a decoding apparatus are provided. According to the method, an open stack is adopted for storing a plurality of paths. When the codeword generated by an internal decoder in the decoding apparatus is incorrect, a codeword is generated again by using the paths stored in the open stack. Accordingly, the complexity of decoding is reduced.

摘要翻译： 提供了顺序解码方法和解码装置。 根据该方法，采用打开的堆栈来存储多个路径。 当由解码装置中的内部解码器生成的码字不正确时，通过使用存储在开放堆栈中的路径再次生成码字。 因此，解码的复杂度降低。

公开(公告)号：US20060236212A1

公开(公告)日：2006-10-19

申请号：US11105420

申请日：2005-04-14

申请人： Shuenn-Gi Lee ,  Shin-Lin Shieh ,  Wern-Ho Sheen

发明人： Shuenn-Gi Lee ,  Shin-Lin Shieh ,  Wern-Ho Sheen

IPC分类号： H03M13/00

CPC分类号： H03M13/1515 ,  H03M13/153 ,  H03M13/1535 ,  H03M13/1545 ,  H03M13/155

摘要： A decoder suitable for use in a digital communications system utilizing an RS(n′, k′) code modified from an RS(n, k) code receives n′-symbol vectors each including k′ message symbols and r′=n′-k′ parity symbols and decodes the n′-symbol vectors to correct errors therein, wherein n, k, n′, and k′ are integers, and k′

摘要翻译： 适用于使用从RS（n，k）码修改的RS（n'，k'）码的数字通信系统中的解码器接收每个包括k个消息符号的n个符号向量，并且r'= n'- k'个奇偶校验符号并对n'符号向量进行解码以校正其中的误差，其中n，k，n'和k'是整数，并且k' = R S（αi + 1）。 。 。 ，nk-1，其中R x（x）= r n n-1 x n-1 + r n' -2 n'-2 +。 。 。 + r <0>，以及用于使用其校正子以及一个擦除定位器多项式sigma（x）来找出每个n符号向量中的错误的位置和值的装置 ）。

公开(公告)号：US07974368B2

公开(公告)日：2011-07-05

申请号：US11902549

申请日：2007-09-24

申请人： Shin-Lin Shieh ,  Po-Ning Chen ,  Yung-Hsiang Han

发明人： Shin-Lin Shieh ,  Po-Ning Chen ,  Yung-Hsiang Han

IPC分类号： H04L27/06 ,  H03K9/00

CPC分类号： H04L25/03171 ,  H03M13/2957 ,  H03M13/3905 ,  H03M13/6337 ,  H03M13/658 ,  H04B1/69 ,  H04L1/005 ,  H04L1/0055 ,  H04L1/0066 ,  H04L1/208

摘要： A decoding method and system for real-time wireless channel estimation, which decodes a received signal with a noise. The received signal is coded by a concatenation code. At first, the received signal is performed a certain amount of decoding by a Max-Log-MAP decoding procedure. Next, an estimated amplitude of the received signal and an estimated variance of a noise are computed. Then, the received signal is adjusted in accordance with the estimated amplitude and the estimated variance to thereby produce an adjusted received signal. Finally, the adjusted received signal is decoded by a Log-Map decoding procedure.

摘要翻译： 一种用于实时无线信道估计的解码方法和系统，其对具有噪声的接收信号进行解码。 接收到的信号由级联代码编码。 首先，通过Max-Log-MAP解码过程对接收到的信号进行一定量的解码。 接下来，计算接收信号的估计振幅和噪声的估计方差。 然后，根据估计的振幅和估计的方差来调整接收的信号，从而产生经调整的接收信号。 最后，通过Log-Map解码程序对经调整的接收信号进行解码。