公开(公告)号：US20130003797A1

公开(公告)日：2013-01-03

申请号：US13494355

申请日：2012-06-12

申请人： Chia-Pin CHEN ,  Tai-Yuan Cheng ,  Chang-Lung Hsiao ,  Ren-Jr Chen

发明人： Chia-Pin CHEN ,  Tai-Yuan Cheng ,  Chang-Lung Hsiao ,  Ren-Jr Chen

IPC分类号： H04B1/38

CPC分类号： G06F15/167

摘要： According to one exemplary embodiment of a universal modem system, multiple digital signal processors (DSPs) are configured to perform at least one streaming-based task, or at least one block-based task, or both of the tasks. At least one concatenate memory is configured to store data for the at least one streaming-based task At least one concatenate bus connects at least one concatenate memory and the plurality of DSPs serially for performing the at least one streaming-based task. At least one concatenate memory is configured to store the data for the at least one streaming-based task. At least one public bus connects the plurality of DSPs and the at least one shared memory for performing the at least one block-based tasks.

摘要翻译： 根据通用调制解调器系统的一个示例性实施例，多个数字信号处理器（DSP）被配置为执行至少一个基于流的任务，或至少一个基于块的任务，或两个任务。 至少一个级联存储器被配置为存储用于至少一个基于流的任务的数据。至少一个级联总线连接至少一个连接存储器和多个DSP，用于执行至少一个基于流的任务。 至少一个级联存储器被配置为存储用于至少一个基于流的任务的数据。 至少一个公共总线连接多个DSP和至少一个共享存储器，用于执行至少一个基于块的任务。

公开(公告)号：US07974358B2

公开(公告)日：2011-07-05

申请号：US11586654

申请日：2006-10-26

申请人： Chang-Lan Tsai ,  Chang-Lung Hsiao ,  Ren-Jr Chen ,  Char-Dir Chung

发明人： Chang-Lan Tsai ,  Chang-Lung Hsiao ,  Ren-Jr Chen ,  Char-Dir Chung

IPC分类号： H04L5/12

CPC分类号： H04L27/2626 ,  H04L25/067 ,  H04L27/2647

摘要： An orthogonal frequency division multiplexing (OFDM) system provided for communication includes an OFDM transmitter and an OFDM receiver. The OFDM transmitter may be configured to transmit OFDM signals through a communication channel and may include a channel encoder configured to encode a plurality of information bits and an interleaver configured to interleave the channel-encoded information bits. The OFDM transmitter may also include a mapper configured to map the interleaved channel-encoded information bits into mapped multi-level symbols. The OFDM transmitter may also include a dispersive encoder that is configured to dispersively encode the mapped symbols. The OFDM receiver may be configured to receive the transmitted OFDM signals and to decode the received OFDM signals iteratively based on soft decision methods.

摘要翻译： 为通信提供的正交频分复用（OFDM）系统包括OFDM发射机和OFDM接收机。 OFDM发送器可以被配置为通过通信信道发送OFDM信号，并且可以包括被配置为对多个信息比特进行编码的信道编码器和被配置为交织信道编码的信息比特的交织器。 OFDM发射机还可以包括配置成将交织的信道编码信息比特映射到映射的多级符号中的映射器。 OFDM发射机还可以包括被配置为对映射的符号进行分散编码的色散编码器。 OFDM接收机可以被配置为接收所发射的OFDM信号并且基于软判决方法迭代地解码所接收的OFDM信号。

公开(公告)号：US07321550B2

公开(公告)日：2008-01-22

申请号：US10778087

申请日：2004-02-17

申请人： Yung-An Kao ,  Chang-Lung Hsiao ,  Po-Lin Chiu ,  Shih-Kai Lee

发明人： Yung-An Kao ,  Chang-Lung Hsiao ,  Po-Lin Chiu ,  Shih-Kai Lee

IPC分类号： H04J11/00

CPC分类号： H04L25/03159 ,  H04L2025/03414 ,  H04L2025/03522

摘要： An equalization method suitable for use in a receiver in an orthogonal frequency division multiplexing (OFDM) system utilizing a plurality of sub-carriers. The receiver includes an outer receiver for decoding. The equalization method includes receiving an input signal including at least one preamble symbol containing a training sequence and a plurality of informative OFDM symbols each containing a serial stream of samples, and performing compensations for each of the informative OFDM symbols. Compensation for each of the informative OFDM symbols includes converting the serial stream of samples into parallel samples, performing a fast Fourier transform (FFT) of the parallel samples to obtain a plurality of data symbols, each data symbol corresponding to a sub-carrier, compensating the data symbols for at least one first phase distortion and at least one second phase distortion, and providing at least one amplitude distortion factor to the outer receiver.

摘要翻译： 一种适用于使用多个子载波的正交频分复用（OFDM）系统中的接收机中的均衡方法。 接收机包括用于解码的外部接收机。 所述均衡方法包括：接收包括包含训练序列的至少一个前导码符号的输入信号和包含串行串流样本的多个信息OFDM符号，以及对每个信息OFDM符号执行补偿。 每个信息OFDM符号的补偿包括将样本的串行流转换为并行采样，执行并行采样的快速傅里叶变换（FFT）以获得多个数据符号，每个数据符号对应于子载波，补偿 所述数据符号用于至少一个第一相位失真和至少一个第二相位失真，并且向所述外部接收器提供至少一个幅度失真因子。

公开(公告)号：US07450658B2

公开(公告)日：2008-11-11

申请号：US11882483

申请日：2007-08-02

申请人： Jiann-An Tsai ,  Shih-Kai Lee ,  Chang-Lung Hsiao

发明人： Jiann-An Tsai ,  Shih-Kai Lee ,  Chang-Lung Hsiao

IPC分类号： H04L7/02

CPC分类号： H04L5/0026 ,  H04B7/0669 ,  H04B7/0671 ,  H04B7/0837 ,  H04L27/2602 ,  H04L27/2607 ,  H04L27/2647

摘要： At the transmitter of a transmitter and receiver apparatus for Multiple Input/Multiple Output MultiCarrier-Code Division Multiple Access (MIMO MC-CDMA) systems, modified orthogonal transmit diversity (MOTD) encoders are used for increasing space and time transmission diversity. A P-way combiner is used to connect the MOTD encoders and P multi-carrier modulators. Each modulator is connected to a set of antennas. At the receiver, each multi-carrier demodulator has an amplitude/phase compensator to compensate distortion at every sub-carrier. Similarly, a combiner is used to connect the demodulators and the MOTD decoders. As a result, space, time, and frequency diversity can be explored.

摘要翻译： 在用于多输入/多输出多载波码分多址（MIMO MC-CDMA）系统的发射机和接收机装置的发射机上，使用修改的正交发射分集（MOTD）编码器来增加空间和时间传输分集。 P路组合器用于连接MOTD编码器和P多载波调制器。 每个调制器连接到一组天线。 在接收机处，每个多载波解调器具有幅度/相位补偿器，用于补偿每个子载波的失真。 类似地，组合器用于连接解调器和MOTD解码器。 因此，可以探索空间，时间和频率多样性。

公开(公告)号：US20080037682A1

公开(公告)日：2008-02-14

申请号：US11882483

申请日：2007-08-02

申请人： Jiann-An Tsai ,  Shih-Kai Lee ,  Chang-Lung Hsiao

发明人： Jiann-An Tsai ,  Shih-Kai Lee ,  Chang-Lung Hsiao

IPC分类号： H04B7/02

CPC分类号： H04L5/0026 ,  H04B7/0669 ,  H04B7/0671 ,  H04B7/0837 ,  H04L27/2602 ,  H04L27/2607 ,  H04L27/2647

摘要： The invention relates to an apparatus of transmitter and receiver for MIMO MC-CDMA systems. At the transmitter, modified orthogonal transmit diversity (MOTD) encoders are used for increasing space and time transmission diversity. A P-way combiner is used to connect the MOTD encoders and P multi-carrier modulators. Each modulator is connected to a set of antennas. At the receiver, each multi-carrier demodulator has an amplitude/phase compensator to compensate distortion at every sub-carrier. Similarly, a combiner is used to connect the demodulators and the MOTD decoders. Upon the invention, the space, time, and frequency diversity can be explored.

摘要翻译： 本发明涉及用于MIMO MC-CDMA系统的发射机和接收机的装置。 在发射机处，使用修正的正交发射分集（MOTD）编码器来增加空间和时间的传输分集。 P路组合器用于连接MOTD编码器和P多载波调制器。 每个调制器连接到一组天线。 在接收机处，每个多载波解调器具有幅度/相位补偿器，用于补偿每个子载波的失真。 类似地，组合器用于连接解调器和MOTD解码器。 根据本发明，可以探索空间，时间和频率多样性。

公开(公告)号：US07330513B2

公开(公告)日：2008-02-12

申请号：US10868804

申请日：2004-06-17

申请人： Jiann-An Tsai ,  Shih-Kai Lee ,  Chang-Lung Hsiao

发明人： Jiann-An Tsai ,  Shih-Kai Lee ,  Chang-Lung Hsiao

IPC分类号： H04K1/10

CPC分类号： H04L5/0026 ,  H04B7/0669 ,  H04B7/0671 ,  H04B7/0837 ,  H04L27/2602 ,  H04L27/2607 ,  H04L27/2647

摘要： The invention relates to an apparatus of transmitter and receiver for Multiple Input/Multiple Output MultiCarrier-Code Division Multiple Access (MIMO MC-CDMA) systems. At the transmitter, modified orthogonal transmit diversity (MOTD) encoders are used for increasing space and time transmission diversity. A P-way combiner is used to connect the MOTD encoders and P multi-carrier modulators. Each modulator is connected to a set of antennas. At the receiver, each multi-carrier demodulator has an amplitude/phase compensator to compensate distortion at every sub-carrier. Similarly, a combiner is used to connect the demodulators and the MOTD decoders. Upon the invention, the space, time, and frequency diversity can be explored.

摘要翻译： 本发明涉及用于多输入/多输出多载波码分多址（MIMO MC-CDMA）系统的发射机和接收机的装置。 在发射机处，使用修正的正交发射分集（MOTD）编码器来增加空间和时间的传输分集。 P路组合器用于连接MOTD编码器和P多载波调制器。 每个调制器连接到一组天线。 在接收机处，每个多载波解调器具有幅度/相位补偿器，用于补偿每个子载波的失真。 类似地，组合器用于连接解调器和MOTD解码器。 根据本发明，可以探索空间，时间和频率多样性。

公开(公告)号：US08750874B2

公开(公告)日：2014-06-10

申请号：US12034497

申请日：2008-02-20

申请人： Chie-Ming Chou ,  Chang-Lung Hsiao

发明人： Chie-Ming Chou ,  Chang-Lung Hsiao

IPC分类号： H04W36/00

CPC分类号： H04W8/30 ,  H04W24/02 ,  H04W36/00 ,  H04W48/08 ,  H04W48/16

摘要： A method of performing a handover process in a wireless multi-hop communication network, the method comprising requesting neighborhood communication information regarding channel condition among access stations in the neighborhood of a mobile station, the neighborhood communication information including communication information related to a link between a first station and a second station in the wireless multi-hop communication network, obtaining the communication information related to the link between the first station and the second station, sending the communication information from the first station to a mobile station in the wireless multi-hop communication network, and configuring the mobile station based on the communication information so as to switch the mobile station to the second station.

摘要翻译： 一种在无线多跳通信网络中执行切换处理的方法，所述方法包括：请求关于移动站附近的接入站中的信道状态的邻域通信信息，所述邻域通信信息包括与所述移动站中的链路有关的通信信息 第一站和第二站在无线多跳通信网络中获取与第一站和第二站之间的链路有关的通信信息，在无线多​​跳中将通信信息从第一站发送到移动站 通信网络，并且基于通信信息配置移动站，以便将移动站切换到第二站。

公开(公告)号：US08331480B2

公开(公告)日：2012-12-11

申请号：US12146421

申请日：2008-06-25

申请人： Yan-Xiu Zheng ,  Chang-Lung Hsiao ,  Wen-Sheng Feng

发明人： Yan-Xiu Zheng ,  Chang-Lung Hsiao ,  Wen-Sheng Feng

IPC分类号： H04L27/00

CPC分类号： H04J13/107 ,  H04B2201/70701 ,  H04L27/2605

摘要： A method forms a preamble sequence in a wireless communication system. The method comprises determining a value K related to a time-domain characteristic of the wireless communication system so that a time-domain preamble sequence includes a number of K waveforms similar in shape to one another having a linear phase shift, identifying a first preamble sequence for a first band, the first preamble sequence having a first length not dividable by K, identifying at least one second preamble sequence each for a second band, the at least one second preamble sequence having at least one second length, identifying the length of a third preamble sequence, the length of the third preamble sequence equal to a sum of the first length and the at least one second length, determining whether the time-domain characteristic is maintained when the one or more of the at least one second preamble sequence is concatenated with the first preamble sequence, modifying one or more of the at least one second preamble sequence if the time-domain characteristic is not maintained when concatenated, and forming the third preamble sequence by concatenating the first preamble sequence and the at least one second preamble sequence having one or more second preamble sequence modified.

摘要翻译： 一种方法在无线通信系统中形成前导序列。 该方法包括确定与无线通信系统的时域特性相关的值K，使得时域前导序列包括具有线性相移的形状彼此类似的K个波形的数目，识别第一前同步码序列 对于第一频带，第一前导码序列具有不能由K划分的第一长度，标识每个用于第二频带的至少一个第二前同步码序列，所述至少一个第二前同步码序列具有至少一个第二长度， 第三前导码序列，第三前导序列的长度等于第一长度和至少一个第二长度的和，确定当至少一个第二前导码序列中的一个或多个是第一前导序列是否保持时域特性时 与第一前同步码序列连接，如果不保持时域特征，修改至少一个第二前同步码序列中的一个或多个 n级联，并且通过连接具有修改的一个或多个第二前同步码序列的第一前同步码序列和至少一个第二前同步码序列来形成第三前导序列。

公开(公告)号：US20050265224A1

公开(公告)日：2005-12-01

申请号：US10995466

申请日：2004-11-24

申请人： Shih-Kai Lee ,  Po-Lin Chiu ,  Chang-Lung Hsiao ,  Jiann-An Tsai

发明人： Shih-Kai Lee ,  Po-Lin Chiu ,  Chang-Lung Hsiao ,  Jiann-An Tsai

IPC分类号： H04B1/69 ,  H04B1/707 ,  H04B1/713 ,  H04J11/00

CPC分类号： H04J13/12 ,  H04J13/0044

摘要： An apparatus for generating a 2D spreading code and method for the same are proposed. The apparatus for generating the 2D spreading code includes a column counter, a row counter, a codeword selector, and a logic unit. The logic unit performs logic operations on the output of the column counter, the row counter, and the codeword selector to generate the 2D spreading code of desired order designated by the codeword selector. The 2D spreading code includes 4 2×2 initial matrixes for generating 4i codes for 4i users in the ith order. The apparatus for generating the 2D spreading code according to the present invention is advantageously used in OFDM system to increase the number of subscribers with reduced interference.

摘要翻译： 提出了一种用于生成2D扩展码的装置及其方法。 用于生成2D扩展码的装置包括列计数器，行计数器，码字选择器和逻辑单元。 逻辑单元对列计数器，行计数器和码字选择器的输出执行逻辑运算，以产生由码字选择器指定的期望顺序的2D扩展码。 2D扩展码包括4×2×2个初始矩阵，用于按照第i个顺序为4位用户生成4位代码。 根据本发明的用于生成2D扩展码的装置在OFDM系统中有利地用于增加具有减小的干扰的用户数量。

公开(公告)号：US08532012B2

公开(公告)日：2013-09-10

申请号：US12325540

申请日：2008-12-01

申请人： Chun-Yen Wang ,  Chang-Lung Hsiao ,  Tzu-Ming Lin

发明人： Chun-Yen Wang ,  Chang-Lung Hsiao ,  Tzu-Ming Lin

IPC分类号： H04H20/71

CPC分类号： H04L1/0003 ,  H04L1/0026 ,  H04L1/0068 ,  H04L1/0071 ,  H04L1/1819 ,  H04L2001/0093

摘要： Methods and apparatuses for reception of point-to-multipoint (PTM) transmissions in a wireless communication system including a set of receiving devices. The method includes receiving location information respectively associated with each of a plurality of PTM data versions, and retrieving the plurality of PTM data versions using the location information. The method also includes combining the retrieved plurality of PTM data versions to generate a combined PTM data version, and decoding the combined PTM data version.

摘要翻译： 在包括一组接收装置的无线通信系统中接收点对多点（PTM）传输的方法和装置。 该方法包括接收分别与多个PTM数据版本中的每一个相关联的位置信息，以及使用位置信息检索多个PTM数据版本。 该方法还包括组合检索的多个PTM数据版本以生成组合的PTM数据版本，以及对组合的PTM数据版本进行解码。