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    • 4. 发明申请
    • Handover Method for Communication Networks
    • 通信网络切换方法
    • US20090207804A1
    • 2009-08-20
    • US12034497
    • 2008-02-20
    • Chie-Ming CHOUChang-Lung HSIAO
    • Chie-Ming CHOUChang-Lung HSIAO
    • H04Q7/00
    • H04W8/30H04W24/02H04W36/00H04W48/08H04W48/16
    • 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.
    • 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。
    • 5. 发明申请
    • Method of and Generator for Generating Preamble Sequences in Communication Systems
    • 在通信系统中生成前导序列的方法和发生器
    • US20090016464A1
    • 2009-01-15
    • US12146421
    • 2008-06-25
    • Yan-Xiu ZHENGChang-Lung HSIAOWen-Sheng FENG
    • Yan-Xiu ZHENGChang-Lung HSIAOWen-Sheng FENG
    • H04L27/00
    • H04J13/107H04B2201/70701H04L27/2605
    • 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.
    • 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。
    • 6. 发明授权
    • Method of equalization in an OFDM system
    • OFDM系统中的均衡方法
    • US07321550B2
    • 2008-01-22
    • US10778087
    • 2004-02-17
    • Yung-An KaoChang-Lung HsiaoPo-Lin ChiuShih-Kai Lee
    • Yung-An KaoChang-Lung HsiaoPo-Lin ChiuShih-Kai Lee
    • H04J11/00
    • H04L25/03159H04L2025/03414H04L2025/03522
    • 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.
    • 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。
    • 7. 发明授权
    • Signal detecting method and receiver using the same
    • 信号检测方法及接收机采用相同方式
    • US08295374B2
    • 2012-10-23
    • US12326161
    • 2008-12-02
    • Chih-Cheng KuoChang-Lung HsiaoWern-Ho Sheen
    • Chih-Cheng KuoChang-Lung HsiaoWern-Ho Sheen
    • H04K1/10
    • H04L25/0204H04L5/0021H04L25/0246
    • A signal detecting method and a receiver using the same are provided. The method includes the following steps. A receiving signal vector y is received through a number of channels, wherein the receiving signal vector y corresponds to a transmitting signal vector x transmitted by at least one of the channels. A channel matrix H is determined, wherein the channel matrix H represents at least one of the channels. A factorization matrix D is chosen, wherein D is invertible to make the channel matrix H expressed as H={tilde over (H)}D, and {tilde over (H)} is a corresponding channel matrix. The factorization matrix D is determined to make an expected value of the signal estimate error become smaller. The receiving signal vector y is detected to estimate the transmitting signal vector x according to the corresponding channel matrix {tilde over (H)} and the factorization matrix D.
    • 提供了一种信号检测方法和使用该信号检测方法的接收机。 该方法包括以下步骤。 通过多个信道接收接收信号矢量y,其中接收信号矢量y对应于由至少一个信道发送的发射信号矢量x。 确定信道矩阵H,其中信道矩阵H表示至少一个信道。 选择因式分解矩阵D,其中D是可逆的,以使得信道矩阵H表示为H = {t(t),(H)} D,并且(H)}上的波形为相应的信道矩阵。 因子分解矩阵D被确定为使得信号估计误差的期望值变小。 检测接收信号矢量y,以根据相应的信道矩阵((H)}和分解矩阵D中的波形符号来估计发送信号向量x。
    • 8. 发明申请
    • METHODS AND APPARATUSES RELATING TO MULTI-RESOLUTION TRANSMISSIONS WITH MIMO SCHEME
    • 与MIMO方案相关的多分辨率传输的方法和设备
    • US20110033011A1
    • 2011-02-10
    • US12817449
    • 2010-06-17
    • Ren-Jr ChenChang-Lung Hsiao
    • Ren-Jr ChenChang-Lung Hsiao
    • H04L27/36H04L27/00
    • H04L27/3488H04B7/0413H04B7/0669H04B7/0854H04B7/0871
    • A method of providing a multi-resolution transmission with a MIMO scheme may include employing a selected modulation scheme to generate a first data stream including basic information and a second data stream including both enhanced information and the basic information, and employing a modulation and multiple input/multiple output (MIMO) scheme to generate data for transmission. The data for transmission may employ a combination of spatial multiplexing and transmit diversity techniques. A corresponding apparatus is also provided. Another method of providing selective recovery of received data at a mobile terminal may include receiving data at a mobile terminal including at least one antenna, receiving information indicative of a data reception condition at the mobile terminal, determining, between spatial multiplexing and transmit diversity mode options, a reception mode to be employed for decoding the data received based on the information indicative of the data reception condition. A corresponding apparatus is also provided.
    • 提供具有MIMO方案的多分辨率传输的方法可以包括采用所选择的调制方案来生成包括基本信息的第一数据流和包括增强信息和基本信息的第二数据流,并且采用调制和多输入 /多输出(MIMO)方案来生成用于传输的数据。 用于传输的数据可以采用空间复用和发射分集技术的组合。 还提供了相应的装置。 在移动终端处提供对接收到的数据的选择性恢复的另一种方法可以包括在包括至少一个天线的移动终端处接收数据,在移动终端处接收指示数据接收状况的信息,在空间复用和发射分集模式选项之间确定 基于表示数据接收条件的信息,接收模式被用于对接收到的数据进行解码。 还提供了相应的装置。