Transmitter and method for transmitting and receiving of voice data for VoIP service
    1.
    发明授权
    Transmitter and method for transmitting and receiving of voice data for VoIP service 有权
    用于VoIP服务的语音数据的发送和接收的发送器和方法

    公开(公告)号:US08571009B2

    公开(公告)日:2013-10-29

    申请号:US12533982

    申请日:2009-07-31

    IPC分类号: H04L5/12

    CPC分类号: H04L12/66

    摘要: Provided are a transmitting apparatus and voice data transmitting and receiving methods for providing VoIP services. When a call is started and an analog signal including a voice signal is input, the transmitting apparatus divides the analog signal into a plurality of voice data packets for transmission. Here, the plurality of voice data packets are generated by sampling with different phases in the same frequency. In addition, the transmitting apparatus inserts a time indication bit that is changed every transmission period into each of the voice data packets and transmits the voice data packets, and distinguishes voice data corresponding to a current transmission period based on the time indication bit.

    摘要翻译: 提供了一种用于提供VoIP服务的发送装置和语音数据发送和接收方法。 当呼叫开始并且包括语音信号的模拟信号被输入时,发送装置将模拟信号分成多个语音数据分组进行发送。 这里,通过以相同频率的不同相位采样来生成多个语音数据分组。 此外,发送装置将每个发送周期变化的时间指示比特插入到每个语音数据分组中,并发送语音数据分组,并根据时间指示比特来区分与当前的发送周期对应的语音数据。

    Row-vector norm comparison method and row-vector norm comparison apparatus for inverse matrix
    2.
    发明授权
    Row-vector norm comparison method and row-vector norm comparison apparatus for inverse matrix 有权
    行向量范数比较法和反向矩阵的行向量范数比较装置

    公开(公告)号:US08521799B2

    公开(公告)日:2013-08-27

    申请号:US12165209

    申请日:2008-06-30

    IPC分类号: G06F7/32 G06F7/38

    CPC分类号: G06F17/16

    摘要: Disclosed are a row-vector norm comparison method and a row-vector norm comparison apparatus for an inverse matrix. A row-vector norm comparison apparatus includes: an input matrix processing module that receives and combines constituent elements of a matrix; a cofactor operation module that multiplexes the combination result of the constituent elements to calculate factors constituting an adjoint matrix; a square calculation module that squares the calculated factors; a summation module that selects a predetermined number of factors among the squared factors and sums the selected factors to calculate the norms of row vectors in an inverse matrix; and a norm comparison module that outputs a comparison result of the calculated norms of the row vectors. A row-vector norm comparison method includes: combining constituent elements of a matrix to generates a plurality of combination results of the constituent elements; multiplexing the combination results to calculate factors constituting an adjoint matrix of the matrix; squaring the calculated factors and selectively summing the squared factors; and calculating the norms of row vectors in an inverse matrix and comparing the calculated norms of the row vectors. With this configuration, row-vector norm comparison for an inverse matrix can be performed with a design structure. Therefore, it is not necessary to use an existing complex operation method. In addition, low power consumption of the multiple antenna system can be achieved, and efficiency of the design structure can be improved.

    摘要翻译: 公开了用于逆矩阵的行向量范数比较方法和行向量范数比较装置。 行向量范数比较装置包括:输入矩阵处理模块,其接收并组合矩阵的组成元素; 辅助因子操作模块,其将所述组成元素的组合结果复用以计算构成伴随矩阵的因子; 平方计算模块,对计算的因子进行平方; 求和模块,其选择平方因子中的预定数量的因子,并且对所选择的因子进行求和以计算逆向矩阵中的行向量的范数; 以及范数比较模块,其输出所计算的行向量范围的比较结果。 行向量范数比较方法包括:组合矩阵的组成元素以生成组成元素的多个组合结果; 将组合结果复用以计算构成矩阵的伴随矩阵的因子; 平均计算因子并选择性求和平方因子; 以及计算逆矩阵中的行向量的范数并比较所计算的行向量的范数。 利用这种配置,可以用设计结构来执行逆矩阵的行向量范数比较。 因此,不需要使用现有的复杂操作方法。 此外,可以实现多天线系统的低功耗,并且可以提高设计结构的效率。

    Apparatus for cancelling DC offset and method thereof
    4.
    发明授权
    Apparatus for cancelling DC offset and method thereof 有权
    用于消除DC偏移的装置及其方法

    公开(公告)号:US08170147B2

    公开(公告)日:2012-05-01

    申请号:US11721139

    申请日:2005-09-06

    IPC分类号: H04L25/06

    摘要: An apparatus and method for canceling a DC offset efficiently removes the DC offset by calculating the DC offset after acquiring synchronization in a terminal receiver used for an orthogonal frequency division multiplexing system. The apparatus for canceling the DC offset includes an adding/averaging unit (130), an accumulator (140), a synchronization determiner (150), and a pulse density modulation signal generator (160). The adding and averaging the added input data signals over one frame. The accumulator (140) outputs a DC offset control value by successively accumulating the DX offsets calculated from the adding and averaging unit. The synchronization determiner (150) determines whether to output the DC offset control value provided by the accumulator (140) based on synchronization information. The pulse density modulation signal generator (160) generates a digital pulse density modulation signal based on a representative value provided by the synchronization determiner (150).

    摘要翻译: 用于消除DC偏移的装置和方法通过在用于正交频分复用系统的终端接收机中获取同步之后计算DC偏移来有效地去除DC偏移。 用于消除DC偏移的装置包括加法/平均单元(130),累加器(140),同步确定器(150)和脉冲密度调制信号发生器(160)。 在一帧内添加和平均添加的输入数据信号。 累加器(140)通过连续积累从加法和平均单元计算的DX偏移量来输出DC偏移控制值。 同步确定器(150)基于同步信息确定是否输出由累加器(140)提供的DC偏移控制值。 脉冲密度调制信号发生器(160)根据由同步确定器(150)提供的代表值产生数字脉冲密度调制信号。

    METHOD AND APPARATUS OF TRANSMITTING DOWNLINK CONTROL SIGNAL IN WIRELESS COMMUNICATION SYSTEM
    5.
    发明申请
    METHOD AND APPARATUS OF TRANSMITTING DOWNLINK CONTROL SIGNAL IN WIRELESS COMMUNICATION SYSTEM 审中-公开
    无线通信系统中发送下行链路控制信号的方法与装置

    公开(公告)号:US20120093261A1

    公开(公告)日:2012-04-19

    申请号:US13273423

    申请日:2011-10-14

    IPC分类号: H04L27/06 H04L27/00

    摘要: Disclosed herein are a method and an apparatus for transmitting a downlink control signal in a wireless communication system. The apparatus for transmitting a downlink control signal includes: a preamble symbol generator generating preamble orthogonal frequency division multiplexing (OFDM) symbols based on a first pilot pattern among pilot patterns for each of the plurality of transmit antennas; a midamble symbol generator generating midamble OFDM symbols based a second pilot pattern excluding the first pilot pattern from the pilot patterns for each of the plurality of transmit antennas; an IFFT unit performing inverse fast Fourier transform (IFFT) for each transmit antenna on the preamble OFDM symbol and the midamble OFDM symbol; and a plurality of transmit antennas transmitting the preamble OFDM symbols and the midamble OFDM symbols.

    摘要翻译: 这里公开了一种用于在无线通信系统中发送下行链路控制信号的方法和装置。 用于发送下行链路控制信号的装置包括:前导码符号生成器,用于在多个发送天线中的每一个的导频模式中基于第一导频模式生成前导码正交频分复用(OFDM)符号; 基于针对所述多个发射天线中的每一个的导频模式,基于不包括所述第一导频模式的第二导频模式生成中间码OFDM符号的中间码符号发生器; IFFT单元对前导OFDM符号和中间码OFDM符号上的每个发射天线进行快速傅立叶逆变换(IFFT); 以及发送前导OFDM符号和中间码OFDM符号的多个发送天线。

    METHOD AND APPARATUS FOR TRANSMITTING RESOURCE ALLOCATION INFORMATION
    6.
    发明申请
    METHOD AND APPARATUS FOR TRANSMITTING RESOURCE ALLOCATION INFORMATION 有权
    用于发送资源分配信息的方法和装置

    公开(公告)号:US20120051298A1

    公开(公告)日:2012-03-01

    申请号:US13140334

    申请日:2009-07-17

    IPC分类号: H04W72/04

    CPC分类号: H04W72/042

    摘要: Provided are a method and an apparatus for transmitting resource allocation information. In the case when a wireless resource for a new terminal is fixedly allocated to a fixed allocation zone, the apparatus for transmitting resource allocation information determines a resource allocation method of allocating the wireless resource and determines an allocation form of a resource that is allocated by a resource allocation method to select any one information displaying method of a plurality of information displaying methods of displaying allocation information on the allocated resource on the basis of the determined resource allocation method and resource allocation form. Next, the resource allocation information is generated and transmitted on the basis of the selected displaying method.

    摘要翻译: 提供了一种用于传送资源分配信息的方法和装置。 在将新终端的无线资源固定地分配给固定分配区域的情况下,用于发送资源分配信息的装置决定分配无线资源的资源分配方法,并且确定分配给资源的资源的分配形式 资源分配方法,用于基于所确定的资源分配方法和资源分配形式来选择在所分配的资源上显示分配信息的多种信息显示方法的任何一种信息显示方法。 接下来,基于所选择的显示方法生成并发送资源分配信息。

    Demodulation apparatus for efficiently embodying adaptive modulation and coding method in OFDMA based packet communication system and method thereof
    7.
    发明授权
    Demodulation apparatus for efficiently embodying adaptive modulation and coding method in OFDMA based packet communication system and method thereof 有权
    一种用于在基于OFDMA的分组通信系统中有效实现自适应调制和编码方法的解调装置及其方法

    公开(公告)号:US08068510B2

    公开(公告)日:2011-11-29

    申请号:US10583167

    申请日:2004-11-03

    IPC分类号: H04Q11/02

    摘要: Disclosed is a demodulation apparatus for receiving signals by an adaptive modulation and coding method, and demodulating the signals, in an OFDMA based packet communication system, comprising: a QAM demapper for performing QAM demapping to the received signals by a modulation method using a maximum modulation ratio, until modulation methods for each of sub-channels are analyzed; a slot buffer for storing the data outputted from the QAM demapper; a channel decoder for decoding the data stored in the slot buffer and analyzing modulation methods for each sub-channels and transferring the analyzed modulation methods to the QAM demapper; and in at the same time, reading valid data from the data stored in the slot buffer, based on the analyzed modulation methods for each sub-channels, and demodulating the valid data.

    摘要翻译: 公开了一种用于在基于OFDMA的分组通信系统中通过自适应调制和编码方法接收信号并解调信号的解调装置,包括:QAM解映射器,用于通过使用最大调制的调制方法对所接收的信号进行QAM解映射 比例,直到分析每个子信道的调制方法; 用于存储从QAM解映射器输出的数据的时隙缓冲器; 用于解码存储在时隙缓冲器中的数据并分析每个子信道的调制方法并将分析的调制方法传送到QAM解映射器的信道解码器; 并且同时,基于针对每个子信道的分析的调制方法和解调有效数据,从存储在时隙缓冲器中的数据读取有效数据。

    Log likelihood ratio calculation method, transmit signal detection method, and receiver
    8.
    发明授权
    Log likelihood ratio calculation method, transmit signal detection method, and receiver 有权
    对数似然比计算方法,发射信号检测方法和接收机

    公开(公告)号:US08040980B2

    公开(公告)日:2011-10-18

    申请号:US12142600

    申请日:2008-06-19

    IPC分类号: H04L27/06 H03K9/00 H04L27/00

    摘要: The present invention relates to a log-likelihood ratio calculation method, a transmitting signal detection method, and a receiver. The present invention estimates a channel on the basis of the received signal and rearranges a plurality of layers. Further, at the time of rearrangement of the layers, a symbol of a layer having the lowest reliability is considered for every constellation dot, and the successive interference for the remaining layers is removed corresponding to the constellation dots of the layer having the lowest reliability to set the transmitting symbol candidate vector. Furthermore, a log-likelihood ratio for every bit of the plurality of layers is calculated using the transmitting symbol candidate vector to decode the channel.

    摘要翻译: 本发明涉及对数似然比计算方法,发送信号检测方法和接收机。 本发明基于接收到的信号来估计信道并重排多个层。 此外,在层的重排时,对于每个星座点考虑具有最低可靠性的层的符号,并且对应于具有最低可靠性的层的星座点去除对剩余层的连续干扰, 设置发送符号候选向量。 此外,使用发送符号候选向量计算多个层中的每一比特的对数似然比,以解码该信道。

    Low density parity check encoder using costas array, and channel encoder of high speed portable internet system comprising the same and channel encoding method
    9.
    发明授权
    Low density parity check encoder using costas array, and channel encoder of high speed portable internet system comprising the same and channel encoding method 有权
    使用costas阵列的低密度奇偶校验编码器和包含相同和通道编码方法的高速便携式互联网系统的通道编码器

    公开(公告)号:US07954035B2

    公开(公告)日:2011-05-31

    申请号:US11722214

    申请日:2005-03-25

    IPC分类号: H03M13/00

    CPC分类号: H03M13/116 H03M13/1177

    摘要: The present invention provides an LDPC encoder, a channel encoder of a portable internet system including the LDPC encoder, and an encoding method thereof. The LDPC encoder according to the present invention generates a Costas array, shifts it, generates an analogous circulation parity check matrix having a repeated pattern from the shifted Costas array, and performs encoding by using the parity check matrix. With this LDPC encoder, complexity of encoding system may be reduced.

    摘要翻译: 本发明提供一种LDPC编码器,包括LDPC编码器的便携式互联网系统的信道编码器及其编码方法。 根据本发明的LDPC编码器生成Costas阵列,将其移位,从移位的Costas阵列生成具有重复模式的类似循环奇偶校验矩阵,并通过使用奇偶校验矩阵进行编码。 利用该LDPC编码器,可以减少编码系统的复杂性。

    Apparatus and method for calibration in a communication system
    10.
    发明授权
    Apparatus and method for calibration in a communication system 有权
    通信系统中的校准装置和方法

    公开(公告)号:US07940858B2

    公开(公告)日:2011-05-10

    申请号:US11635475

    申请日:2006-12-07

    IPC分类号: H04L27/00 H04B7/06

    摘要: In a calibration apparatus in a communication system, a modulation unit calculates a reference signal by modulating a downlink signal, and a digital Intermediate Frequency (IF) unit converts the reference signal to an intermediate frequency signal. An up-converter converts the intermediate frequency signal to a Radio Frequency (RF) signal, and a down-converter generates a received signal for each of the paths from the RF signal to be transmitted through each path. A calibrator calculates a correction value for each path and a delay value by using the reference signal and the received signal for each path.

    摘要翻译: 在通信系统中的校准装置中,调制单元通过调制下行链路信号来计算参考信号,并且数字中频(IF)单元将参考信号转换为中频信号。 上变频器将中频信号转换成射频(RF)信号,下变频器从RF信号中产生每个路径的接收信号,以通过每个路径传输。 校准器通过使用参考信号和每个路径的接收信号来计算每个路径的校正值和延迟值。