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    • 1. 发明申请
    • APPARATUS AND METHOD FOR I/Q OFFSET CANCELLATION IN SC-FDMA SYSTEM
    • 用于SC-FDMA系统中I / Q偏移消除的装置和方法
    • WO2012030028A1
    • 2012-03-08
    • PCT/KR2010/009578
    • 2010-12-30
    • INNOWIRELESS CO., LTD.JOUNG, JinsoupHA, KyeongminJI, SeunghwanLIM, YonghoonJANG, Byungkwan
    • JOUNG, JinsoupHA, KyeongminJI, SeunghwanLIM, YonghoonJANG, Byungkwan
    • H04J1/12
    • H04J1/16H04L27/2647H04L27/3854
    • The present invention relates to an apparatus and a method for eliminating I/Q offset in a receiver of a SC-FDMA system which improves performance of the system by accurate measurement and cancellation of I/Q offset in a receiver of a SC-FDMA system operating in a 3GPP LTE uplink. An apparatus for eliminating I/Q offset in a receiver of the SC-FDMA system constituting the receiver of the SC-FDMA system includes: a linear interpolation channel estimation unit for estimating channel using demodulation reference symbol (DMRS) that is a training sequence (X) corresponding to the discrete Fourier transformed signal (Y) that has passed through frame sync acquisition, frequency compensation and cyclic prefix elimination; a signal regeneration/cancellation unit for calculating I/Q offset (D = Y - Y') by subtracting the discrete Fourier transformed signal (Y) from the ideal discrete Fourier transformed signal (Y' = H'X) generated by using channel coefficient (H'), that is an output of the linear interpolation channel estimation unit, and the DMRS that is the training sequence (X); and an I/Q offset measurement/cancellation unit for generating VQ offset-free signal (Y NoDC = Y - D') by subtracting I/Q offset (D') having corrected phase and power of the VQ offset (D = Y - Y') from the discrete Fourier transformed signal (Y).
    • 本发明涉及一种用于消除SC-FDMA系统的接收机中的I / Q偏移的装置和方法,其通过在SC-FDMA系统的接收机中精确测量和消除I / Q偏移来提高系统的性能 在3GPP LTE上行链路中工作。 构成SC-FDMA系统的接收机的SC-FDMA系统的接收机中的I / Q偏移消除装置包括:线性内插信道估计单元,用于使用作为训练序列的解调参考符号(DMRS)来估计信道 X)对应于通过帧同步捕获,频率补偿和循环前缀消除的离散傅立叶变换信号(Y); 信号再生/消除单元,用于通过从使用信道系数产生的理想离散付里叶变换信号(Y'= H'X)中减去离散付里叶变换信号(Y)来计算I / Q偏移(D = Y-Y') (H'),即线性内插信道估计单元的输出,作为训练序列(X)的DMRS; 以及用于通过减去具有校正相位的I / Q偏移(D')和VQ偏移的功率(D = Y-Y')来产生VQ无偏移信号(YNoDC = Y-D')的I / Q偏移测量/消除单元 ')离散傅里叶变换信号(Y)。
    • 4. 发明申请
    • METHOD FOR AUTOMATICALLY CONTROLING VOLUME LEVEL FOR CALCULATING MOS
    • 用于自动控制体积计算MOS的方法
    • WO2007064122A1
    • 2007-06-07
    • PCT/KR2006/005030
    • 2006-11-28
    • INNOWIRELESS CO., LTDCHUNG, Jong TaeJOUNG, Jin SoupKWAK, Young SuKIM, Jin ManCHO, Hyun Seok
    • CHUNG, Jong TaeJOUNG, Jin SoupKWAK, Young SuKIM, Jin ManCHO, Hyun Seok
    • H04B17/00
    • G10L25/69H04M3/2236H04W24/00
    • The present invention relates to a method of automatically control ing the volume level of communication speech for Mean Opinion Score (MOS) measurement, which, before evaluating the quality of communication speech using a MOS measurement method, automatically controls the volume level of actual communication speech to a predetermined optimal level, thus improving the reliability of MOS values. The present invention provides a method of automatically control ing a volume level of communication speech for MOS measurement using MOS measurement equipment, the MOS measurement equipment calculating an MOS value based on results obtained by comparing a speech signal, which is received via a voice communication network, with a reference speech signal, the method comprising the steps of (a) when an audio signal, including a speech signal, is received from counterpart MOS measurement equipment in a predetermined format, measuring the volume level of the speech signal and comparing the volume level of the measured speech signal with a reference volume level; (b) transmitting a predetermined intrinsic audible frequency signal, which corresponds to 'proper,' 'excess' or 'insufficiency' information resulting from the comparison, to the counterpart MOS measurement equipment; and (c) the counterpart MOS measurement equipment interpreting the predetermined intrinsic audible frequency signal, which corresponds to the 'proper,' 'excess' or 'insufficiency' information, and controling the volume level of the communication speech.
    • 本发明涉及一种自动控制平均意见得分(MOS)测量的通信语音音量的方法,其在使用MOS测量方法评估通信语音的质量之前,自动控制实际通信语音的音量 达到预定的最佳电平,从而提高了MOS值的可靠性。 本发明提供了一种使用MOS测量设备自动控制用于MOS测量的通信语音的音量水平的方法,MOS测量设备基于通过比较通过语音通信网络接收的语音信号而获得的结果来计算MOS值 具有参考语音信号,所述方法包括以下步骤:(a)当以预定格式从对应的MOS测量设备接收包括语音信号的音频信号时,测量语音信号的音量,并比较音量 测量的语音信号的电平与参考音量电平; (b)将对应于比较产生的“适当”,“过剩”或“不足”信息的预定固有可听频率信号发送到对方的MOS测量设备; 和(c)对应的MOS测量设备,解释对应于“适当”,“过量”或“不足”信息的预定的内在可听频率信号,以及控制通信语音的音量。
    • 5. 发明申请
    • AUTOMATIC DETECTION APPARATUS FOR UL/DL CONFIGURATION IN LTE-TDD SIGNAL AND THE METHOD THEREBY
    • 用于LTE-TDD信号中UL / DL配置的自动检测装置及其方法
    • WO2012043937A1
    • 2012-04-05
    • PCT/KR2011/000076
    • 2011-01-06
    • INNOWIRELESS CO., LTD.JOUNG, JinsoupJI, SeunghwanLIM, YonghoonLEE, Jaesung
    • JOUNG, JinsoupJI, SeunghwanLIM, YonghoonLEE, Jaesung
    • H04B7/26H04J3/00
    • H04W24/00H04B17/318H04B17/382H04L5/0007H04L5/1469
    • This invention relates to an automatic detection apparatus for UL/DL configuration in LTE-TDD signal and the method thereby for automatically detecting the UL/DL configuration number of an LTE-TDD signal without a decoder by using a simple structure. An automatic detection apparatus for UL/DL configuration in LTE-TDD signal comprises: a signal receiving unit for receiving an LTE-TDD RF signal and converting the LTE-TDD RF signal into a LTE-TDD baseband signal; a signal extracting unit for extracting a cell-specific reference signal for each subframe length in one frame length of the LTE-TDD baseband signal received from the signal receiving unit; a signal power measurement unit for measuring the power of the corresponding subframe reference signal according to the cell-specific reference signal received from the signal extracting unit; and an UL/DL configuration determination unit for determining whether the corresponding subframe is a DL subframe or an UL subframe according to the comparison result of the power of the corresponding subframe reference signal measured in the signal power measurement unit with a predetermined reference value, and determining the UL/DL configuration number for the corresponding frame based on the subframe number determined as described above. In the above configuration, it is characterized in that the predetermined reference value is the noise power without any LTE-TDD signal.
    • 本发明涉及用于LTE-TDD信号中的UL / DL配置的自动检测装置及其方法,其通过使用简单的结构自动检测没有解码器的LTE-TDD信号的UL / DL配置号。 一种用于LTE-TDD信号中UL / DL配置的自动检测装置,包括:信号接收单元,用于接收LTE-TDD RF信号,并将LTE-TDD RF信号转换为LTE-TDD基带信号; 信号提取单元,用于从从信号接收单元接收的LTE-TDD基带信号的一帧长度中提取每个子帧长度的小区特定参考信号; 信号功率测量单元,用于根据从信号提取单元接收的小区特定参考信号来测量相应的子帧参考信号的功率; 以及UL / DL配置确定单元,用于根据在具有预定参考值的信号功率测量单元中测量的相应子帧参考信号的功率的比较结果来确定相应子帧是否为DL子帧或UL子帧,以及 基于如上所述确定的子帧号来确定相应帧的UL / DL配置编号。 在上述配置中,其特征在于,预定参考值是没有任何LTE-TDD信号的噪声功率。
    • 6. 发明申请
    • CALIBRATION METHOD OF MODULATION POWER FOR DVB-H TEST APPARATUS
    • DVB-H测试装置的调制功率校准方法
    • WO2012036353A1
    • 2012-03-22
    • PCT/KR2011/000078
    • 2011-01-06
    • INNOWIRELESS CO., LTD.JOUNG, JinsoupKIM, JongminYANG, ChangbokKANG, Myunggu
    • JOUNG, JinsoupKIM, JongminYANG, ChangbokKANG, Myunggu
    • G01R35/00G01R29/06G01R29/08
    • G01D18/002H04B17/13
    • This invention relates to a calibration method of modulation power for DVB-H test apparatus for reducing the calibration time for the power loss in the RF cable to half through calibration using the expected power loss of the modulated wave at an arbitrary frequency based on the measured power losses of the continuous wave over frequencies in the RF cable. The calibration method of modulation power for DVB-H test apparatus that is performed by the computer with installed calibration program therein and connected to the power meter of the DVB-H test apparatus, comprises and includes the steps of: commanding DVB-H test apparatus to output continuous waves having frequencies from the start frequency to the stop frequency with increment of frequency step in accordance with the preset power level; storing CW power offset, that is the difference between the actual power level and the preset power level, to the table after receiving actual power level of continuous waves having frequencies from the start frequency to the stop frequency with increment of frequency step from the power meter; commanding DVB-H test apparatus to output a modulated wave that carries data on a continuous wave having an arbitrary frequency between the start frequency and the stop frequency, thereafter receiving actual output power level from the power meter, and calculating the modulation power offset between the continuous wave and the modulated wave at the corresponding arbitrary frequency, thereafter commanding DVB-H test apparatus to output the preset power level added with the power offset of the continuous wave and the power offset of the modulated wave when transmitting the modulated wave.
    • 本发明涉及一种用于DVB-H测试装置的调制功率的校准方法,用于将射频电缆中的功率损耗的校准时间减少到通过校准的一半,所述校准时间使用基于所测量的任意频率的调制波的预期功率损耗 射频电缆中频率连续波的功率损耗。 由其中安装有校准程序的计算机执行并连接到DVB-H测试装置的功率计的DVB-H测试装置的调制功率的校准方法包括以下步骤:指令DVB-H测试装置 根据预设的功率电平以频率步长的增量输出具有从起始频率到停止频率的频率的连续波; 将来自功率计的频率增量的从起始频率到停止频率的连续波的实际功率电平存储在表的实际功率电平和预设功率电平之间的CW功率偏移量, ; 命令DVB-H测试装置输出在起始频率和停止频率之间具有任意频率的连续波上的数据的调制波,然后从功率计接收实际输出功率电平,并计算在 连续波和相应任意频率的调制波,此后命令DVB-H测试装置在传输调制波时输出附加了连续波的功率偏移的预设功率电平和调制波的功率偏移。
    • 9. 发明申请
    • DIGITAL RE-SAMPLING APPARATUS USING FRACTIONAL DELAY GENERATOR
    • 数字再采样器采用分时延迟发生器
    • WO2012050267A1
    • 2012-04-19
    • PCT/KR2010/009582
    • 2010-12-30
    • INNOWIRELESS CO., LTD.JOUNG, JinsoupHA, KyeongminLEE, Joohyeong
    • JOUNG, JinsoupHA, KyeongminLEE, Joohyeong
    • H03H17/02H03H17/00
    • H03H17/0444H03H17/0027H03H17/0642
    • Disclosed herein is a digital re-sampling apparatus. The digital re-sampling apparatus includes a sample buffer, a sample buffer control unit, a filter bank, a first delay bank, a fractional delay constant table, a combiner bank, and a second delay bank. The sample buffer temporarily stores an input sample in synchronization with an input sampling frequency. The sample buffer control unit controls writing and reading operations. The filter bank includes a number of digital filters equal to the number of stages, and filters the input sample. The first delay bank differentially delays a filter output value. The fractional delay constant table stores information about re-sampling time. The combiner bank includes a number of adders and multipliers, performs an operation, and outputs a re-sampled value. The second delay bank causes a delay so that output of each combiner can be synchronized with each output of the fractional delay constant table.
    • 本文公开了一种数字再采样装置。 数字重采样装置包括采样缓冲器,采样缓冲器控制单元,滤波器组,第一延迟组,分数延迟常数表,组合器组和第二延迟组。 采样缓冲器与输入采样频率同步地临时存储输入采样。 采样缓冲器控制单元控制写入和读取操作。 滤波器组包括等于级数的多个数字滤波器,并对输入样本进行滤波。 第一个延迟组差分地延迟滤波器输出值。 分数延迟常数表存储关于重新采样时间的信息。 组合器组包括多个加法器和乘法器,执行操作,并且输出重新采样的值。 第二延迟组引起延迟,使得每个组合器的输出可以与分数延迟常数表的每个输出同步。