-
1.发明授权System and method to adjust searcher threshold parameter of rake receiver 失效调整rake接收机的搜索器阈值参数的系统和方法公开(公告)号：US07283578B2
公开(公告)日：2007-10-16
申请号：US10377453
申请日：2003-02-28
申请人： Che-Li Lin , Sheng-Jie Chen
发明人： Che-Li Lin , Sheng-Jie Chen
CPC分类号： H04B1/70755 , H04B1/7113 , H04B1/7115 , H04B1/7117 , H04B1/712
摘要： This present invention is a system and method to adjust a searcher threshold parameter of a RAKE receiver. The adjusting system includes a searcher, a power estimator, and a parameter control apparatus. When the searcher finds and acquires a new path signal, the power estimator will estimate the power of the new path signal and that of the other path signals. The parameter control apparatus will calculate and monitor the power ratio corresponding to the new path signal. If the power ratio remains smaller than a predetermined power ratio parameter for a first predetermined times, the parameter control apparatus will increase the value of the threshold parameter. If the power ratio remains unchanged for a second predetermined times, the parameter control apparatus will lower the value of the threshold parameter. After that, the searcher will acquire the path signals among the multipath signal being searched in accordance with the adjusted threshold parameter. With this adjusted threshold parameter, the present invention can improve the sensitivity of the searcher, acquire the correct path signals in various environments, and provide the correct position of the path signal to the RAKE receiver.
摘要翻译： 本发明是一种调整RAKE接收机的搜索者阈值参数的系统和方法。 调整系统包括搜索器，功率估计器和参数控制装置。 当搜索者发现并获取新的路径信号时，功率估计器将估计新路径信号的功率和其他路径信号的功率。 参数控制装置将计算并监视与新路径信号对应的功率比。 如果第一预定次数的功率比保持小于预定功率比参数，则参数控制装置将增加阈值参数的值。 如果功率比在第二预定时间内保持不变，则参数控制装置将降低阈值参数的值。 之后，搜索器将根据调整后的阈值参数获得被搜索的多径信号之间的路径信号。 利用该调整后的阈值参数，本发明可以提高搜索者的灵敏度，在各种环境中获取正确的路径信号，并将路径信号的正确位置提供给RAKE接收机。
-
公开(公告)号：US07254163B2
公开(公告)日：2007-08-07
申请号：US10707663
申请日：2003-12-31
申请人： Sheng-Jie Chen , Che-Li Lin
发明人： Sheng-Jie Chen , Che-Li Lin
CPC分类号： H04B1/70775 , H04B1/70735 , H04B1/7083 , H04B1/709
摘要： A method for performing frame synchronization in a WCDMA system includes first, correlating a received signal with a plurality of predetermined correlators to obtain a plurality of frame synchronization correlation results, then, coherently combining frame synchronization correlation results with a slot synchronization phase when a test phase difference is less than a threshold phase difference, or, coherently combining frame synchronization correlation results with a linear combination of slot synchronization phases when the test phase difference is greater than or equal to the threshold phase difference. The slot synchronization phase is determined by correlating the received signal with a slot synchronization sequence. Lastly, the method determines a frame boundary of the received signal based on the coherent combination results. The method accommodates for a changing signal to noise ratio to improve frame synchronization speed and accuracy.
摘要翻译： 一种用于在WCDMA系统中执行帧同步的方法包括首先将接收信号与多个预定相关器相关联以获得多个帧同步相关结果，然后在测试阶段相干地将帧同步相关结果与时隙同步相结合 差值小于阈值相位差，或者当测试相位差大于或等于阈值相位差时，将帧同步相关结果与时隙同步相位的线性组合相干组合。 通过将接收的信号与时隙同步序列相关联来确定时隙同步相位。 最后，该方法基于相干组合结果确定接收信号的帧边界。 该方法适应变化的信噪比，从而提高帧同步速度和精度。
-
公开(公告)号：US20050147157A1
公开(公告)日：2005-07-07
申请号：US10707663
申请日：2003-12-31
申请人： Sheng-Jie Chen , Che-Li Lin
发明人： Sheng-Jie Chen , Che-Li Lin
CPC分类号： H04B1/70775 , H04B1/70735 , H04B1/7083 , H04B1/709
摘要： A method for performing frame synchronization in a WCDMA system includes first, correlating a received signal with a plurality of predetermined correlators to obtain a plurality of frame synchronization correlation results, then, coherently combining frame synchronization correlation results with a slot synchronization phase when a test phase difference is less than a threshold phase difference, or, coherently combining frame synchronization correlation results with a linear combination of slot synchronization phases when the test phase difference is greater than or equal to the threshold phase difference. The slot synchronization phase is determined by correlating the received signal with a slot synchronization sequence. Lastly, the method determines a frame boundary of the received signal based on the coherent combination results. The method accommodates for a changing signal to noise ratio to improve frame synchronization speed and accuracy.
摘要翻译： 一种用于在WCDMA系统中执行帧同步的方法包括首先将接收信号与多个预定相关器相关联以获得多个帧同步相关结果，然后在测试阶段相干地将帧同步相关结果与时隙同步相结合 差值小于阈值相位差，或者当测试相位差大于或等于阈值相位差时，将帧同步相关结果与时隙同步相位的线性组合相干组合。 通过将接收的信号与时隙同步序列相关联来确定时隙同步相位。 最后，该方法基于相干组合结果确定接收信号的帧边界。 该方法适应变化的信噪比，从而提高帧同步速度和精度。
-
公开(公告)号：US20050259770A1
公开(公告)日：2005-11-24
申请号：US10850275
申请日：2004-05-20
申请人： Sheng-Jie Chen
发明人： Sheng-Jie Chen
CPC分类号： H04L25/03292 , H04L25/0212 , H04L25/03318
摘要： A method and system thereof for determining feedback for iterative channel estimation based on the summation of soft output decisions or Bit Error Rate (BER) derived from the output of an equalizer. The channel impulse response initially obtained according to a training sequence is used to estimate the received signal, and output hard values. The BER of the training sequence is calculated and judged, and if the BER is too high, the channel is estimated again according to the feedback until the BER satisfies a predetermined value. If the BER is still unsatisfactory after a predetermined number of trials, the channel is assumed to be an authentic bad channel, thus terminating the feedback procedure. If the equalizer is capable of outputting soft output decision, the summation of soft outputs is used instead of BER to determine whether feedback is appropriate.
摘要翻译： 一种用于基于从均衡器的输出导出的软输出判定或误码率（BER）的求和来确定用于迭代信道估计的反馈的方法和系统。 最初根据训练序列获得的信道脉冲响应用于估计接收信号，并输出硬值。 计算并判断训练序列的BER，如果BER太高，则根据反馈再次估计信道，直到BER满足预定值。 如果在预定次数的试验之后BER仍然不令人满意，则该信道被认为是真实的坏信道，从而终止反馈过程。 如果均衡器能够输出软输出决定，则使用软输出的总和而不是BER来确定反馈是否合适。
-
5.发明授权公开(公告)号：US07626652B2
公开(公告)日：2009-12-01
申请号：US11314858
申请日：2005-12-20
申请人： Kuo-Chih Lee , Yi-Chun Lin , Sheng-Jie Chen , Huang-De Lin
发明人： Kuo-Chih Lee , Yi-Chun Lin , Sheng-Jie Chen , Huang-De Lin
IPC分类号： G02F1/1335 , G02F1/1333 , F21V7/04
CPC分类号： H01M2/1077 , H01M10/0525 , H01M10/0565 , H01M10/613 , H01M10/625 , H01M10/647 , H01M10/6563 , H01M10/6566
摘要： A backlight module and a liquid crystal display (LCD) device incorporating the same are provided. The backlight module includes a frame and at least a light source. The frame has at least a through aperture. The light source having at least a t high voltage electrode terminal is disposed above the frame. The high voltage electrode terminal is positioned above the through aperture.
摘要翻译： 提供了一种背光模块和包括其的液晶显示器（LCD）装置。 背光模块包括框架和至少一个光源。 该框架至少具有通孔。 具有至少t个高压电极端子的光源设置在框架上方。 高压电极端子位于通孔的上方。
-
6.发明申请IMAGE SURVEILLANCE SYSTEM, IMAGE CAPTURING APPARATUS AND MULTIMEDIA APPARATUS 审中-公开图像监视系统，图像捕获设备和多媒体设备公开(公告)号：US20120307055A1
公开(公告)日：2012-12-06
申请号：US13485944
申请日：2012-06-01
申请人： Chen-Liang Li , Sheng-Jie Chen , Chia-Hung Lin
发明人： Chen-Liang Li , Sheng-Jie Chen , Chia-Hung Lin
IPC分类号： H04N7/18
摘要： An image surveillance system, an image capturing apparatus, and a multimedia apparatus are provided. The image surveillance system includes an image capturing module, a first digital modulating module, a second digital modulating module, and a multimedia module. The image capturing module produces an image signal. The first digital modulating module includes a first digital modulator and a first analog-to-digital/digital-to-analog (AD/DA) converter to receive the image signal and modulate the same into a digital stream. The second digital modulating module includes a second digital modulator and a second AD/DA converter and is connected to the first AD/DA converter through a coaxial cable. The second digital modulator receives the digital stream and modulates the digital stream into image data. The multimedia module is electrically connected to the second digital modulating module and receives the image data.
摘要翻译： 提供了图像监视系统，图像捕获设备和多媒体设备。 图像监视系统包括图像捕获模块，第一数字调制模块，第二数字调制模块和多媒体模块。 图像捕获模块产生图像信号。 第一数字调制模块包括第一数字调制器和第一模数/数/模（AD / DA）转换器，用于接收图像信号并将其调制成数字流。 第二数字调制模块包括第二数字调制器和第二AD / DA转换器，并通过同轴电缆连接到第一AD / DA转换器。 第二数字调制器接收数字流并将数字流调制成图像数据。 多媒体模块电连接到第二数字调制模块并接收图像数据。
-
公开(公告)号：US20070189041A1
公开(公告)日：2007-08-16
申请号：US11427399
申请日：2006-06-29
申请人： Sheng-Jie Chen , Chih-Kang Wu
发明人： Sheng-Jie Chen , Chih-Kang Wu
IPC分类号： F21V7/04
CPC分类号： G02F1/133604 , G02F2001/133612 , H05K3/32 , H05K2201/10113 , H05K2201/10333
摘要： An illuminant structure, adapted to a liquid crystal display, is provided. The illuminant structure includes a printed circuit board (PCB) having a conducting line and a connector. The connector is mounted on the back side of the PCB and electrically connected to the conducting line. A socket is mounted on the top side of PCB and electrically connected to the conducting line. A lamp having an external electrode is bracketed by and electrically connected to the socket.
摘要翻译： 提供一种适用于液晶显示器的发光体结构。 光源结构包括具有导线和连接器的印刷电路板（PCB）。 连接器安装在PCB的背面并电连接到导线。 插座安装在PCB的顶侧，并电连接到导线。 具有外部电极的灯由插座包围并电连接。
-
公开(公告)号：US20060062336A1
公开(公告)日：2006-03-23
申请号：US11179915
申请日：2005-07-12
申请人： Zing-Wei Kang , Sheng-Jie Chen
发明人： Zing-Wei Kang , Sheng-Jie Chen
CPC分类号： H04L25/0212 , H04L25/0236
摘要： A method for channel estimation is provided. Firstly is to estimate channel impulse response (CIR) of training sequence. Next is to generate a soft data by means of an equalizer according to the CIR of the training sequence. Subsequently is to estimate CIRs of data sequences according to the interposed training sequence by correlation channel estimation. Next is to define a weight by means of auto-correlation of the estimated data sequence and then to cancel the interference of channel by the weight. Finally is to use the soft data and the non-interference CIR to find out the data stored in the data sequence.
摘要翻译： 提供了一种用于信道估计的方法。 首先是估计训练序列的信道脉冲响应（CIR）。 接下来是根据训练序列的CIR通过均衡器生成软数据。 随后是通过相关信道估计来根据插入的训练序列来估计数据序列的CIR。 接下来是通过估计数据序列的自相关来定义权重，然后通过权重消除信道的干扰。 最后是使用软数据和非干扰CIR来找出存储在数据序列中的数据。
-
公开(公告)号：US20050259766A1
公开(公告)日：2005-11-24
申请号：US10851529
申请日：2004-05-21
申请人： Sheng-Jie Chen
发明人： Sheng-Jie Chen
CPC分类号： H04L25/03197 , H03M13/3961 , H03M13/41 , H03M13/6331 , H03M13/6337 , H04L25/03292
摘要： A path metric computation method and apparatus for estimating a maximum likelihood sequence in a wireless communication network. The proposed method applies the statistical properties of estimated channel impulse response to reduce the computational load. A threshold is set to check the significance of each autocorrelation value in order to determine the contribution to the path metric increment. The corresponding terms in the path metric equation with insignificant autocorrelation values are thus discarded to reduce the complexity of path metric computation.
摘要翻译： 一种用于估计无线通信网络中的最大似然序列的路径度量计算方法和装置。 所提出的方法应用估计的信道脉冲响应的统计特性来减少计算量。 设置阈值以检查每个自相关值的重要性，以便确定对路径度量增量的贡献。 因此丢弃具有无意义的自相关值的路径度量方程中的相应项，以降低路径度量计算的复杂度。
-
公开(公告)号：US07502412B2
公开(公告)日：2009-03-10
申请号：US10850275
申请日：2004-05-20
申请人： Sheng-Jie Chen
发明人： Sheng-Jie Chen
CPC分类号： H04L25/03292 , H04L25/0212 , H04L25/03318
摘要： A method and system thereof for determining feedback for iterative channel estimation based on the summation of soft output decisions or Bit Error Rate (BER) derived from the output of an equalizer. The channel impulse response initially obtained according to a training sequence is used to estimate the received signal, and output hard values. The BER of the training sequence is calculated and judged, and if the BER is too high, the channel is estimated again according to the feedback until the BER satisfies a predetermined value. If the BER is still unsatisfactory after a predetermined number of trials, the channel is assumed to be an authentic bad channel, thus terminating the feedback procedure. If the equalizer is capable of outputting soft output decision, the summation of soft outputs is used instead of BER to determine whether feedback is appropriate.
摘要翻译： 一种用于基于从均衡器的输出导出的软输出判定或误码率（BER）的求和来确定用于迭代信道估计的反馈的方法和系统。 最初根据训练序列获得的信道脉冲响应用于估计接收信号，并输出硬值。 计算并判断训练序列的BER，如果BER太高，则根据反馈再次估计信道，直到BER满足预定值。 如果在预定次数的试验之后BER仍然不令人满意，则该信道被认为是真实的坏信道，从而终止反馈过程。 如果均衡器能够输出软输出决定，则使用软输出的总和而不是BER来确定反馈是否合适。
-
-
-
-
-
-
-
-
-
搜索结果
14 条记录 (耗时 0.015 秒)
