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    • 1. 发明授权
    • Method and apparatus for determining data transmit diversity mode of base station
    • 用于确定基站的数据发射分集模式的方法和装置
    • US07054639B2
    • 2006-05-30
    • US10721224
    • 2003-11-26
    • Che-Li LinSheng-Jie Chen
    • Che-Li LinSheng-Jie Chen
    • H04Q7/20
    • H04B7/063H04B7/0634H04B7/0656
    • The present invention provides a method and apparatus for determining the data transmit diversity mode of a base station. The present invention first estimates a first feedback weight of the mobile unit during a first slot. The first feedback weight has a first phase. Then, the present invention estimates a second feedback weight of the mobile unit during a second slot. The feedback weight has a second phase. A phase difference is obtained by comparing the first phase with the second phase. The present invention determines the applicability of closed loop transmit diversity mode according to the phase difference. Besides, if the feedback error rate is too high, the present invention commands the base station to tune off the closed loop transmit diversity for better performance.
    • 本发明提供了一种用于确定基站的数据发射分集模式的方法和装置。 本发明首先估计在第一时隙期间移动单元的第一反馈权重。 第一反馈重量具有第一阶段。 然后,本发明在第二时隙期间估计移动单元的第二反馈权重。 反馈权重具有第二阶段。 通过比较第一相和第二相获得相位差。 本发明根据相位差确定闭环发射分集模式的适用性。 此外,如果反馈误差率太高,则本发明命令基站调整闭环发送分集以获得更好的性能。
    • 2. 发明授权
    • System and method to adjust searcher threshold parameter of rake receiver
    • 调整rake接收机的搜索器阈值参数的系统和方法
    • US07283578B2
    • 2007-10-16
    • US10377453
    • 2003-02-28
    • Che-Li LinSheng-Jie Chen
    • Che-Li LinSheng-Jie Chen
    • H04B1/69H04B1/707H04B1/713
    • H04B1/70755H04B1/7113H04B1/7115H04B1/7117H04B1/712
    • 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.
    • 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。
    • 3. 发明授权
    • Method for WCDMA frame synchronization and related device
    • WCDMA帧同步方法及相关设备
    • US07254163B2
    • 2007-08-07
    • US10707663
    • 2003-12-31
    • Sheng-Jie ChenChe-Li Lin
    • Sheng-Jie ChenChe-Li Lin
    • H04B1/00H04J3/06
    • H04B1/70775H04B1/70735H04B1/7083H04B1/709
    • 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.
    • 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。
    • 4. 发明申请
    • METHOD FOR WCDMA FRAME SYNCHRONIZATION AND RELATED DEVICE
    • 用于WCDMA帧同步和相关设备的方法
    • US20050147157A1
    • 2005-07-07
    • US10707663
    • 2003-12-31
    • Sheng-Jie ChenChe-Li Lin
    • Sheng-Jie ChenChe-Li Lin
    • H04B1/707H04B1/69
    • H04B1/70775H04B1/70735H04B1/7083H04B1/709
    • 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.
    • 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。
    • 6. 发明授权
    • Automatic gain control method for receiver and apparatus thereof
    • 接收机的自动增益控制方法及其装置
    • US07787848B2
    • 2010-08-31
    • US11858111
    • 2007-09-19
    • Che-Li LinHua-Shan ChouTsung-Han Wu
    • Che-Li LinHua-Shan ChouTsung-Han Wu
    • H04B1/06
    • H04N5/52H03G3/3068H04N5/4401H04N21/4263
    • A gain control method which includes setting a first initial gain value to a first variable gain amplifier; measuring a first power value corresponding to incoming signals; measuring a second power value corresponding to a target signal; and resetting the first initial gain value according to the first power value and the second power value. Another gain control method is also disclosed, which includes updating a gain value of a first variable gain amplifier by combining an adjustment value with the gain value according to a first tuning direction; obtaining a signal quality indicator; comparing the signal quality indicator with a reference signal quality indicator to generate a comparison result; and referring to the comparison result, further updating the gain value according to the first tuning direction or a second tuning direction opposite to the first tuning direction.
    • 一种增益控制方法,包括:将第一初始增益值设置为第一可变增益放大器; 测量对应于输入信号的第一功率值; 测量对应于目标信号的第二功率值; 以及根据所述第一功率值和所述第二功率值来重置所述第一初始增益值。 还公开了另一种增益控制方法,其包括通过根据第一调谐方向组合调整值与增益值来更新第一可变增益放大器的增益值; 获得信号质量指标; 将信号质量指示符与参考信号质量指标进行比较以产生比较结果; 参照比较结果,根据与第一调谐方向相反的第一调谐方向或第二调谐方向进一步更新增益值。
    • 7. 发明申请
    • DATA SYNCHRONIZATION METHOD AND RELATED APPARATUS FOR A DISPLAY DEVICE
    • 用于显示设备的数据同步方法和相关设备
    • US20090279649A1
    • 2009-11-12
    • US12208354
    • 2008-09-11
    • Wen-Yuan TsaoChe-Li LinChi-Ming Yuan
    • Wen-Yuan TsaoChe-Li LinChi-Ming Yuan
    • H04L7/00
    • H04L7/10G09G5/008H04L7/0008H04L7/06
    • A data synchronization method for a transmitter of a display device includes utilizing a plurality of first signaling line sets to couple the transmitter and a plurality of receivers in a dedicated type manner, transmitting a synchronization signal to the plurality of receivers according to a transistor-to-transistor logic signal form, transmitting a synchronization start-up signal to the plurality of receivers via the plurality of first signaling line sets a first time later after the synchronization signal is transmitted, and then transmitting a data signal to the plurality of receivers via the plurality of first signaling line sets a second time later after the synchronization start-up signal is transmitted. The synchronization signal has a longer effective time than the synchronization start-up signal.
    • 一种用于显示设备的发射机的数据同步方法包括利用多个第一信令线路集合以专用类型方式耦合发射机和多个接收机,根据晶体管与基站发送同步信号给多个接收机 晶体管逻辑信号形式,在发送同步信号之后的第一次之后经由多个第一信令线集合向多个接收器发送同步启动信号,然后经由该多个接收器发送数据信号 多个第一信令线在发送同步启动信号之后第二次设置。 同步信号具有比同步启动信号更长的有效时间。
    • 9. 发明申请
    • DVB-H RECEIVER FOR FORWARD ERROR CORRECTION AND METHOD THEREOF
    • DVB-H接收机用于前向纠错及其方法
    • US20080126915A1
    • 2008-05-29
    • US11562993
    • 2006-11-23
    • Chih-Peng ChangChe-Li Lin
    • Chih-Peng ChangChe-Li Lin
    • H03M13/00
    • H04L1/0045
    • A DVB-H receiver for performing forward error correction is disclosed. The DVB-H receiver includes: a tuner, for receiving a data stream; a base-band receiver, coupled to the tuner, for continuously extracting and transmitting data bytes of an MPE-FEC frame from the data stream; a backend system, coupled to the base-band receiver, for generating corresponding syndromes of the extracted data bytes once all data bytes of the MPE-FEC frame are received, outputting the syndromes to the base-band receiver, and forward error correcting the MPE-FEC frame according to error values corresponding to the syndromes; and a storage device, coupled to the backend system, for storing the extracted data bytes. The base-band receiver generates the error values and error locations according to the received syndromes, and then outputs the error values and error locations to the backend system.
    • 公开了一种用于执行前向纠错的DVB-H接收机。 DVB-H接收机包括:用于接收数据流的调谐器; 耦合到所述调谐器的基带接收器,用于从所述数据流连续提取和发送MPE-FEC帧的数据字节; 后端系统耦合到基带接收机,用于在接收到MPE-FEC帧的所有数据字节之后产生所提取的数据字节的相应校正子,将校验子输出到基带接收机,以及前向纠错MPE -FEC帧根据对应于综合征的误差值; 以及耦合到后端系统的用于存储所提取的数据字节的存储设备。 基带接收机根据接收到的校正子生成错误值和错误位置,然后将错误值和错误位置输出到后端系统。