公开(公告)号：US20080310525A1

公开(公告)日：2008-12-18

申请号：US11812046

申请日：2007-06-14

Applicant: Huei-Jin Lin ,  Wei Ping Chuang ,  Jiun-Yo Lai ,  Pang-An Ting

Inventor： Huei-Jin Lin ,  Wei Ping Chuang ,  Jiun-Yo Lai ,  Pang-An Ting

IPC: H04L27/28

CPC classification number: H04L27/2655 ,  H04J11/0069 ,  H04L27/2666

Abstract: An apparatus and method for cell acquisition and downlink synchronization acquisition in an OFDMA wireless communication system are provided. In an SS apparatus in a broadband wireless communication system, a preamble subcarrier acquirer extracts subcarrier values having a preamble code from an FFT signal. A multiplier code-demodulates the subcarrier values by multiplying the subcarrier values by a preamble code. A correlator calculates a plurality of differential correlations in the code-demodulated signal. An IFFT processor IFFT-processes the differential correlations by mapping the differential correlations to subcarriers. A maximum value detector detects a maximum value from the IFFT signal and calculates a timing offset using an IFFT output index having the maximum value.

Abstract translation: 提供了一种在OFDMA无线通信系统中用于小区获取和下行链路同步捕获的装置和方法。 在宽带无线通信系统的SS装置中，前导子载波采集器从FFT信号中提取具有前导码的子载波值。 乘法器通过将子载波值乘以前导码来解码副载波值。 相关器在码解调信号中计算多个差分相关。 IFFT处理器IFFT通过将差分相关映射到子载波来处理差分相关。 最大值检测器从IFFT信号检测最大值，并使用具有最大值的IFFT输出索引来计算定时偏移。

公开(公告)号：US06890008B1

公开(公告)日：2005-05-10

申请号：US10364395

申请日：2003-02-12

Applicant: Wei-Ping Chuang ,  Wu-Yung Chen

Inventor： Wei-Ping Chuang ,  Wu-Yung Chen

IPC: E05C3/14 ,  G06F1/16 ,  E05C19/10

CPC classification number: G06F1/1616 ,  E05C3/14 ,  G06F1/1679 ,  Y10S292/37 ,  Y10T292/0849 ,  Y10T292/0926 ,  Y10T292/0928 ,  Y10T292/093 ,  Y10T292/1052

Abstract: An interlocking device for locking a case includes first and second interlocking members. The first interlocking member is formed with a notch. The second interlocking member is formed with a button that is operable to rotate the second interlocking member from a first position, in which the first and second interlocking members engage each other and in which the button is received in the notch, to a second position, in which the first and second interlocking members disengage from each other and in which the button moves out of the notch.

Abstract translation: 用于锁定壳体的互锁装置包括第一和第二互锁构件。 第一互锁构件形成有凹口。 第二互锁构件形成有按钮，该按钮可操作以从第一位置旋转第二联锁构件，第一联锁构件和第二联锁构件将第一和第二联锁构件彼此接合并且其中按钮被容纳在凹口中，第二位置， 其中第一和第二互锁构件彼此脱离并且其中按钮移出凹口。