公开(公告)号：US20050089087A1

公开(公告)日：2005-04-28

申请号：US10808888

申请日：2004-03-25

申请人： Wen-Ho Sheen ,  Chii-Horng Chen ,  Chien-Huei Lin ,  Hsin-Hsiung Fang

发明人： Wen-Ho Sheen ,  Chii-Horng Chen ,  Chien-Huei Lin ,  Hsin-Hsiung Fang

IPC分类号： H04B1/69 ,  H04B1/707

CPC分类号： H04B1/70755 ,  H04B1/709

摘要： A signal detection method with high detection probability and low false alarm rate is provided for spread spectrum communication systems. The method includes steps of a) receiving discrete-time input signal, b) converting the input signal into a correlator output signal with finite number of values, c) selecting a maximum value and a minimum value from the magnitude of values, respectively, d) dividing the maximum value by the minimum value for obtaining an enhanced peak value of the correlator output signal, and e) comparing the enhanced peak value of the correlator output signal with a predetermined threshold, wherein the input signal is detected as a spread spectrum signal if the enhanced peak value of the correlator output signal is greater than or equal to the predetermined threshold, whereas the input signal is not detected as a spread spectrum signal if the enhanced peak value of the correlator output signal is less than the predetermined threshold. Simulation results show that the proposed method outperforms the conventional method.

摘要翻译： 为扩频通信系统提供了具有高检测概率和低误报率的信号检测方法。 该方法包括以下步骤：a）接收离散时间输入信号，b）将输入信号转换为具有有限数量值的相关器输出信号，c）从值的大小分别选择最大值和最小值d ）将最大值除以用于获得相关器输出信号的增强峰值的最小值，以及e）将相关器输出信号的增强峰值与预定阈值进行比较，其中输入信号被检测为扩频信号 如果相关器输出信号的增强峰值大于或等于预定阈值，而如果相关器输出信号的增强峰值小于预定阈值，则输入信号未被检测为扩频信号。 仿真结果表明，该方法优于常规方法。

公开(公告)号：US20050123070A1

公开(公告)日：2005-06-09

申请号：US11000166

申请日：2004-11-29

申请人： Wen-Ho Sheen ,  Chii-Horng Chen ,  Chien-Huci Lin ,  Hsin-Hsiung Fang

发明人： Wen-Ho Sheen ,  Chii-Horng Chen ,  Chien-Huci Lin ,  Hsin-Hsiung Fang

IPC分类号： H03K9/00 ,  H04B1/00 ,  H04L7/02 ,  H04L27/22

CPC分类号： H04L7/0054 ,  H04L27/22

摘要： In the invention, a simple and robust method for clock offset compensation is proposed using an equalizer with time-varying signal windowing for which the timing information needed is obtained by an existing non-data-aided (NDA) timing estimator. Instead of interpolating the received signal, the proposed method compensates clock offset by using a moving signal window for equalizer. Since no interpolation is needed, the timing information required for the proposed method need not be so accurate as required for interpolation methods. Rather than the exact time drift due to clock offset, the proposed method requires only the timing points where the time drift accumulates to a pre-defined threshold. By applying an existing non-data-aided (NDA) timing estimator, the needed timing information can be obtained easily. Moreover, thanks to robustness of the NDA timing estimator, the proposed method is inherently robust and simple in implementation.

摘要翻译： 在本发明中，提出了一种用于时钟偏移补偿的简单且鲁棒的方法，其使用具有随时间变化的信号窗口化的均衡器，由现有的非数据辅助（NDA）定时估计器获得所需的定时信息。 所提出的方法代替内插接收到的信号，通过使用用于均衡器的移动信号窗口来补偿时钟偏移。 由于不需要插值，因此所提出的方法所需的定时信息不需要如插值方法所要求的精确。 而不是由于时钟偏移引起的精确时间漂移，所提出的方法仅需要时间漂移累积到预定阈值的定时点。 通过应用现有的非数据辅助（NDA）定时估计器，可以容易地获得所需的定时信息。 此外，由于NDA定时估计器的鲁棒性，所提出的方法本质上是稳健且实现简单的。

公开(公告)号：US07756482B2

公开(公告)日：2010-07-13

申请号：US11614982

申请日：2006-12-22

申请人： Shiang-Jiun Lin ,  I-Kang Fu ,  Cheng-Kang Pai ,  Wen-Ho Sheen

发明人： Shiang-Jiun Lin ,  I-Kang Fu ,  Cheng-Kang Pai ,  Wen-Ho Sheen

IPC分类号： H04B17/00

CPC分类号： H04B7/2606

摘要： A scheduling technique for wireless multihop relay communication systems is provided. With spatial separation caused by the shadowing effect of surrounding buildings, a base station and its relay stations in a single cell are divided into several groups by following the rule that stations with severe potential interference are separated into different groups. The base station arranges the scheduling of these groups and serves these groups sequentially in the time domain. To take advantage of shadow effect, the same radio resources can be scheduled for relay stations within the same group due to the isolation of interfering signals. In the present invention, base stations and relay stations are equipped with directional antennas or sector antennas to further exploit the advantage of spatial separations. Different relay groups can also reuse the radio resource through appropriate power control. The cell capacity can be enhanced substantially because of aggressive radio resource reuse.

摘要翻译： 提供了一种用于无线多跳中继通信系统的调度技术。 由于周围建筑物的阴影效应引起的空间分离，单个小区的基站及其中继站按照将严重潜在干扰站分为不同组的规则划分为若干组。 基站安排这些组的调度，并且在时域中依次提供这些组。 为了利用阴影效应，由于干扰信号的隔离，可以为同一组内的中继站调度相同的无线电资源。 在本发明中，基站和中继站配备有定向天线或扇区天线，以进一步利用空间分离的优点。 不同的中继组也可以通过适当的功率控制来重用无线电资源。 由于积极的无线电资源重用，电池容量可以大大提高。

公开(公告)号：US20080108305A1

公开(公告)日：2008-05-08

申请号：US11614982

申请日：2006-12-22

申请人： Shiang-Jiun Lin ,  I-Kang Fu ,  Cheng-Kang Pai ,  Wen-Ho Sheen

发明人： Shiang-Jiun Lin ,  I-Kang Fu ,  Cheng-Kang Pai ,  Wen-Ho Sheen

IPC分类号： H04B7/15

CPC分类号： H04B7/2606

摘要： A scheduling technique for wireless multihop relay communication systems is provided. With spatial separation caused by the shadowing effect of surrounding buildings, a base station and its relay stations in a single cell are divided into several groups by following the rule that stations with severe potential interference are separated into different groups. The base station arranges the scheduling of these groups and serves these groups sequentially in the time domain. To take advantage of shadow effect, the same radio resources can be scheduled for relay stations within the same group due to the isolation of interfering signals. In the present invention, base stations and relay stations are equipped with directional antennas or sector antennas to further exploit the advantage of spatial separations. Different relay groups can also reuse the radio resource through appropriate power control. The cell capacity can be enhanced substantially because of aggressive radio resource reuse.

摘要翻译： 提供了一种用于无线多跳中继通信系统的调度技术。 由于周围建筑物的阴影效应引起的空间分离，单个小区的基站及其中继站按照将严重潜在干扰站分为不同组的规则划分为若干组。 基站安排这些组的调度，并且在时域中依次提供这些组。 为了利用阴影效应，由于干扰信号的隔离，可以为同一组内的中继站调度相同的无线电资源。 在本发明中，基站和中继站配备有定向天线或扇区天线，以进一步利用空间分离的优点。 不同的中继组也可以通过适当的功率控制来重用无线电资源。 由于积极的无线电资源重用，电池容量可以大大提高。

公开(公告)号：US08203994B2

公开(公告)日：2012-06-19

申请号：US11864705

申请日：2007-09-28

申请人： Wen-Ho Sheen ,  Fang-Ching Ren ,  Tzu-Ming Lin ,  Chie-Ming Chou

发明人： Wen-Ho Sheen ,  Fang-Ching Ren ,  Tzu-Ming Lin ,  Chie-Ming Chou

IPC分类号： H04W4/00

CPC分类号： H04W16/26 ,  H04B7/15592 ,  H04B7/2606 ,  H04W72/04 ,  H04W84/047

摘要： A method of providing wireless communication is disclosed. The method may include providing a number of stations configured for transmitting signals wirelessly over at least one channel and dividing the stations into at least two clusters. The stations within each cluster may operate cooperatively to transmit or receive signals corresponding to the cluster simultaneously.

摘要翻译： 公开了提供无线通信的方法。 该方法可以包括提供多个站，所述站被配置用于通过至少一个信道无线地发送信号，并将站分成至少两个群集。 每个集群内的站点可以协同工作，同时发送或接收与集群对应的信号。

公开(公告)号：US07965985B2

公开(公告)日：2011-06-21

申请号：US11864739

申请日：2007-09-28

申请人： Wen-Ho Sheen ,  Fang-Ching Ren ,  Tzu-Ming Lin ,  Chie-Ming Chou

发明人： Wen-Ho Sheen ,  Fang-Ching Ren ,  Tzu-Ming Lin ,  Chie-Ming Chou

IPC分类号： H04B1/00

CPC分类号： H04W40/32

摘要： A wireless communication device is disclosed. The wireless communication device may include a first station and a second station. The first station is coupled with the second station. The first and second stations are within a first cluster. The stations within the first cluster are configured to operate cooperatively to transmit or receive signals corresponding to the cluster over at least one channel. One of the stations transmits only data signals without transmitting a preamble or a MAP message.

摘要翻译： 公开了一种无线通信设备。 无线通信设备可以包括第一站和第二站。 第一站与第二站相连。 第一和第二站位于第一群集内。 第一集群内的站被配置为协作地操作以在至少一个信道上发送或接收与集群相对应的信号。 其中一个站仅发送数据信号而不发送前导码或MAP消息。

公开(公告)号：US20080085677A1

公开(公告)日：2008-04-10

申请号：US11864739

申请日：2007-09-28

申请人： Wen-Ho Sheen ,  Fang-Ching Ren ,  Tzu-Ming Lin ,  Chie-Ming Chou

发明人： Wen-Ho Sheen ,  Fang-Ching Ren ,  Tzu-Ming Lin ,  Chie-Ming Chou

IPC分类号： H04B7/14

CPC分类号： H04W40/32

摘要： A wireless communication device is disclosed. The wireless communication device may include a first station and a second station. The first station is coupled with the second station. The first and second stations are within a first cluster. The stations within the first cluster are configured to operate cooperatively to transmit or receive signals corresponding to the cluster over at least one channel. One of the stations transmits only data signals without transmitting a preamble or a MAP message

摘要翻译： 公开了一种无线通信设备。 无线通信设备可以包括第一站和第二站。 第一站与第二站相连。 第一和第二站位于第一群集内。 第一集群内的站被配置为协作地操作以在至少一个信道上发送或接收与集群相对应的信号。 其中一个站仅发送数据信号而不发送前导码或MAP消息