公开(公告)号：US06879576B1

公开(公告)日：2005-04-12

申请号：US09655609

申请日：2000-09-06

申请人： Avneesh Agrawal ,  Daisuke Terasawa

发明人： Avneesh Agrawal ,  Daisuke Terasawa

IPC分类号： H04J13/20 ,  H04B1/7117 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04Q7/38 ,  H04B7/216

CPC分类号： H04J13/0044 ,  H04B7/2628 ,  H04B2201/70705 ,  H04B2201/709709

摘要： Techniques for recovering data transmitted on a physical channel in which the channelization code is not known at the time of the data recovery. A modulated signal is received an processed to provide received samples. A hypothesized channelization code (e.g., an OVSF code in the W-CDMA system) is selected and used to process the received samples to generate partially processed symbols. The hypothesized channelization code is a “base” code that can be used to generate all possible channelization codes that may have been used for the physical channel. Intermediate results representative of the partially processed symbols are stored and, upon determination of the actual channelization code, further processed in accordance with the actual and hypothesized channelization codes to provide the final results.

摘要翻译： 用于恢复在数据恢复时信道化码不知道的物理信道上发送的数据的技术。 接收经处理的调制信号以提供接收的采样。 选择假设的信道化码（例如，W-CDMA系统中的OVSF码）并用于处理接收到的采样以产生部分处理的符号。 假设的信道化码是可以用于生成可能已经用于物理信道的所有可能的信道化码的“基”码。 代表部分处理的符号的中间结果被存储，并且在确定实际信道化码后，根据实际和假设的信道化码进一步处理以提供最终结果。

公开(公告)号：US06393010B1

公开(公告)日：2002-05-21

申请号：US09136699

申请日：1998-08-19

申请人： Stein A. Lunby ,  Edward G. Tiedemann, Jr. ,  Jack M. Holtzman ,  Daisuke Terasawa

发明人： Stein A. Lunby ,  Edward G. Tiedemann, Jr. ,  Jack M. Holtzman ,  Daisuke Terasawa

IPC分类号： H04B7216

CPC分类号： H04B1/707 ,  H04B1/7097 ,  H04B2201/70701 ,  H04B2201/70706 ,  H04B2201/70709 ,  H04W52/30

摘要： A method for limiting the peak transmit power in a CDMA communication system including the steps transmitting a first communication signal having a first high transmit power region and transmitting a second communication signal having a second high transmit power region. One of the first and second communication signals is time offset to prevent the first and second high transmit power regions from occurring simultaneously. Time shifting only a portion of one of the first and second communications signals is also taught. The first and second communication signals can also include respective first and second low transmit power regions. The time offset can be selected to align one of the first and second high transmit power regions with one of the first and second low transmit power regions. The total transmit power signal can be determined and the time offset can be selected according to the total transmit power signal to minimize a peak level of the total transmit power signal. Determining the total transmit power signal for a plurality of differing time offsets and selecting one of the time offsets according to the total transmit power signal is also taught. A fixed time offset or a randomly selected offset between the communication signals can be provided.

摘要翻译： 一种用于限制CDMA通信系统中的峰值发射功率的方法，包括发送具有第一高发射功率区域的第一通信信号和发射具有第二高发射功率区域的第二通信信号的步骤。 第一和第二通信信号之一是时间偏移，以防止第一和第二高发射功率区域同时发生。 还教导了仅移动第一和第二通信信号之一的一部分的时移。 第一和第二通信信号还可以包括相应的第一和第二低发射功率区域。 可以选择时间偏移以使第一和第二高发射功率区域中的一个与第一和第二低发射功率区域中的一个对准。 可以确定总发射功率信号，并且可以根据总发射功率信号选择时间偏移，以使总发射功率信号的峰值电平最小化。 还教导了确定多个不同时间偏移量的总发射功率信号，并根据总发射功率信号选择一个时间偏移量。 可以提供通信信号之间的固定时间偏移或随机选择的偏移。

公开(公告)号：US06246673B1

公开(公告)日：2001-06-12

申请号：US09515042

申请日：2000-02-25

申请人： Edward G. Tiedemann, Jr. ,  Daisuke Terasawa ,  Sandip Sarkar ,  Yu-Cheun Jou ,  Joseph P. Odenwalder ,  Abihijit Shanbhag ,  Serge Willenegger

发明人： Edward G. Tiedemann, Jr. ,  Daisuke Terasawa ,  Sandip Sarkar ,  Yu-Cheun Jou ,  Joseph P. Odenwalder ,  Abihijit Shanbhag ,  Serge Willenegger

IPC分类号： H04Q738

CPC分类号： H04W36/0094 ,  H04B1/70735 ,  H04J3/0638 ,  H04J3/0682 ,  H04W56/0015 ,  H04W56/0055

摘要： A method and system that enables faster acquisition of the forward link signal of a target base station in a mixed network of synchronous and asynchronous base stations is disclosed. The serving base station transmits in a neighbor list an estimated timing error 417 between the serving base station and a target base station. By utilizing the timing information, a mobile station estimates the relative time offset 408 between forward link signals received from the serving base station and signals received from the target base station. Timing information acquired during handoff enables accurate updating of the estimated timing error 417 subsequently transmitted in the neighbor lists by the base stations.

摘要翻译： 公开了一种能够更快地获取同步和异步基站的混合网络中的目标基站的前向链路信号的方法和系统。 服务基站在邻居列表中发送服务基站和目标基站之间的估计定时错误417。 通过利用定时信息，移动台估计从服务基站接收的前向链路信号与从目标基站接收的信号之间的相对时间偏移408。 在切换期间获取的定时信息使得能够准确地更新基站随后在邻居列表中发送的估计定时误差417。