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    • 3. 发明授权
    • Maximum ratio combining of channel estimation for joint detection in TD-SCDMA systems
    • TD-SCDMA系统联合检测信道估计的最大比组合
    • US07343155B2
    • 2008-03-11
    • US10966955
    • 2004-10-15
    • Jian ChengJiayi Zhuang
    • Jian ChengJiayi Zhuang
    • H04Q7/20
    • H04J13/00H04B1/7105
    • The embodiments of the present invention relate to the general area of wireless communication systems and, in particular, to channel estimation for joint detection of data signals in TD-SCDMA systems. While time slots and spreading codes separate the users in a TD-SCDMA system, multiple access interference affects all its users. To deal with this problem detection schemes such as joint detection are used, which process all users' signals in parallel and include the interference information from all the users. An important part of the joint detection process is channel estimation and, as such, affects the detection process in different ways. In general, the more accurate the channel estimation is, the better the system performance will be. This invention presents methods and systems for channel estimation of TD-SCDMA systems.
    • 本发明的实施例涉及无线通信系统的一般领域,特别涉及TD-SCDMA系统中数据信号联合检测的信道估计。 虽然时隙和扩展码分离了TD-SCDMA系统中的用户,但多址接入干扰会影响其所有用户。 为了解决这个问题,使用诸如联合检测的检测方案,其并行处理所有用户的信号并且包括来自所有用户的干扰信息。 联合检测过程的一个重要部分是信道估计,因此以不同的方式影响检测过程。 一般来说,信道估计越精确,系统性能就越好。 本发明提出了用于TD-SCDMA系统信道估计的方法和系统。
    • 5. 发明申请
    • Method and apparatus of channel estimation in an intra-frequency cell
    • 在频率小区内信道估计的方法和装置
    • US20070058697A1
    • 2007-03-15
    • US11518395
    • 2006-09-08
    • Jian ChengLiyun Luo
    • Jian ChengLiyun Luo
    • H04B1/00
    • H04B1/7105H04B2201/70701
    • This invention discloses a channel estimation method for partial IC in TD-SCDMA intra-frequency cell, Specifically IC or de-correlation multi-user detection is utilized. Partial IC is implemented to realize the joint detection of the channel in several intra-frequency cells. As to n cells, the detailed procedures go as follows: At first, n 2×128 memories are established, just as s1, s2, s3, . . . sn, in order to store the complex serial. Midamble codes of the received signal constitute the 128-chip data. Step 1: The data taken from Midamble codes of the received signals undergo the Partial IC process of the residual past in the first cell. The process of channel estimation in the first cell is undertaken. Afterwards, the received signals of UE from the 1st cell are recovered. The channel of the other cells is estimated from the received signals and the received signals of corresponding Midamble code is recovered to repeat the above procedures, until the completion of the process of the received signal, and it comes to Step (n+1). Iteration once is finished from Step 1 to Step (n+1), in which n processes are involved and one process is correspondent to one cell. The iteration after m times will finalize the channel estimation.
    • 本发明公开了一种用于TD-SCDMA频率小区中部分IC的信道估计方法,具体使用IC或去相关多用户检测。 实现部分IC实现在几个频率内小区中的信道的联合检测。 对于n个单元,详细的过程如下:首先,建立n×2×128个存储器,就像s1 / 2,s2,..., SUB>,。 。 。 s ,以便存储复合序列。 接收信号的Midamble码构成128芯片数据。 步骤1:从接收信号的Midamble码获取的数据经历第一个小区中剩余过去的部分IC处理。 在第一个单元中进行信道估计的过程。 之后,恢复来自1 小区的UE的接收信号。 根据接收到的信号估计其他小区的信道,并恢复相应Midamble码的接收信号,以重复上述过程,直到接收到的信号的处理完成,并且进入步骤(n + 1)。 迭代一次从步骤1到步骤(n + 1)完成,其中涉及n个过程,一个过程对应于一个单元。 m次之后的迭代将完成信道估计。
    • 6. 发明申请
    • GSM/GPRS desktop phone message banner
    • GSM / GPRS桌面电话留言横幅
    • US20070033099A1
    • 2007-02-08
    • US11195296
    • 2005-08-02
    • Xiongwei Zhu
    • Xiongwei Zhu
    • G06Q30/00
    • G06Q10/107G06Q10/103G06Q30/0241
    • Systems and methods are provided for displaying messages or other information on the display screen of a telephone, preferably a desktop phone. The messages or other information may be pre-loaded into the phone's memory, such as the nonvolatile, or flash, memory of the phone, or they may be received from a messaging service, or downloaded from the Internet, or from files stored in a computer, or from another suitable source. The messages or other information are preferably displayed when the phone is in standby mode, but they may also be displayed while the phone is in use.
    • 系统和方法被提供用于在电话机,优选桌面电话的显示屏上显示消息或其他信息。 消息或其他信息可以预先加载到电话的存储器中,例如电话的非易失性或闪存存储器,或者它们可以从消息服务接收,或者从因特网下载,或从存储在 计算机,或从另一个合适的来源。 当电话处于待机模式时,优选地显示消息或其他信息,但是也可以在电话使用时显示消息或其他信息。
    • 7. 发明申请
    • Method for cell locking in a wireless communication device
    • 无线通信设备中的小区锁定方法
    • US20060063530A1
    • 2006-03-23
    • US11205359
    • 2005-08-16
    • Yongwei Niu
    • Yongwei Niu
    • H04Q7/20
    • H04W48/20H04W8/005H04W24/00
    • A method is provided for fixing the use of a wireless communication device in certain cell areas. The method comprises: determining the predetermined number of strongest cells and checking each of the cells in descending order of received signal level to determine whether this cell belongs to one of the operator-permitted cells. If not, the signal strength of this cell is set to zero. The checking process continues until an operator-permitted cell is found, at which point the wireless terminal marks this cell as the serving cell. If after the completion of the checking of all of the cells without finding a suitable cell, the wireless terminal enters a limited service state.
    • 提供了一种固定无线通信设备在某些小区区域中的使用的方法。 该方法包括:以接收信号电平的降序确定预定数量的最强小区并检查每个小区,以确定该小区是否属于运营商允许的小区之一。 如果不是,则将该单元的信号强度设置为零。 检查过程继续,直到找到运营商允许的小区,此时无线终端将该小区标记为服务小区。 如果在完成对所有小区的检查而没有找到合适的小区之后,无线终端进入有限的服务状态。