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    CHANNEL ESTIMATION METHOD, CHANNEL ESTIMATION APPARATUS AND COMMUNICATION DEVICE FOR CDMA SYSTEMS
    2.
    发明公开
    CHANNEL ESTIMATION METHOD, CHANNEL ESTIMATION APPARATUS AND COMMUNICATION DEVICE FOR CDMA SYSTEMS 有权
    信道估计方法中，CDMA系统的信道估计设备和通信设备

    公开(公告)号：EP2756603A1

    公开(公告)日：2014-07-23

    申请号：EP11872402.0

    申请日：2011-09-14

    申请人： ST-Ericsson SA

    发明人： TANG, Zhixun ,  LI, Xie ,  ZHANG, Liping

    IPC分类号： H04B1/707

    CPC分类号： H04L5/0073 ,  H04B1/7107 ,  H04B2201/709745 ,  H04L25/0202 ,  H04L25/0204

    摘要： The embodiment of the invention discloses a channel estimation method for a TD-SCDMA system. The channel estimation method comprises steps of: obtaining a coarse channel estimation of a channel l of an intra-frequency cell set by a single cell channel estimation algorithm; performing an interference cancellation on the coarse channel estimation to obtain a channel estimation; determining a channel environment according to the channel estimation; and determining a stop strategy for the interference cancellation according to the channel environment and controlling performing the interference cancellation according to the stop strategy. The embodiment of the invention also discloses a channel estimation apparatus for a TD-SCDMA system, a communication device and a computer program executing the channel estimation method.

    METHOD, APPARATUS, RECEIVER, COMPUTER PROGRAM AND STORAGE MEDIUM FOR JOINT DETECTION
    3.
    发明公开
    METHOD, APPARATUS, RECEIVER, COMPUTER PROGRAM AND STORAGE MEDIUM FOR JOINT DETECTION 审中-公开
    方法，设备，接收机，计算机程序和存储设备的联合检测

    公开(公告)号：EP2759066A1

    公开(公告)日：2014-07-30

    申请号：EP11872872.4

    申请日：2011-09-20

    申请人： ST-Ericsson SA

    发明人： TANG, Zhixun ,  LI, Xie ,  ZHANG, Liping ,  ZHANG, Daijun

    IPC分类号： H04B1/7105

    CPC分类号： H04B1/7105 ,  H04B1/7107 ,  H04B2201/70702

    摘要： A method, apparatus, receiver, computer program and storage medium for joint detection are disclosed. The joint detection method includes categorizing interference signals based on level of interference so as to obtain a strong interference signal, cancelling the strong interference signal from a received signal, and performing a joint detection by utilizing a matched filtering result of a remaining signal. In one embodiment, it is to firstly determine whether a strong interference codes corresponding to an intra-frequency adjacent cell exists in an active code list or not, recovering a strong interference signal transmitted by a Node B if the strong interference codes exists, applying an interference cancellation to a received signal received by a receiver so as to obtain a matched filtering result of a remaining signal derived by subtracting the strong interference signal from the received signal, performing a joint detection by utilizing the matched filtering result of the remaining signal, and outputting a demodulated result. In at least one embodiment, the computation complexity of the joint detection is reduced, and the accuracy of the joint detection is improved.

    METHOD AND APPARATUS FOR CODE ACTIVATION, COMPUTER PROGRAM AND STORAGE MEDIUM THEREOF
    5.
    发明公开
    METHOD AND APPARATUS FOR CODE ACTIVATION, COMPUTER PROGRAM AND STORAGE MEDIUM THEREOF 审中-公开
    方法和设备激活代码，计算机程序和存储介质THEREFOR

    公开(公告)号：EP2761764A1

    公开(公告)日：2014-08-06

    申请号：EP11873036.5

    申请日：2011-09-27

    申请人： ST-Ericsson SA

    发明人： TANG, Zhixun ,  LI, Xie ,  ZHUANG, Liang

    IPC分类号： H04B1/707

    CPC分类号： H04J13/0077 ,  H04B1/707 ,  H04B1/7105 ,  H04B2201/70714 ,  H04J11/0046 ,  H04J11/005

    摘要： This invention relates to a method and an apparatus for code activation, and a computer program and a storage medium thereof. A combined channel impulse response for each code is calculated based on a channelization code, a scrambling code and a channel impulse response corresponding to the code; a statistical result of the correlations between each interference code and all user codes is obtained; an active interference code number is determined; the determined number of interference codes, are activated, wherein a selection of which interference codes to activate is based on the statistical result. In some embodiments of this invention, the interference codes having a close correlation with the user codes may be selected to be activated, thereby the performance of joint detection is improved. In some embodiments of this invention, the complexity of the subsequent joint detection will be remarkably reduced on the premise of ensuring the performance of the joint detection.