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

Applicant: ST-Ericsson SA

Inventor： TANG, Zhixun ,  LI, Xie ,  ZHANG, Liping

IPC: H04B1/707

CPC classification number: H04L5/0073 ,  H04B1/7107 ,  H04B2201/709745 ,  H04L25/0202 ,  H04L25/0204

Abstract: 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.

公开(公告)号：EP2756603B1

公开(公告)日：2016-11-02

申请号：EP11872402.0

申请日：2011-09-14

Applicant: ST-Ericsson SA

Inventor： TANG, Zhixun ,  LI, Xie ,  ZHANG, Liping

IPC: H04B1/7107 ,  H04B1/7103 ,  H04J11/00

CPC classification number: H04L5/0073 ,  H04B1/7107 ,  H04B2201/709745 ,  H04L25/0202 ,  H04L25/0204

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

Applicant: ST-Ericsson SA

Inventor： TANG, Zhixun ,  LI, Xie ,  ZHUANG, Liang

IPC: H04B1/707

CPC classification number: H04J13/0077 ,  H04B1/707 ,  H04B1/7105 ,  H04B2201/70714 ,  H04J11/0046 ,  H04J11/005

Abstract: 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.