Invention Grant
US08208457B2 Symbol-level adaptation method, memory, equalizer and receiver for implementing this method 有权
符号级适应方法,存储器,均衡器和接收器,用于实现该方法

  • Patent Title: Symbol-level adaptation method, memory, equalizer and receiver for implementing this method
  • Patent Title (中): 符号级适应方法,存储器,均衡器和接收器,用于实现该方法
  • Application No.: US12299301
    Application Date: 2007-02-08
  • Publication No.: US08208457B2
    Publication Date: 2012-06-26
  • Inventor: Ahmet BastugPierre Demaj
  • Applicant: Ahmet BastugPierre Demaj
  • Applicant Address: CH Geneva
  • Assignee: ST-Ericsson SA
  • Current Assignee: ST-Ericsson SA
  • Current Assignee Address: CH Geneva
  • Agency: Hogan Lovells US LLP
  • Priority: EP06300156 20060222
  • International Application: PCT/IB2007/050411 WO 20070208
  • International Announcement: WO2007/096799 WO 20070830
  • Main IPC: H04B7/216
  • IPC: H04B7/216 H04W4/00
Symbol-level adaptation method, memory, equalizer and receiver for implementing this method
Abstract:
A symbol-level adaptation method to adapt at least one coefficient of an equalizer, wherein the method comprises the steps of: a) determining (144) if there exists a shortened pilot channelization code which has a spreading factor shorter than the spreading factor of a full pilot channelization code and which is, at the same time, still orthogonal to any other simultaneously active channelization codes, and, b) if there exists a shortened pilot channelization code, despreading (162) the pilot channel using the shortened pilot channelization code to obtain a pilot symbol estimation, and c) adapting (168) the value of the equalizer coefficient according to the error between the pilot symbol estimation obtained from step b) and a corresponding expected pilot symbol.
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