发明申请
US20050083998A1 Data demodulation for a CDMA communication system 有权
CDMA通信系统的数据解调

  • 专利标题: Data demodulation for a CDMA communication system
  • 专利标题(中): CDMA通信系统的数据解调
  • 申请号: US10688145
    申请日: 2003-10-17
  • 公开(公告)号: US20050083998A1
    公开(公告)日: 2005-04-21
  • 发明人: Tao LiLi Zhang
  • 申请人: Tao LiLi Zhang
  • 主分类号: H04J11/00
  • IPC分类号: H04J11/00 H04B1/707
Data demodulation for a CDMA communication system
摘要:
An integrated circuit that performs data demodulation on partially despread symbols includes a despreading unit, a channel compensation unit, and a symbol combiner. The despreading unit despreads input samples and provides despread symbols for a first code channel with a first spreading factor. The channel compensation unit multiplies the despread symbols with channel estimates and provides demodulated symbols. The symbol combiner combines groups of demodulated symbols to obtain recovered data symbols for a second code channel with a second spreading factor that is an integer multiple of the first spreading factor. The channel compensation and symbol combining are dependent on whether or not transmit diversity is used. For a TDM design, despread symbols for multiple first code channels are processed in a TDM manner, one channel at a time, to obtain recovered data symbols for multiple second code channels. The channel compensation unit and symbol combiner can be operated in a pipelined manner.
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