• 专利标题: Peak-to-average power ratio reduction for IQ transmitters
  • 申请号: US16607893
    申请日: 2017-06-27
  • 公开(公告)号: US11038732B2
    公开(公告)日: 2021-06-15
  • 发明人: Christian Mayer
  • 申请人: Apple Inc.
  • 申请人地址: US CA Cupertino
  • 专利权人: Apple Inc.
  • 当前专利权人: Apple Inc.
  • 当前专利权人地址: US CA Cupertino
  • 代理机构: Eschweiler & Potashnik, LLC
  • 国际申请: PCT/US2017/039435 WO 20170627
  • 国际公布: WO2019/005007 WO 20190103
  • 主分类号: H04L27/26
  • IPC分类号: H04L27/26 H04L27/34
Peak-to-average power ratio reduction for IQ transmitters
摘要:
A method configured to clip an I signal and a Q signal according to a clipping boundary, includes receiving an I value and a Q value, wherein the I value and Q value define Cartesian coordinates of a data point being transmitted on the real and imaginary axes of the complex plane, respectively; determining a clipping error between the I value and the Q value and the clipping boundary; combining the clipping error with the I value to generate a clipped I value; combining the same clipping error with the Q value to generate a clipped Q value; and providing the clipped I value and the clipped Q value to a radio frequency digital-to-analog converter (RFDAC) in a transmit chain.
信息查询
0/0