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US07545885B2 Compensation for the carrier frequency offset in a receiving apparatus, which is designed for a plurality of modulation types, in a mobile communications system 有权
在移动通信系统中针对多种调制类型设计的接收设备中的载波频率偏移的补偿

  • 专利标题： Compensation for the carrier frequency offset in a receiving apparatus, which is designed for a plurality of modulation types, in a mobile communications system
  • 专利标题（中）： 在移动通信系统中针对多种调制类型设计的接收设备中的载波频率偏移的补偿
  • 申请号： US11263423
    申请日： 2005-10-31
  • 公开(公告)号： US07545885B2
    公开(公告)日： 2009-06-09
  • 发明人: Giuseppe Li Puma , Markus Hammes
  • 申请人： Giuseppe Li Puma , Markus Hammes
  • 申请人地址： DE Munich
  • 专利权人： Infineon Technologies AG
  • 当前专利权人： Infineon Technologies AG
  • 当前专利权人地址： DE Munich
  • 代理机构： Eschweiler & Associates, LLC
  • 优先权： DE102004052898 20041102
  • 主分类号： H04L27/00
  • IPC分类号： H04L27/00
Compensation for the carrier frequency offset in a receiving apparatus, which is designed for a plurality of modulation types, in a mobile communications system
摘要：
The present invention relates to a receiving apparatus for a mobile communications system which can be modulated using different modulation types at the transmitter end. According to one embodiment of the invention, in the middle of a data burst of a Bluetooth communications system, a GFSK modulation method is switched to an M-DPSK modulation method, which is used for the payload data. A frequency offset estimation unit is provided for GFSK-modulated signals in a first receiving section and estimates the frequency offset by averaging over a bit sequence of a trailer of a data burst. The frequency offset is corrected in a second receiving section, by means of a frequency correction unit which operates on the basis of the CORDIC algorithm.
摘要（中）：

本发明涉及一种移动通信系统的接收装置，其可以在发射机端使用不同的调制类型进行调制。 根据本发明的一个实施例，在蓝牙通信系统的数据突发的中间，将GFSK调制方法切换到用于有效载荷数据的M-DPSK调制方法。 为第一接收部分中的GFSK调制信号提供频率偏移估计单元，并通过在数据突发的预告片的比特序列上求平均来估计频率偏移。 通过基于CORDIC算法操作的频率校正单元，在第二接收部分中校正频率偏移。

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