Invention Application
US20150312079A1 Estimation of CFO Based on Relative Values of Frequency Bins Corresponding to Used Subcarriers of Received Preamble Symbols for OFDM Systems 有权
基于与OFDM系统的接收前导符号的使用子载波相对应的频率段相对值的CFO估计

  • Patent Title: Estimation of CFO Based on Relative Values of Frequency Bins Corresponding to Used Subcarriers of Received Preamble Symbols for OFDM Systems
  • Patent Title (中): 基于与OFDM系统的接收前导符号的使用子载波相对应的频率段相对值的CFO估计
  • Application No.: US14428022
    Application Date: 2013-10-10
  • Publication No.: US20150312079A1
    Publication Date: 2015-10-29
  • Inventor: Achraf DHAYNI
  • Applicant: ST-ERICSSON SA
  • Applicant Address: CH Plan-les-Ouates
  • Assignee: ST-Ericsson SA
  • Current Assignee: ST-Ericsson SA
  • Current Assignee Address: CH Plan-les-Ouates
  • Priority: EP12306259.8 20121012
  • International Application: PCT/EP2013/071199 WO 20131010
  • Main IPC: H04L27/26
  • IPC: H04L27/26
Estimation of CFO Based on Relative Values of Frequency Bins Corresponding to Used Subcarriers of Received Preamble Symbols for OFDM Systems
Abstract:
It is proposed a method for receiving and demodulating an orthogonal frequency division multiplexing signal received through a transmission channel (TC) by a receiver (RCV), comprising demultiplexing said signal to generate time symbols (yl(n)) and performing a time-to-frequency conversion of these time symbols to generate frequency bins (Yl(k)) corresponding to received symbols, the received symbols comprising preamble symbols. The method comprises: Determining an estimated carrier frequency offset on the basis of frequency bins corresponding to used subcarriers of the preamble symbols; Applying said estimated carrier frequency offset to the time symbols so as to correct the carrier frequency of these received symbols.
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