Invention Grant
US08223891B2 Method and system for a reference symbol (RS) frequency control loop for TCXO synchronization and tracking 有权
用于TCXO同步和跟踪的参考符号(RS)频率控制回路的方法和系统

  • Patent Title: Method and system for a reference symbol (RS) frequency control loop for TCXO synchronization and tracking
  • Patent Title (中): 用于TCXO同步和跟踪的参考符号(RS)频率控制回路的方法和系统
  • Application No.: US12184410
    Application Date: 2008-08-01
  • Publication No.: US08223891B2
    Publication Date: 2012-07-17
  • Inventor: Mark Kent
  • Applicant: Mark Kent
  • Applicant Address: US CA Irvine
  • Assignee: Broadcom Corporation
  • Current Assignee: Broadcom Corporation
  • Current Assignee Address: US CA Irvine
  • Agency: Sterne, Kessler, Goldstein & Fox PLLC
  • Main IPC: H04L27/00
  • IPC: H04L27/00
Method and system for a reference symbol (RS) frequency control loop for TCXO synchronization and tracking
Abstract:
Aspects of a method and system for an RS frequency control loop for TCXO synchronization and tracking may include tracking a carrier frequency in an Orthogonal Frequency Division Multiplexing (OFDM) signal based on at least a reference symbol set. A receiver frequency may be adjusted based on at least the tracked carrier frequency. The carrier frequency may be tracked by generating an output signal as a function of a frequency offset Δf in a frequency discrimination feedback loop. The reference symbol (RS) set may be generated in an RS extraction module or circuit, from at least a fast Fourier transform of the received OFDM signal. The receiver frequency may be coarsely adjusted and then finely adjusted. The coarse receiver frequency adjustment may be based on processing at least a primary synchronization signal and a secondary synchronization signal.
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