Invention Grant
US07706437B2 Frequency domain equalizer for wireless communications system 失效
无线通信系统的频域均衡器

  • Patent Title: Frequency domain equalizer for wireless communications system
  • Patent Title (中): 无线通信系统的频域均衡器
  • Application No.: US12050144
    Application Date: 2008-03-17
  • Publication No.: US07706437B2
    Publication Date: 2010-04-27
  • Inventor: Aryan Saed
  • Applicant: Aryan Saed
  • Agency: Stolowitz Ford Cowger LLP
  • Main IPC: H03H7/30
  • IPC: H03H7/30
Frequency domain equalizer for wireless communications system
Abstract:
The present invention relates to wireless communications and is particularly applicable to devices and modules for correcting errors introduced to a wireless signal after its transmission. An equalizer is provided which compensates for undesirable effects on received radio signals introduced by either signal processing or by the transmission medium. In operation, the equalizer multiples the complex received signal with a complex corrective signal that compensates for these effects. A tap corrective signal corrects for time-varying channel effects (i.e. channel distortions), a timing tracking signal corrects for carrier frequency offset errors, and a phase tracking signal corrects for sampling frequency offset errors.
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