Orthogonal frequency division multiplex receiving system for symbol timing synchronization and its method

Orthogonal frequency division multiplex receiving system for symbol timing synchronization and its method

  • CN 1,396,729 A
  • Filed: 12/17/2001
  • Published: 02/12/2003
  • Est. Priority Date: 07/11/2001
  • Status: Active Application
First Claim
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1. , a kind of OFDM (OFDM) method of reseptance is used for that the data by the symbol units of protecting interval and useful symbol interval to form are sent the interval and carries out rapid fourier change (FFT), and this method comprises the following steps:

  • From received ofdm signal, extract interval with predetermined sample and be inserted into scattered pilots in the code element;

    Adopt the scattered pilots estimating code element timing shift that is extracted, and in data send at interval, the symbol timing synchronous points is set;

    WithWill be in data send at interval the sample in the predetermined space and by from the useful symbol interval that begins with the symbol timing synchronous points, deducting the sample addition in the interval that predetermined length obtains, and addition result is carried out FFT.

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