Synchronization method and equipment for multi-carrier communication system

Synchronization method and equipment for multi-carrier communication system

  • CN 101,409,700 A
  • Filed: 11/27/2008
  • Published: 04/15/2009
  • Est. Priority Date: 11/27/2008
  • Status: Active Application
First Claim
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1. , a kind of multi-carrier communications systems method for synchronous, wherein:

  • May further comprise the steps at transmitting terminal;

    With non-repetition polynomial sequence as synchronizing symbol;

    Described synchronizing symbol and signal to be sent are carried out sending to receiving terminal after multiplexing;

    May further comprise the steps at receiving terminal;

    The described synchronizing symbol that receives is divided into front and rear, calculates the conversion multinomial according to described front and rear;

    With the division of signal that receives is front and rear, carries out auto-correlation computation with described conversion multinomial respectively, and obtains the frame synchronization estimated position;

    Calculate the argument of described frame synchronization estimated position, described argument is the frequency offset estimating value;

    According to described frame synchronization estimated position and described frequency offset estimating value the described signal that receives is carried out compensate of frequency deviation;

    Received signal behind the described compensate of frequency deviation is correlated with local known transmission synchronizing sequence, and by finding the maximum cross correlation peak to determine the position of sign synchronization;

    With described sign synchronization position is starting point, extracts synchronizing symbol and data symbol from described received signal, finishes sign synchronization.

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