The active set method of the transformation that peak-to-average power ratio reduces is realized by retaining tone

The active set method of the transformation that peak-to-average power ratio reduces is realized by retaining tone

  • CN 101,237,262 B
  • Filed: 01/30/2007
  • Issued: 07/06/2016
  • Est. Priority Date: 01/30/2007
  • Status: Active Grant
First Claim
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1. an active set peak-to-average power ratio minishing method, including:

  • Described active set is initialized as the position n of the amplitude peak sampling only comprising the signal carrying out peak-to-average power ratio reduction;

    Symbolic blocks X={X for each QAM modulation0,X1,…

    ,XN-1Calculate L over-sampling time domain primary signal x, X and represent the block of N number of complex values symbol, N represents the number of qam symbol, XiIt is (i+1) the individual qam symbol in X and is modulated on (i+1) individual subcarrier, and retain collection P={P for tone0,P1,…

    ,PN-1Calculate L over-sampling time-domain signal p0, P represents tone and retains collection, PiIt it is the value being modulated on i-th subcarrier;

    Amplitude of finding out is higher than the ratio expectation low predetermined amplitude level of peak level and position not all samplings in the active set, and is stored in test set B their position;

    Calculate the amplitude of the position sampling that is in active set exceed expectation peak level beyond value, namelyL=1,2 ..., M, wherein M represents p0The number of times of cyclic shift;

    According to equation below (1), use described beyond valueWith by the p through cyclic shift0The matrix of sampling composition solve balanced vector α

    ;

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