Title: Phase annoying method of signal peak even power rate suppressed quadrature frequency division complex
Application Number: 03160229 Application Date: 2003.09.28
Publication Number: 1601940 Publication Date: 2005.03.30
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H04J11/00,H04J1/00,H04L27/00,H04B7/005,H04K3/00
Applicant(s) Name: Inst of Semiconductor, C,A,S Address: 100083
Inventor(s) Name: Liu Yang
Attorney & Agent: tang baobeng
Abstract:
     The method includes phase perturbation of information element and phase perturbation of suppression element. In orthogonal FDM system of using phase perturbation method for suppressing peak average power ratio, modulation vector is composed of component of information element and component of suppression element. Characters are that the method includes following steps: (1) when peak average power ratio is larger than threshold value setup in time domain, pseudo-random phase is added to information element phase; (2) perturbation phase of suppression element is obtained through searching by using gradient algorithm; (3) after sampling and demodulating, receiver deletes information in frequency domain on relevant sub carrier wave directly so as to obtain useful information.
Time: 6