Method of reducing a peak-to-average power ratio

Details Method of reducing a peak-to-average power ratio Method of reducing a peak-to-average power ratio

2008-06-10

2008-06-10

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Transmitters

Antinoise or distortion

C375S222000, C375S295000, C375S285000, C375S299000, C375S296000, C375S260000, C375S130000, C375S316000, C375S297000, C455S114300, C455S067110, C455S103000, C455S126000

Reexamination Certificate

active

07386060

ABSTRACT:
The present invention relates to a method of reducing a peak-to-average power ratio of a signal to be transmitted. The method comprises the steps of detecting a portion of the signal being above a clipping threshold level, decomposing the portion of the signal into a number of functions, the number of functions being proportional to a duration of the portion of the signal, performing the number of soft-clippings on the signal by means of a reference function, the positions of the soft-clippings being given by the positions of the functions and the respective scalings of the reference function being determined by the amplitudes of the functions.

REFERENCES:
patent: 6130918 (2000-10-01), Humphrey et al.
patent: 6175551 (2001-01-01), Awater
patent: 6853632 (2005-02-01), Verma et al.
patent: 2002/0101936 (2002-08-01), Peregrym
patent: 2004/0203430 (2004-10-01), Morris
patent: 2006/0029158 (2006-02-01), Lipka et al.
patent: 1 195 962 (2002-04-01), None

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