Method for reducing the crest factor

Details Method for reducing the crest factor Method for reducing the crest factor

2004-06-03

2011-10-25

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S285000, C375S296000, C370S210000

Reexamination Certificate

active

08045627

ABSTRACT:
The invention relates to a method for reducing the crest factor of a data symbol to be transmitted in a multi-carrier data transmission system, in which the data symbol to be transmitted is a function of a multiplicity of signals provided within a predetermined data frame and each of these signals is allocated to a carrier, each carrier occupying in each case at least one frequency from a transmit data spectrum, at least one carrier being reserved which is not provided for the data transmission and the predetermined data frame exhibiting the data symbol and a prefix which is derived from a part of the data symbol, in which peak values within the prefix are also taken into consideration for reducing the crest factor.

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Henkel et al., “PAR Reduction Revisited: An Extension to Tellado's Method,” International OFDM-Workshop, Sep. 17, 2001, pp. 1-6, (6 pages).

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