| 摘要 |
The present invention relates to a method of limiting local bandwidth impairment in a telecommunications system, wherein tone reservation is used to reduce peak power of a multi-carrier signal using successive processing stages. The present invention also relates to an apparatus for limiting local bandwidth impairment and to a base station including such an apparatus. The method according to the present invention comprises the steps: generating a first peak reduction signal using reserved frequencies or tones of a first subset of frequencies or tones; generating a second peak reduction signal using reserved frequencies or tones of a second subset of frequencies or tones; extracting the In-phase components, I-components, of the first peak reduction signal and extracting the Quadrature components, Q-components, of the second peak reduction signal; and generating a third peak reduction signal by combining or adding, in the frequency domain, the I-components of the first peak reduction signal and the Q-components of the second peak reduction signal.
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