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A peak power reduction scheme with adaptive transmit power control for multi-carrier transmission

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2 Author(s)
O. Muta ; Graduate Sch. of Inf. Sci. & Electr. Eng., Kyushu Univ., Fukuoka, Japan ; A. Akaiwa

We propose a peak-power-suppression (PPS) scheme for a multi-carrier transmission (MCT) system where subchannels are band-limited by filtering before the multiplexer. In this scheme, the transmit pulse power before filtering is decreased whenever the envelope-peak amplitude is above a given threshold level. A reduction of 75% in peak power is achieved with a little, but insignificant, degradation in BER performance by applying the PPS scheme to an MCT system with 8 subchannels under flat fading conditions. The proposed scheme is also investigated with an adaptive transmit power control, and average transmit power and peak-to-mean power ratio (PMPR) are reduced

Published in:

Vehicular Technology Conference, 1999 IEEE 49th  (Volume:3 )

Date of Conference:

Jul 1999