Title :
A peak power reduction scheme with adaptive transmit power control for multi-carrier transmission
Author :
Muta, Osamu ; Akaiwa, Yoshihiko
Author_Institution :
Graduate Sch. of Inf. Sci. & Electr. Eng., Kyushu Univ., Fukuoka, Japan
Abstract :
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
Keywords :
Rayleigh channels; adaptive control; bandlimited communication; filtering theory; interference suppression; power control; quadrature phase shift keying; radiocommunication; telecommunication control; BER performance; QPSK; Rayleigh fading; adaptive transmit power control; average transmit power; bandlimited subchannels; envelope-peak amplitude; filtering; flat fading conditions; multi-carrier transmission; multiplexer; peak power reduction; peak-power-suppression; peak-to-mean power ratio; threshold level; transmit pulse power; Adaptive control; Bit error rate; Degradation; Fading; Filtering; Filters; Intersymbol interference; OFDM; Power control; Programmable control;
Conference_Titel :
Vehicular Technology Conference, 1999 IEEE 49th
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-5565-2
DOI :
10.1109/VETEC.1999.778432
