Title :
An Adaptive MILC Amplification System for Adaptive MQAM Transmitters
Author :
Hamdane, W. ; Birafane, A. ; Kouki, A.B. ; Gagnon, F.
Author_Institution :
LACIME, Ecole de Technol. Super., Montreal, QC
Abstract :
This paper proposes the study of outphasing systems using the MILC architecture in the context of adaptive MQAM radio transmitters. We show that an adaptive MILC amplifier can provide considerable performance gain in efficiency and linearity when compared to the classical LINC architecture and to a standard class B amplifier. The results are validated for QPSK, 16 QAM and 64 QAM signals using a RRCF with a roll-off factor of 0.2. The amplifiers used are based on realistic class B devices available in CAD simulators.
Keywords :
adaptive signal processing; amplification; amplifiers; linearisation techniques; quadrature amplitude modulation; quadrature phase shift keying; radio transmitters; 16 QAM signal; 64 QAM signal; QPSK signal; RRCF; adaptive MILC amplification system; adaptive MQAM transmitter; class B device; linear amplification with nonlinear component; outphasing systems; Adaptive signal processing; Adaptive systems; Constellation diagram; Design methodology; Linearity; Performance gain; Quadrature phase shift keying; Radio transmitters; Table lookup; Wireless communication; Adaptive MQAM Modulation; Efficiency; LINC; Linearity; MILC;
Conference_Titel :
Signal Processing and Communications, 2007. ICSPC 2007. IEEE International Conference on
Conference_Location :
Dubai
Print_ISBN :
978-1-4244-1235-8
Electronic_ISBN :
978-1-4244-1236-5
DOI :
10.1109/ICSPC.2007.4728435
