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

fYear

2007

fDate

24-27 Nov. 2007

Firstpage

780

Lastpage

783

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICSPC.2007.4728435

Filename

4728435