Title :
An application of H∞ optimization to IQ modulator digital compensation
Author :
Lim, G. K C ; Sreeram, V.
Author_Institution :
Sch. of Electr., Electron. & Comput. Eng., Univ. of Western Australia, Crawley, WA, Australia
Abstract :
A technique is developed to design IIR filters to compensate digitally for the imperfections caused by signal reconstruction filters in an IQ modulation system. These IIR filters are obtained by posing the problem as an unconstrained optimization problem and solving it via H∞ optimization, for which there is ready-made software in MATLAB. The simulation results show that this technique is simple, efficient, and leads to substantial improvement of output envelope ripples.
Keywords :
H∞ optimisation; IIR filters; frequency shift keying; signal reconstruction; CPFSK signals; H∞ optimization; IIR filters; IQ modulator digital compensation; MATLAB; inphase-quadrature modulation; output envelope ripple; signal reconstruction filters; Digital filters; Digital modulation; Digital signal processing; Finite impulse response filter; IIR filters; MATLAB; RF signals; Reduced order systems; Signal design; Signal reconstruction;
Conference_Titel :
TENCON 2003. Conference on Convergent Technologies for the Asia-Pacific Region
Print_ISBN :
0-7803-8162-9
DOI :
10.1109/TENCON.2003.1273242
