Title :
Nonlinear Distortion Cancellation in a LINC Transmitter using Genetic Algorithms
Author :
Garcia, Paloma ; De Mingo, Jesús ; Valdovinos, Antonio
Author_Institution :
Aragon Inst. Eng. Res., Zaragoza Univ.
Abstract :
The linear amplification using nonlinear components (LINC) technique is a well-known power amplifier linearization method to reduce adjacent channel interference in a nonconstant envelope modulation system. Its major drawback is the inherited sensitivity to gain and phase imbalances between the two amplifier branches. This work describes a method to correct gain and phase imbalances in LINC transmitters. The proposed method is based on genetic algorithms and it obtains a suitable solution for complex coefficients to adjust gain and phase imbalances. The method functionality has been verified by means of simulation
Keywords :
adjacent channel interference; genetic algorithms; interference suppression; mobile radio; nonlinear distortion; power amplifiers; radio transmitters; radiofrequency amplifiers; telecommunication channels; adjacent channel interference reduction; genetic algorithms; linear amplification using nonlinear components; nonconstant envelope modulation system; nonlinear distortion cancellation; phase imbalances; power amplifier linearization method; Frequency conversion; Genetic algorithms; Genetic engineering; Interchannel interference; Mobile communication; Nonlinear distortion; Particle separators; Power amplifiers; Power engineering and energy; Radio transmitters; Amplifier linearization; LINC transmitter; genetic algorithm; imbalances correction;
Conference_Titel :
Wireless Communication Systems, 2005. 2nd International Symposium on
Conference_Location :
Siena
Print_ISBN :
0-7803-9206-X
DOI :
10.1109/ISWCS.2005.1547775
