Title :
Shaping of non linearity in direct digital frequency synthesizer - An approach by Genetic algorithm
Author :
Dinesh, U. ; Ram, S. Aravind ; Hariharan, M. ; Hariharan, K.
Author_Institution :
Electron. & Commun. Eng., Thiagarajar Coll. of Eng., Madurai, India
Abstract :
Even though the hardware complexity is reduced and precision is increased in the DDFS, the obtained signal is in no match with the ideal signal. This is because of the non-linearity of DACs present in the DDFS architecture. The conventional DDFS architecture doesn´t account for the non-linearity of DAC which deteriorates the quality of the signal. This reduces the SNR and SFDR of the signal. This error can be reduced by the optimizing the values using Genetic algorithm.
Keywords :
frequency synthesizers; genetic algorithms; DDFS architecture; direct digital frequency synthesizer; genetic algorithm; hardware complexity; ideal signal; nonlinearity shaping; Frequency synthesizers; Genetic algorithms; Linearity; Optimization; Signal to noise ratio; Sociology; Statistics; DAC; Direct Digital Frequency Synthesis; Genetic algorithm; Non-linearity; SNR;
Conference_Titel :
Advances in Electrical Engineering (ICAEE), 2014 International Conference on
Conference_Location :
Vellore
DOI :
10.1109/ICAEE.2014.6838560
