Title :
All-digital frequency synthesis based on single-bit Nyquist-rate sinewave quantization with IID random dithering
Author :
Sotiriadis, Paul P. ; Stamatopoulos, Nikolaos
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Athens, Greece
Abstract :
All-digital frequency synthesis based on single-bit, Nyquist-rate, quantization of sinewave with independent and identically distributed random amplitude dithering is proposed. The output spectrum of the quantizer is derived in closed form and is related to the distribution of the random dither. Conditions for spurs-free output are derived, and the output dynamic range is defined. MATLAB simulation examples illustrate the results of the proposed approach.
Keywords :
direct digital synthesis; quantisation (signal); waveform generators; IID random dithering; MATLAB simulation; all-digital frequency synthesis; random amplitude dithering; single-bit Nyquist-rate sinewave quantization; spurs-free output; Correlation; Dynamic range; Frequency conversion; Frequency synthesizers; Noise; Quantization (signal); Synthesizers; Digital-to-frequency converter; direct digital synthesis; frequency spurs; quantization;
Conference_Titel :
European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC), 2013 Joint
Conference_Location :
Prague
DOI :
10.1109/EFTF-IFC.2013.6702179
