Title :
Investigation into the effects of quantisation noise on a digital FM modulator
Author :
Twelves, Sue ; Kikkert, C.J.
Author_Institution :
Dept. of Electr. & Comput. Eng., James Cook Univ. of North Queensland, Townsville, Qld., Australia
Abstract :
Test hardware for a digital FM modulator has been built using a direct digital synthesiser with a variable bit output. Both hardware and software simulations of the test system have been used to show that a 10 bit output is sufficient to produce demodulated signals which have a signal to distortion ratio of more than 80 dB
Keywords :
circuit noise; circuit testing; direct digital synthesis; frequency modulation; modulators; quantisation (signal); demodulated signals; digital FM modulator; direct digital synthesiser; hardware simulation; quantisation noise effects; signal to distortion ratio; software simulation; test system; variable bit output; Clocks; Digital modulation; Distortion; Frequency modulation; Hardware; Quantization; Signal synthesis; Table lookup; Testing; Voltage-controlled oscillators;
Conference_Titel :
TENCON '96. Proceedings., 1996 IEEE TENCON. Digital Signal Processing Applications
Conference_Location :
Perth, WA
Print_ISBN :
0-7803-3679-8
DOI :
10.1109/TENCON.1996.608833
