Title :
Symmetric lock-range multilevel quantized digital phase locked FM demodulator
Author :
Sarkar, B.C. ; Chattopadhyay, Santanu
Author_Institution :
Dept. of Phys., Burdwan Univ., India
fDate :
12/1/1990 12:00:00 AM
Abstract :
A dynamic modification algorithm of the conventional digital phase-locked loop (CDPLL) design parameters is proposed to get a modified DPLL (MDPLL) which has nearly symmetric two-sided acquisition range. With the help of extensive simulation results, it is established that in comparison to a CDPLL, the MDPLL has larger acquisition range and better FM demodulation capability. The performance degradation due to additive noise is more pronounced in the case of an MDPLL
Keywords :
analogue-digital conversion; demodulators; frequency modulation; phase-locked loops; CDPLL; FM demodulation; acquisition range; additive noise; conventional digital phase-locked loop; design parameters; modified DPLL; multilevel quantised FM demodulator; performance degradation; simulation results; Additive noise; Algorithm design and analysis; Degradation; Demodulation; Equations; Frequency; Heuristic algorithms; Noise measurement; Phase locked loops; Sampling methods;
Journal_Title :
Communications, IEEE Transactions on
