Title :
A Σ-Delta synthesizer phase noise optimization for multi-symbol rate digital microwave radio
Author :
Villeneuve, L. ; Hassaïne, N. ; Razmpoosh, B.
Author_Institution :
Microwave Commun. Div., Harris Corp., Dollard-des-Ormeaux, Que., Canada
Abstract :
The effect of synthesizer noise on digital radio systems performances, using a variable symbol rate modem, is analyzed. A Σ-Delta PLL approach is used to optimize the synthesizer phase noise. In order to establish the contribution of this parameter in such systems, a comparison of integrated phase noise for different symbol rates is given. Experimental results show the advantage of a proposed synthesizer on the integrated phase noise see through the modem.
Keywords :
digital phase locked loops; digital radio; frequency synthesizers; microwave links; modems; phase detectors; phase noise; sigma-delta modulation; band phase noise; carrier recovery cutoff frequency; digital microwave radio; digital radio systems; frequency synthesizer; integrated phase noise; optimized synthesizer phase noise; phase detector noise floor; phase fluctuations; point-to-point radios; sigma-delta PLL approach; synthesizer noise; variable symbol rate modem; Cutoff frequency; Digital communication; Fluctuations; Frequency synthesizers; Modems; Noise generators; Performance analysis; Phase detection; Phase locked loops; Phase noise;
Conference_Titel :
Microwave and Optoelectronics Conference, 2003. IMOC 2003. Proceedings of the 2003 SBMO/IEEE MTT-S International
Print_ISBN :
0-7803-7824-5
DOI :
10.1109/IMOC.2003.1244914
