Publication detail

Discrete-time Phase and Delay Locked Loops Analyses in Tracking Mode

ŠEBESTA, J.

Original Title

Discrete-time Phase and Delay Locked Loops Analyses in Tracking Mode

Type

conference paper

Language

English

Original Abstract

Phase locked loops (PLL) and delay locked loops (DLL) play an important role in establishing coherent references (phase of carrier and symbol timing) in digital communication systems. Fully digital receiver including digital carrier synchronizer and symbol timing synchronizer fulfils the conditions for universal multi-mode communication receiver with option of symbol rate setting over several digit places and long-term stability of requirement parameters. Afterwards it is necessary to realize PLL and DLL in synchronizer in digital form and to approach to these subsystems as a discrete representation of analog template. Analysis of discrete phase locked loop (DPLL) or discrete delay locked loop (DDLL) and technique to determine their characteristics based on analog (continuous-time) template is performed in this posed paper. There are derived transmission response and error function for 1st order discrete locked loop and resulting equations and graphical representations for 2nd order one. It is shown that the spectrum translation due to sampling takes effect at frequency characteristics computing for specific values of loop parameters.

Keywords

Carrier synchronization, Coherent demodulation, Software defined receiver, Symbol timing

Authors

ŠEBESTA, J.

RIV year

2007

Released

22. 11. 2007

Publisher

WASET

Location

Venice, Italia

Pages from

181

Pages to

185

Pages count

4

BibTex

@inproceedings{BUT23944,
  author="Jiří {Šebesta}",
  title="Discrete-time Phase and Delay Locked Loops Analyses in Tracking Mode",
  booktitle="Proceedings of World Academy of Science, Engineering, and Technology - IV. International Conference on Computer, Electrical, and System Science, and Engineering CESSE 2007, Venice, Italy, November 23-25, 2007",
  year="2007",
  series="1",
  number="1",
  pages="181--185",
  publisher="WASET",
  address="Venice, Italia"
}