Title :
Tracking performance of the soft digital data transition tracking loop
Author :
Million, S. ; Hinedi, S.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
This paper evaluates the steady-state tracking performance of the soft DTTL symbol synchronizer which is a low SNR approximation of the hyperbolic tangent nonlinearity in the in-phase channel. The normalized s-curve, slope of the s-curve, and normalized noise density are derived and compared to the hard DTTL which is a high SNR approximation of the nonlinearity. Moreover, the symbol SNR region where the steady-state timing jitter of the soft DTTL outperforms that of the hard DTTL is determined
Keywords :
digital radio; jitter; noise; radio receivers; synchronisation; telecommunication channels; tracking; digital radio communication; hard DTTL; hyperbolic tangent nonlinearity; in-phase channel; low SNR approximation; normalized noise density; normalized s-curve; s-curve slope; satellite receivers; soft DTTL symbol synchronizer; soft digital data transition tracking loop; steady-state timing jitter; steady-state tracking performance; symbol SNR; Binary phase shift keying; Delay estimation; Detectors; Jitter; Laboratories; Propulsion; Signal to noise ratio; Steady-state; Timing; Tracking loops;
Conference_Titel :
Communications, 1997. ICC '97 Montreal, Towards the Knowledge Millennium. 1997 IEEE International Conference on
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-3925-8
DOI :
10.1109/ICC.1997.604938
