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- J. Medic, S. Tomazic, F. Demsar
- SIP
- 1999

We present a new Fast Frequency Selective Keyhole (FFSK) method, which allows dynamic acquisition of a low-resolution image signal from the arbitrarily chosen k-space points and reduces acquisition time of the conventional keyhole approach. Off-resonance components are eliminated by the filtering procedure which substantialy increase SNR. The effect of the… (More)

- S. Tomazic
- IEEE Signal Processing Letters
- 2000

The residual noise of the sign algorithm can be reduced by adding a uniformly distributed noise (dithering) to the sign algorithm input signal. In this paper, a simple equation for the residual noise reduction factor (RNRF) is derived for the case in which the noise in the sign algorithm input signal has a two-level discrete amplitude distribution. It is… (More)

- B. Batagelj, M. Vidmar, S. Tomazic
- Proceedings of 2004 6th International Conference…
- 2004

One of many fiber nonlinear effects is a four-wave mixing (FWM) phenomenon that is resonant when the phase matching condition is satisfied. It only occurs for particular combinations of fiber dispersion and signal frequencies. In particular, phase matching is achieved for signals with very similar frequencies propagating near the zero dispersion wavelength… (More)

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