Operating Manual Vol 1 - ES Documentation

SMIQFading SimulationPATHThe following parameter have to be set separately for each path.STATEPROFILEDISCRETE COMPPOWER RATIOSwitching on and off a path. If the cursor is placed onto a path in the diagram,it may be switched on and off by pressing one of the unit keys (togglefunction).IEC/IEEE-bus command :SOUR:FSIM:PATH3:STAT ONSelection of the fading profile.pDOPP (Pure DOPpler) Simulation of a transmission path having a singledirect connection from the transmitter to the moving receiver(discrete component). The Doppler Frequency shift is determinedby the parameters DOPPLER FREQ and FREQ RATIO.IEC/IEEE-bus command :SOUR:FSIM:PATH4:PROF PDOPRAYL (RAYLeigh) Simulation of a radio field, where a multitude ofbroadly scattered partial waves hit upon a moving receiver. Thereceiving amplitude resulting therefrom is time-varying. Theprobability density function of the receiving amplitude is describedby a Rayleigh distribution. The fading spectrum is a classicalDoppler spectrum.IEC/IEEE-bus command :SOUR:FSIM:PATH1:PROF RAYLRICE Simulation of a radio field, where apart from a multitude ofscattered partial waves, one strong direct wave (discretecomponent) hits upon a moving receiver. The probability densityfunction of the receiving amplitude is described by a Ricedistribution. The fading spectrum of an unmodulated signal is anoverlapping of a classical Doppler spectrum with a discretespectrum line.IEC/IEEE-bus command :SOUR:FSIM:PATH7:PROF RICECPHAS A radio traffic area without direct and random waves is generatedfor this fading type (no discrete and no static component).The path is multiplied by a constant "pointer“ according to thepath-specific parameter.IEC/IEEE-bus command :SOUR:FSIM:PATH3:PROF CPHShows the status of the discrete component (ON or OFF).IEC/IEEE-bus command :SOUR:FSIM:PATH4:DCOM:STAT ONInput value of the power ratio of the discrete component and distributedcomponent with Ricean fading switched on. If POWER RATIO is changed thesum of both components remains constant.IEC/IEEE-bus command :SOUR:FSIM:PATH6:PRAT 31125.5555.03 2.75 E-9