3GPPFDD RF OccupiedBW

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3GPPFDD_RF_OccupiedBW

Description: 3GPP occupied band width measurements
Library: 3GPPFDD, Measurement
Class: TSDF3GPPFDD_RF_OccupiedBW

Name	Description	Default	Unit	Type	Range
SpecVersion	version of specifications: Version_03_00, Version_12_00, Version_03_02	Version_12_00		enum
RLoad	input resistance	DefaultROut	Ohm	real	(0, ∞)
RTemp	temperature of resistor, in celsius	DefaultRTemp		real	[ -273.15:inf )
FCarrier	frequency of carrier	1950e6	Hz	real	[0, ∞)
SpecMeasResBW	Spectrum resolution bandwidth	0	Hz	real	[0, ∞)
SpecMeasWindow	Window type: none, Hamming 0.54, Hanning 0.50, Gaussian 0.75, Kaiser 7.865, HP8510 6.0, Blackman, Blackman-Harris	none		enum
SamplesPerChip	samples per chip	8		int	[1:256]
LinkDir	link direction: Downlink, Uplink	Uplink		enum
ScrambleCode	index of scramble code	0		int	[0:511] for downlink; [0:16777215] for uplink
ULScrambleType	uplink scramble code type: LONG, SHORT	LONG		enum
ScrambleOffset	scramble offset in downlink channels	0		int	[0:15]
DLScrambleType	downlink scramble code type: Normal, RightAlternate, LeftAlternate	Normal		enum
SpreadCode	index of spread code	0		int	[0:255] for uplink DPCCH; [0:SF-1] for downlink; SF is set by SlotFormat
SlotFormat	slot format	0		int	[0:5] for uplink DPCCH; [0:16 ] for downlink DPCH
StartSlot	number of slot to be ignored	0		int	[0, ∞)
SlotNum	number of slots measured	1		int	[0:100]
SCH	switch for SCH: OFF, ON	ON		enum
CPICH	switch for CPICH: OFF, ON	OFF		enum
SearchLength	Search length	.00001 sec	sec	real	(0:(400.0/3840000))
SlotBoundary	slot boundary in terms of sample	0		int	[0:int(SearchLength3840000SamplesPerChip)]

Pin	Name	Description	Signal Type
1	RFin	input RF signal	timed

This subnetwork model is used to measure the occupied bandwidth for 3GPP FDD transmitter.
The schematic for this subnetwork is shown in the following figure.

Schematic of 3GPPFDD_RF_OccupiedBW
Test signals are aligned at the specified slot boundary; signals within the desired slots are sent to a spectrum analyzer. The occupied bandwidth can be measured by determining the bandwidth that accommodates 99.9% of the transmitted power. This procedure can be implemented in the data display sheet.
Use of this model is demonstrated in base station and user equipment transmitter examples: File > Example Project > WCDMA3G > WCDMA3G_BS_Tx_prj > BS_Tx_Occupied_BW.dsn and WCDMA3G_UE_Tx_prj > UE_Tx_Occupied_BW.dsn . Simulation results are provided in Data Display windows for these designs.