SMU_dat-sw-en.pdf - 第41页

Version 08.00, Januar y 2012 Rohde & Schwarz R&S ® SMU200A Vector Signal Generator 41 Dynamic scenario simulation (R&S ® SMU-K77 option) At least one R&S ® SMU-B14 fading simulator must be install ed. If …

Version 08.00, January 2012

40 Rohde & Schwarz

R&S

SMU200A Vector Signal Generator

4x2 MIMO

Number of signal paths with two R&S

SMU200A, both with

R&S

SMU-B14 and R&S

SMU-B15;

external signal combiner required

(either baseband or RF combiner)

Signal routing 4x2 MIMO, simulating fading channels

between four TX and two RX antennas

B A

C B

2x3 MIMO

Number of signal paths with two R&S

SMU200A, both with

R&S

SMU-B14 and R&S

SMU-B15

Signal routing 2x3 MIMO, simulating fading channels

between two TX and three RX antennas

A A

B C

2x4 MIMO

Number of signal paths with two R&S

SMU200A, both with

R&S

SMU-B14 and R&S

SMU-B15

Signal routing 2x4 MIMO, simulating fading channels

between two TX and four RX antennas

Version 08.00, January 2012

Rohde & Schwarz R&S

SMU200A Vector Signal Generator 41

Dynamic scenario simulation (R&S

SMU-K77 option)

At least one R&S

SMU-B14 fading simulator must be installed. If both the R&S

SMU-B14 and the R&S

SMU-B15 are installed (signal

paths A and B), dynamic scenario simulation can be used either on signal path A or B with one R&S

SMU-K77 option. For dynamic

scenario simulation to be used on signal paths A and B simultaneously, two R&S

SMU-K77 must be installed.

Scenarios

ship to ship simulation of the signal transmission from

one object to another, each moving on a

straight line of definable direction

Predefined

tower to aircraft simulation of the signal transmission

between a tower and an aircraft; the

aircraft takes off, flies a circuit and lands

again

User-defined simulation of two moving objects trajectories and type of object (and their

limits) are fully customizable

A trajectory viewer visualizes the generated trajectories and displays the position of the objects in realtime. The display shows an x-y

and x-z view. The viewer is available for both predefined and user-defined scenarios.

Basic figures

System bandwidth 50 MHz

Number of fading paths 1 LOS per signal path

Fading profiles pure Doppler

Delay resolution 0.5 ns

Propagation delay 0 s to 160 s (corresponds to a range

difference of 0 km to 47.967 km)

Minimum position dwell time 0.1 ms

Maximum Doppler frequency shift 3 kHz

Number of simulated objects 2

Import interfaces

Trajectory description file proprietary file format (see manual) waypoints (ENU, geodetic), velocity, time

TPA file proprietary file format (see manual) time, propagation delay, attenuation

Ephemeris file AGI STK file format position (Cartesian), time, velocity

Export interfaces

Ephemeris file AGI STK file format position (Cartesian), time, velocity

Additive white Gaussian noise (AWGN, R&S

SMU-K62 option)

At least one R&S

SMU-B13 baseband main module must be installed. If two R&S

SMU-B13 are installed (paths A and B), AWGN can

be generated either on path A or B with one R&S

SMU-K62 option. For AWGN to be generated on paths A and B simultaneously, two

R&S

SMU-K62 must be installed.

Addition of an AWGN signal of settable bandwidth and settable C/N ratio or E

to a wanted signal. If the noise generator is used,

a frequency offset cannot be added to the wanted signal.

distribution density Gaussian, statistical, separate for I and Q

crest factor > 18 dB

Noise

periodicity > 48 h

setting range −30 dB to +30 dB

resolution 0.1 dB

C/N, E

uncertainty for system bandwidth = symbol

rate, –24 dB < C/N < 30 dB and

crest factor < 12 dB

< 0.1 dB

bandwidth for determining noise power

range 1 kHz to 80 MHz

System bandwidth

resolution 100 Hz

Version 08.00, January 2012

42 Rohde & Schwarz

R&S

SMU200A Vector Signal Generator

Other options

BER measurement (R&S

SMU-K80 option)

The data supplied by the DUT is compared with a reference pseudo-random bit sequence.

Clock supplied by DUT; a clock pulse is required

for each valid bit

Clock rate 100 Hz to 60 MHz

PRBS

sequence length 9, 11, 15, 16, 20, 21, 23

pattern ignore off, All 0, All 1

data enable external

modes off, high, low

restart external

Data

modes on/off

Synchronization time 28 clock cycles

Interface 9-pin D-Sub connector, D-Sub/BNC cable supplied with option

input impedance 1 k, 50 

trigger threshold

setting range 0.00 V to 2.50 V

Clock, data, enable and restart inputs

resolution 0.01 V

Polarity data, clock, data enable normal, inverted

Measurement time selectable by means of maximum number

of data bits or bit errors (max. 2

bit

each), continuous measurement

Measurement result if selected number of data bits or bit errors

is attained

BER in ppm, % or decade values

Status displays not synchronized, no clock, no data

BLER measurement (R&S

SMU-K80 option)

In BLER measurement mode, arbitrary data can be supplied by the DUT. A signal marking the block’s CRC has to be provided on the

data enable connector of the BER/BLER option.

Clock supplied by DUT; a clock pulse is required

for each valid bit

Clock rate 100 Hz to 60 MHz

input data arbitrary

data enable (marking the block’s CRC) external

Data

modes high, low

CRC type CCITT CRC16 (x

+ x

+ 1) CRC

CRC bit order MSB first, LSB first

Synchronization time 1 block

Interface 9-pin D-Sub connector, D-Sub/BNC cable supplied with option

input impedance 1 k, 50 

trigger threshold

setting range 0 V to 2.50 V

Clock, data and enable inputs

resolution 0.01 V

Polarity data, clock, data enable normal, inverted

Measurement time selectable by means of maximum number of received blocks or errors (max. 2

blocks

each), continuous measurement

Measurement result if selected number of received blocks or

errors is attained

BLER in ppm, % or decade values

Status displays not synchronized, no clock, no data