SMU_dat-sw-en.pdf - 第37页

Version 08.00, Januar y 2012 Rohde & Schwarz R&S ® SMU200A Vector Signal Generator 37 Number of fading pat hs, RF bandwidth an d timing resolution With R&S ® SMU-K71 only With R&S ® SMU-B14 Signal paths F…

Version 08.00, January 2012

36 Rohde & Schwarz

R&S

SMU200A Vector Signal Generator

Fading and noise

Fading simulator (R&S

SMU-B14 option) and fading simulator extension

(R&S

SMU-B15 option)

The R&S

SMU-B9/-B10/-B11 or R&S

SMU-B17 option is required to generate input signals for the fading simulator.

All frequency and time settings are coupled to the internal reference frequency.

with R&S

SMU-B14 1 Number of signal paths

with R&S

SMU-B14 and R&S

SMU-B15 1 or 2

only possible with R&S

SMU-B14 and R&S

SMU-B15

input both signal paths split or combined

Signal routing

output split, one signal path only or sum of both

signal paths

Number of fading paths depending on options and signal routing, see table on next page

setting range 0 dB to 50 dB

resolution 0.01 dB

Fading path loss

accuracy < 0.01 dB

setting range 0 ms to 2.56 ms

resolution 10 ns

Fading path delay

with R&S

SMU-K71 option 0.01 ns

max. 4 per signal path Delay groups

permitted delay differences within one

group

< 40 µs

at f = 1 GHz 0 km/h to 1725 km/h Speed range

accuracy < 0.128 %

setting range 0 Hz to 1600 Hz Doppler frequency

accuracy < 0.1 %

standard auto Restart

with R&S

SMU-B9/-B10/-B11 options

installed

auto, internal from baseband A or B,

external

Total insertion loss automatic or user-definable, with clipping

indicator

0 dB to 18 dB

fading paths in signal path A pairwise with fading paths in signal path B

correlation coefficient

setting range 0 % to 100 %

resolution 5 %

correlation phase

setting range 0° to 360°

Correlation

resolution 1°

Fading profiles

Rayleigh pseudo-noise interval > 93 h

frequency ratio (–1 to +1) × current Doppler frequency Pure Doppler

resolution 0.01 × current Doppler frequency

combination of Rayleigh and pure Doppler Rician

power ratio –30 dB to +30 dB

standard deviation 0 dB to 12 dB

resolution 1 dB

Lognormal

local constant at f = 1 GHz 12 m to 200 m

path loss 0 dB to 50 dB

phase 0° to 360°

Static, constant phase

resolution 1°

Version 08.00, January 2012

Rohde & Schwarz R&S

SMU200A Vector Signal Generator 37

Number of fading paths, RF bandwidth and timing resolution

With R&S

SMU-K71 only

With R&S

SMU-B14

Signal paths Fading paths RF bandwidth Timing resolution

1 20 80 MHz 10 ns

1 12 30 MHz 0.01 ns

1 8 50 MHz 0.01 ns

With R&S

SMU-B14 and R&S

SMU-B15

Signal paths Fading paths RF bandwidth Timing resolution

1 40 80 MHz 10 ns

1 24 30 MHz 0.01 ns

1 16 50 MHz 0.01 ns

2 20 80 MHz 10 ns

2 12 30 MHz 0.01 ns

2 8 50 MHz 0.01 ns

Dynamic fading and enhanced resolution (R&S

SMU-K71 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 fading and enhanced resolution can be used either on signal path A or B with one R&S

SMU-K71 option. For

dynamic fading and enhanced resolution to be used on signal paths A and B simultaneously, two R&S

SMU-K71 must be installed.

Moving delay mode

System bandwidth 50 MHz

Number of fading paths 2 per signal path

Fading profiles none

Basic delay in steps of 10 ns 0 ms to 2.56 ms

Delay variation peak to peak 0.3 µs to 40 µs

Variation period peak to peak 10 s to 500 s

Variation speed peak to peak 0 µs/s to 500 µs/s

Delay step size < 10 ps

Birth-death mode

System bandwidth 50 MHz

Number of fading paths 2 per signal path

Fading profiles pure Doppler

Delay range 0 µs to 40 µs

Delay grid 0 µs to 20 µs

Positions 3 to 50

Hopping dwell 100 ms to 5 s

Start offset separately settable for each signal path 1 ms to 200 ms

Delay resolution 10 ns

The maximum delay range of 40 µs cannot be exceeded.

Version 08.00, January 2012

38 Rohde & Schwarz

R&S

SMU200A Vector Signal Generator

Extended statistic functions (R&S

SMU-K72 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), extended statistic functions can be used either on signal path A or B with one R&S

SMU-K72 option. For extended

statistic functions to be used on signal paths A and B simultaneously, two R&S

SMU-K72 must be installed.

Fading profiles

Gauss I, Gauss II sum of two Gaussian distributions in line with DAB standard

Gauss DAB 1, Gauss DAB 2 Gaussian distribution, shifted in frequency in line with DAB standard

WiMAX™ Doppler rounded Doppler PSD model in line with IEEE 802.16a-03-01

WiMAX™ Rice like WiMAX™ Doppler plus pure Doppler in line with IEEE 802.16a-03-01

SUI1 to SUI6 in line with IEEE 802.16a-03-01 Predefined settings

DAB-RA, DAB-TU, DAB-SFN in line with EN 50248-2001

MIMO fading (R&S

SMU-K74 option)

The R&S

SMU-K74 option allows four fading channels to be simulated as is required for 1x2, 2x1 and 2x2 MIMO receiver tests.

Both the R&S

SMU-B14 and the R&S

SMU-B15 options must be installed (signal paths A and B) and two baseband sources

(R&S

SMU-B9, -B10 or -B11) must be present. By combining two instruments, it is possible to simulate receiver test scenarios for 1x3,

1x4, 2x3, 2x4, 3x1, 4x1, 3x2 and 4x2 MIMO.

standard, 80 MHz RF bandwidth,

10 ns timing resolution

with R&S

SMU-K71 option, 50 MHz RF

bandwidth, 0.01 ns timing resolution

Number of fading paths in each channel

with R&S

SMU-K71 option, 30 MHz RF

bandwidth, 0.01 ns timing resolution

Steering matrix The steering matrix can be set by setting the diagonal elements of the correlation

matrix.

The correlation between corresponding fading paths of the signal paths can be set in a

correlation matrix. For each fading path index, an individual matrix can be set.

correlation coefficient

setting range 0 % to 100 %

resolution 1 %

correlation phase

setting range 0° to 360°

Correlation

resolution 1°

Correlation matrix setting individually or with Kronecker assumption

(RX and TX antenna correlation with

automatic calculation of matrix)

Matrix representation (real, imaginary) or (magnitude, phase)

Start seed settable

1x2 MIMO

Number of signal paths with R&S

SMU-B14 and R&S

SMU-B15 2

Signal routing 1x2 MIMO, simulating fading channels

between one TX and two RX antennas

A A

1x3 MIMO

Number of signal paths

with two R&S

SMU200A, both with

R&S

SMU-B14 and R&S

SMU-B15

Signal routing 1x3 MIMO, simulating fading channels

between one TX and three RX antennas

A A