BTC Z22 Bedienungsanleitung PDF herunterladen (Seite 44)

Version 02.00, November 2014

44 Rohde & Schwarz R&S

BTC Broadcast Test Center

Additive white Gaussian noise (AWGN; R&S

BTC-K1040 option)

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

BTC-K1040 option. For AWGN to be generated on paths A and B

simultaneously, two R&S

BTC-K1040 must be installed.

AWGN is available before fading and after fading to simulate the overall transmission channel.

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

to a wanted signal.

Noise

injection

before fading

after fading

before fading and after fading

distribution density

Gaussian, statistical, separate for I and Q

crest factor

> 18 dB

periodicity

> 48 h

operating modes

add, only

bandwidth

bandwidth coupling

on/off (settable)

receiver bandwidth

1 kHz to 120 MHz (settable)

generated noise bandwidth

100 kHz to 160 MHz (settable)

C/N, E

setting range

30 dB to +60 dB

resolution

0.1 dB

uncertainty for system bandwidth = symbol

rate, symbol rate < 4 MHz,

–24 dB < C/N < 30 dB and

crest factor < 12 dB

< 0.1 dB

System bandwidth

bandwidth for determining noise power

range

1 kHz to 160 MHz

resolution

100 Hz

Extended noise generator (R&S

BTC-K1043 option)

Impulsive noise

Pulsed addition of an AWGN signal to the useful signal with settable number of pulses per frame and within settable limits of randomly

distributed pulse intervals.

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

BTC-K1043 option. For impulsive noise to be generated on

paths A and B simultaneously, two R&S

BTC-K1043 must be installed.

Impulsive noise

required option

R&S

BTC-K1043

AWGN signal data

see R&S

BTC-K1040 option

Pulse generator

Frame

duration

10 ms, 100 ms, 1000 ms

Pulse

duration

0.25 µs, fixed

Pulses per frame

setting range

1 to 40000

Minimum pulse interval

for number of pulses > 1

setting range

0.25 µs to 16 ms

resolution

0.25 µs

Maximum pulse interval

for number of pulses > 1

setting range

0.25 µs to 16 ms

resolution

0.25 µs

Distribution of pulse intervals

function

PRBS

1 2 ... 39 40 41 42 43 44 45 46 47 48 49 ... 63 64

Kommentare zu diesen Handbüchern

Keine Kommentare

BTC Z22 Bedienungsanleitung Seite 44

Kommentare zu diesen Handbüchern