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WiLANTA
LVSG11b/g
802.11 Signal Generator |
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WiLANTA
LVSG11b/g/Overview |
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Signal
sources are needed in R&D (or Production) for testing RF modules
to evaluate basic WLAN Receiver functionality or when new designs
are being evolved. Engineers now have a highly precise and
flexible signal generation tool WiLANTA – LVSG11b/g with the
required performance for rapid testing using signals compliant to
the standard specifications. |
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WiLANTA –
LVSG11b/g Feature Highlights: |
 Supported frequency range -
2.4 GHz band
Supported Data Rate -
1,2,5.5,6,9,11,12,18,22,24,33,36,48,54 Mbps
High modulation accuracy
Supports all possible
modulation formats and techniques of 802.11b/g
Fully-coded 802.11b/g WLAN
PHY frames enable FER, PER, and BER for testing receiver sensitivity
User defined, predefined,
text and PRBS data generator
Scrambler on/off control
Capable for generating
802.11b/g signals for R&D and production testing of WLAN receivers
Signals contain the necessary
PHY information and frame structures to test WLAN receivers
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Screenshots |
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WLAN OFDM Transmitter
I/Q view allows you to view complex components of the signal
without changing settings or measurements. |
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Overview |
WiLANTA- LabVIEW is a
comprehensive IEEE 802.11b/g standards specific, RF and Baseband
measurement, testing and analysis tool for overall PHY layer
performance of WLAN Transmitters and Receivers using National
Instruments. WiLANTA offers an extensive range of preprogrammed test,
analysis and measurement features. The WiLANTA suite comprises of a
WiLANTA – Signal Generator LVSG11b/g and WiLANTA - Signal Analyzer
LVSA11bg.
WiLANTA Signal Generator LVSG11b/g is capable of generating
802.11b and 802.11g PHY Baseband data and seamlessly integrates with
NI-PXI-5670 RFSG to generate RF test signals for transmission in the
2.4 GHz band (802.11b/g).WiLANTA Signal Generator LVSG11b/g is an
essential tool for testing DUT’s Receiver performance characteristics
like Receiver sensitivity, Jamming Resistance, PER, BER.
WiLANTA LVSG11b/g allows to model or add impairments like
Channel (AWGN/Fading)
Freq Offset Addition and/or
correction
I/Q Gain Imbalance
Phase Noise
Memoryless Nonlinearity
Quadrature Skew
DC offset
Power Amplifier Backoff
The designers can analyze the above impairments on receiver side with
the help of a powerful signal analyzer tool – WiLANTA LVSA11bg
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WLAN standards supported |
802.11b and 802.11g |
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Framing |
Burst
framed data includes preamble and header fields |
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Modulation Formats |
DSSS, OFDM, CCK, PBCC |
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Modulation Techniques |
DBPSK,
DQPSK, BPSK, QPSK, 8-PSK, 16-QAM, 64-QAM |
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Data source |
PRBS sequence, User-defined and text
messages |
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Payload data length |
Maximum: 2346 bytes / Minimum: 1 byte |
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Encoding rates |
1/2, 2/3, 3/4 |
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Baseband filtering |
None,
root cosine |
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Windowing for OFDM modes |
Time-domain windowing for each OFDM
symbol |
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Scrambler |
On,
off |
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Service field |
0 to FFFF Hex (16 bits: First 7 LSB
are masked to 0) |
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Scrambler seed initialization value |
OFDM:
Random. All other modulation schemes – as specified in respective
standards. |
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Signal
Generation Setup for WLAN Receiver testing |
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System
Requirements |
System Memory: Minimum 512
MB, recommended 1GB
Disk Space: 100 MB
OS: Windows 2000/NT/XP
NI-PXI 5670 RF Signal
Generator
Drivers : NI PXI RFSG 5670
Ver 1.1
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WiLANTA
Signal Generator LVSG11b/g Advantage |
Generates accurate data which
helps the designers to test Receiver performance with ease
Easy to use GUI
Designers can move quickly
from simulation domain to generation of real world 802.11b/g systems
Verification of chip designs
WiLANTA users have the
flexibility of adding impairments at the transmitter end i.e., during
signal generation or at the receiver side during signal analysis
The vendors can make use of
WiLANTA Signal Generator LVSG11bg to ensure interoperability between
WLAN (802.11b/g) products from different vendors & measure performance
Seamless integration with NI
PXI 5670 R FSG |
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