|
|
|
WiLANTA
LVSG11abg: IEEE 802.11a/b/g PHY+MAC Signal Generation Solution |
|
|
|
|
|
WiLANTA LVSG11bg-Rx
Testing |
Overview
Signal sources are needed in R&D (or Production) for testing RF
modules to evaluate basic WLAN Receiver functionality and when new RF
designs are being evolved. Engineers now have a highly precise and
flexible signal generation solution to do so.
WiLANTA LVSG11bg is a comprehensive software for generating IEEE
802.11b and IEEE 802.11g compliant signals (including their PHY+MAC
layers) in the 2.4 GHz ISM (Industrial Scientific and Medical) band.
WiLANTA LVSG11bg seamlessly integrates with the NI PXI RFSG 5670 to
generate ideal and/or impaired IEEE 802.11b/g compliant RF signals,
providing the user with complete control over the MAC frames
(Management, Control and Data).
It facilitates configuration of all the MAC frame fields as mentioned
in the standard along with duration ID (lets you to set the network
allocation vector field and amount of time the frame occupies the
channel). WiLANTA LVSG11bg generates multiple frames (i.e., frame
sequences) in just one click. The sequence can be a combination of
various frame types. This saves the time spent on configuring
individual frame types.
The measurement set includes Power Spectral density plot, IQ Plots,
Transmitter Power Plot, Constellation and Eye diagrams. |
|
|
|
Features |
|
|
|
Standards Supported |
|
|
|
|
|
IEEE 802.11g |
|
|
IEEE 802.11b |
|
|
|
|
Supported frequency range |
|
|
|
|
|
2.4 GHz band |
|
|
|
|
Data Rates Supported |
|
|
|
|
|
1,2,5.5,6,9,11,12,18,24,36,48,54 Mbps |
|
|
|
|
Modulation
formats Supported |
|
|
|
|
|
OFDM |
|
|
CCK/DSSS |
|
|
|
|
Supports all the Sub Frame types
mentioned in standard |
|
|
|
|
|
Measurements |
|
|
|
|
IQ plot |
|
|
Constellation Diagram |
|
|
Transmit
power plot |
|
|
Power
Spectrum plot |
|
|
CCDF plot |
|
|
|
|
|
Generate multiple frames or sequence
of frames in one shot |
|
|
|
|
Mode of
Transmission |
|
|
|
Continuous
mode transmission |
|
|
|
|
|
Modulated
Spectrum |
|
|
Unmodulated
Carrier |
|
|
|
|
Burst mode
transmission |
|
|
|
|
|
Packet
transmission |
|
|
|
|
|
Data
configuration patterns |
|
|
|
|
|
User defined
pattern |
|
|
Predefined
pattern |
|
|
Text message |
|
|
PRBS (PN
Sequence) |
|
|
|
Impairments Supported |
|
|
|
|
|
Memoryless
Nonlinearity |
|
|
AWGN (Additive
White Gaussian Noise) |
|
|
Frequency Offset |
|
|
DC Offset
|
|
|
I/Q gain
imbalance |
|
|
Quadrature skew |
|
|
Phase noise |
|
|
|
|
Configurations |
|
|
|
|
|
Enable/Disable
MAC configuration |
|
|
Enable/Disable
Impairments Configuration |
|
|
Enable/Disable
Scrambler |
|
|
Adjust transmit
frequency |
|
|
Configure Output
Power |
|
|
|
|
Display Parameters |
|
|
|
|
|
Standard |
|
|
Modulation |
|
|
Data Rate
|
|
|
Number of
packets transmitted |
|
|
Data Payload
(Octets) |
|
|
Impairments
Applied |
|
|
Network Type |
|
|
Frame and
subframe Type |
|
|
Destination and
Source Addresses |
|
|
BSSID |
|
|
FCS |
|
|
Entire Frame
Body |
|
|
|
|
Extensive Graphical capabilities |
|
|
|
|
|
User defined
plot color and style of lines |
|
|
Zoom |
|
|
Markers |
|
|
|
|
|
 |
|
 |
Table 1: WLAN Standards Supported |
|
|
Full control over MAC
Frames
WiLANTA LVSG11bg provides the functionality to generate all IEEE
802.11b/g MAC frames mentioned in the standard. WiLANTA LVSG11bg
facilitates the configuring of various frame fields such as Frame
type, sub frame type, Network type, Destination address, Source
address, BSSID, Duration ID (Set NAV, time occupied by frame),
Fragment number, and Sequence number. The generator offers Enabling/
Disabling of WEP Encryption and retransmission of previous frames. The
power management status can be set as ‘Active Mode’ or ‘Power Saving
Mode’.
Figure 1: IEEE 802.11b/g MAC Frame
Format |
|
|
Table 2: IEEE 802.11b/g MAC Frame and
Sub Frame types supported by WiLANTA LVSG11bg |
|
|
|
Generate impaired signals |
| |
|
For simulation
purpose WiLANTA LVSG11bg allows modeling and viewing of various
impairments. The addition of these impairments transforms WiLANTA
LVSG11bg from ideal signal generation solution to Signal+noise
generator solution. |
| |
|
|
Memoryless
Nonlinearity |
Figure 2: Impairments
Configuration |
|
|
AWGN
(Additive White Gaussian Noise) |
|
|
Frequency
Offset |
|
|
DC Offset |
|
|
I/Q gain
imbalance |
|
|
Quadrature
skew |
|
|
Phase noise
|
|
|
|
|
|
Generate multiple
frames at one shot
To communicate with a device it is required to generate different
kinds of frames such as RTS frames, association requests, and so on.
This process is time consuming and involves delay between frames.
WiLANTA LVSG11bg reduces time and delay by allowing the user to
transmit multiple frames one after the other in just one click. The
frame sequences can be a combination of data, management and control
frames that include sub-frames.
Figure 3: Build Sequence of Frames –
Advanced Settings |
|
|
Visualize your signal
with Graphical capabilities
WiLANTA LVSG11bg supports various graphical features to better
visualize the signal. Change the appearance of the plot by changing
the color, thickness, and style of lines. Markers (horizontal and
vertical) help you to spot coordinate positions and read the signal
values. WiLANTA LVSG11bg provides five different zooming options to
investigate the signal in detail.
 |
|
|
|
IEEE
802.11b/g signal generation solution is available in two versions
|
| |
|
|
WILANTA
LVSG11bg- Real Time Signal Generation Solution |
|
|
WiLANTA IQ
Generator – Creates IEEE 802.11a/b/g compliant signal files |
|
| |
|
|
|
|
Request quote or Information
|
|
|
|
