Features & Benefits
RSALTE: LitePoint IQsignal™ LTE
Software for Tektronix RSA3000 Series and RSA6000 Series Spectrum
Analyzers
- Support for LTE Release December 2008
- 3GPP TS 36.211 – Version 8.5.0
- 3GPP TS 36.212
– Version 8.5.0
- 3GPP TS 36.213 – Version 8.5.0
- Software Suite for 3GPP LTE Downlink (OFDMA) and Uplink (SC-FDMA)
Signal Snalysis
- Quickly Detect, Diagnose, and Resolve LTE
Design Errors
- Easy-to-Use Graphical User Interface, Running
inside the RSA6000 Series or on Standalone PC
- Supports RSA3000
Series and RSA6000 Series Spectrum Analyzers
- Automate Measurements
for System Troubleshooting and Device Stress Testing
Applications
- Component and System R&D
- Product Development
- Design Verification
- Product
Debugging
Discover,
Trigger, Capture, Analyze
RSALTE provides spectrum and modulation
measurements on downlink (OFDMA) and uplink (SC-FDMA) signals in accordance
with standard 3rd Generation Partnership Project (3GPP).
The Tektronix spectrum analyzer discovers and captures intermittent
events that other solutions miss, enabling engineering teams to detect,
diagnose, and resolve design errors more quickly.
The revolutionary
DPX® spectrum display offers an intuitive live-color view
of signal transients changing over time in the frequency domain, giving
you immediate confidence in the stability of your design or instantly
displaying a fault when it occurs. This live display of transients
is impossible with other signal analyzers. Once a problem is discovered
with DPX, the spectrum analyzer can be set to trigger on the event
in the frequency domain, capture a continuous time record of changing
RF events and perform time-correlated analysis in all domains. You
get the functionality of a high-performance vector signal analyzer,
a traditional spectrum analyzer, and the unique discover-trigger-capture-analyze
capability of a Real-time Spectrum Analyzer – all in a single package.
The combination of an RSA6000 Series or RSA3000 Series spectrum
analyzer and RSALTE demodulation software enables you to perform the
much-needed time, frequency, and modulation domain measurements to
decompose signals and uncover anomalies, and generate in-depth analysis
for troubleshooting LTE devices in the design stage.
Description
RSALTE offers advanced analysis of LTE waveforms captured by
the RSA Series, including EVM and spectral measurements. For example,
RSALTE can easily analyze frequency-settling time and phase errors
that occur during a burst transmission. Such capabilities significantly
help in understanding and debugging RF performance-related issues.
A PC is used to run the RSALTE analysis software and control the RSA
Series through either a 10/100Base-T Ethernet or IEEE 488.2 GPIB connection.
The software's application programming interface allows users to automate
measurements to characterize system and device performance. RSALTE
software supports Tektronix .IQT and .TIQ file formats, and LitePoint
.SIG and .MOD formats.
RSALTE software supports in-band
transmit analysis through a graphical display of the following tests:
- Spectrum (PSD) and Mask
- Symbol Constellation
- Spectral Flatness and Delta Spectral Flatness
- Captured
Waveform Display in the Time Domain
To support
product debugging, various other graphical displays are supported
by RSALTE, including:
- Phase Error versus Time
- Frequency Error versus Time
- CCDF (for Support Compression
Analysis)
- Spectrogram
- EVM (versus OFDM Subcarriers
and versus Time)
Besides the graphical display
of measurements, RSALTE also presents relevant numerical data including:
- EVM (All, Data, Pilots, Unmodulated)
- Power (Peak,
Average)
- Frequency Error
- Symbol Timing Error
- Integrated Phase Noise
- I/Q Imbalance (Amplitude, Phase)
- Average of Numerical Data over Multiple Captures Can Also be
Displayed
RSALTE additionally provides a wide
range of compensation methods that can be used for advanced analysis
of a captured signal’s sensitivity to certain impairments. For example,
the available compensation methods when analyzing OFDM signals include:
- Phase Tracking (Off, Fast)
- Channel Estimation
(Based on Averaging of the Long Training Sequence, Averaging of the
Full Packet)
- Symbol Timing Tracking
- Frequency Synchronization
(Based on Long Training Sequence or Full Packet)
- Amplitude
Tracking
The RSALTE software will auto-detect the resource
allocation maps in the uplink and downlink further simplifying signal
analysis. The maptool allows you to configure the LTE map such that
the signal can be properly decoded. Traditionally, a map is automatically
generated from data that is contained in the downlink control channel.
With the maptool, you can view the map and also create/modify the
map if nonstandard schemes are used. The maptool provides both symbol
number and slot number views giving you more flexibility in how the
data is displayed.
Downlink Map
Uplink Map
