RSA-IQWIMAX Software for Tektronix Real-Time Spectrum Analyzers

RSA-IQWIMAX, LitePoint IQsignal™ Software for Tektronix, enables PC-based analysis of signals captured with the Tektronix Real-Time Spectrum Analyzers. The software provides detailed analysis of 802.16e-2005 / WirelessMAN-OFDMA and 802.16-2004 / WirelessMAN-OFDM PHY waveforms.

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Application Areas

• Component and System R&D
• Product Development
• Design Verification
• Product Debugging

Features

• Software suite for WiMAX 802.16e-2005 / WirelessMAN-OFDMA and 802.16-2004 / WirelessMAN-OFDM signal analysis
  Easy to use graphical user interface, running on standard PC
• Signal analysis methodology compatible with LitePoint IQmax Wireless Test System and Tektronix Real-Time Spectrum Analyzer for consistent results between instrument platforms.

The IQsignal for WiMAX analysis screen

RSA-IQWIMAX Software for Tektronix Real-Time Spectrum Analyzer  DataSheet 

Software Description

IQsignal for WiMAX offers advanced analysis of WiMAX waveforms captured by the Tektronix Real-Time Spectrum Analyzer or retrieved from file, including EVM and spectral measurements. For example, IQsignal for WiMAX can easily analyze frequency settling time and phase error that occurs during a burst transmission. Such capabilities significantly help in understanding and debugging RF performance-related issues.

The IQsignal for WiMAX software supports in-band transmit analysis through a graphical display of these tests including:

• Spectrum (PSD) and mask
• symbol constellation
• spectral flatness, delta spectral flatness
• captured waveform display in the time domain

To support product debugging, various other graphical displays are supported by IQsignal for WiMAX, including:

• phase error versus time
• frequency error versus time
• CCDF (to support compression analysis)
• spectrogram
• EVM (versus OFDM subcarriers; versus time)

Besides the graphical display of VSA measurements, IQsignal for WiMAX also presents relevant numerical data including:

• EVM (all, data, pilots)
• power (peak, average)
• frequency error
• symbol timing error
• integrated phase noise
• I/Q imbalance (amplitude, phase)
• Reed-Solomon errors

Average of numerical data over multiple captures can be displayed as well. 

IQsignal for WiMAX 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