Making Custom OFDM Measurements Using the Keysight 89600 VSA Software with Option BHF

PublishTime：2022-04-29

●This application note describes how to configure the Keysight Technologies Inc. 89600 VSA software with Option BHF custom OFDM modulation analysis to analyze and troubleshoot new, custom, proprietary, generic, or non-standard OFDM signals. Example files are developed and are available for further examination in the 89600 VSA software’s demo signal library and Help text. The only hardware required for demonstration is a PC.
●OFDM (Orthogonal Frequency-Division Multiplexing) signals have gained great acceptance in communications systems due to their inherent noise immunity and transmission efficiency. But trouble-shooting and analyzing these systems, particularly for new, custom, generic, or non-standard OFDM formats, is difficult. The 89600 VSA software software with Option BHF custom OFDM modulation analy-sis provides many data traces and tables to help the OFDM designer, including those developing multi-user or MIMO systems.
Multi-carrier modulation schemes, such as OFDM, represent significant challenges for those seeking to verify PHY-layer characteristics. Most OFDM signals are designed to an open commercial standard, and so are the tools that test them. While traditional spectrum analysis can measure simpler parameters such as frequency, power level, and spectral mask, the more in-depth quality measurements require special capabilities found only in vector signal analysis tools flexible enough to work with custom OFDM systems.
The 89600 VSA software with Option BHF custom OFDM modulation analysis provides an easy-to-use, text file-driven approach to describing generic and proprietary OFDM signals requiring that no special software be developed.
Once the custom OFDM signal is properly described, the 89600 VSA software’s troubleshooting capability can be brought to bear on it, including displaying error traces, such as EVM by time or frequency, IQ constellations, tabular data such as OFDM data burst info displaying EVM, power, modulation format, and resource units assigned for preamble pilot, and data subcarriers. Error summary information per channel provides information on EVM (pilot, data, and preamble EVM), frequency, symbol clock, and common pilot errors, as well as IQ errors such as offset, quadrature errors, gain imbalance and time skew.
Statistical information such as CCDF and CDF traces is also avail-able on these signals, even before demodulation begins. In addition, the 89600 VSA software can operate with data taken from over 30 supported waveform acquisition platforms, including simulation software, logic analyzers, oscilloscopes, and signal analyzers. This allows you to examine your custom OFDM signals anywhere in your block diagram. Automate design verification tests using SCPI or any supported .NET language.

Brand of Product：	Keysight
Part#：	89600 、 89600VSA More Part#
Product Category：	VSA software More
Application：	More
Data Type：	Application note & Design Guide More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	December 1, 2017
Version Number：
Data Encoding：	5990-6824EN
Data Size：	1.6 MB

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