How to Measure EVM of 802.11 WLAN Devices

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UXA Signal Analyzer
+ UXA Signal Analyzer
UXA Signal Analyzer
+ UXA Signal Analyzer

Verifying WLAN device compliance to the latest 802.11 IEEE standards

Testing WLAN device compliance to the latest 802.11 IEEE standards requires support for higher data rates and capacity. The 802.11be standard features 320 MHz transmission bandwidth, 4096-QAM modulation, and enhancements to multiple-input multiple-output (MIMO) with additional spatial streams. The IEEE defines the maximum permitted transmitter constellation error as part of the standard. The maximum error allowed depends on the data rate or constellation size since higher-order constellation requires a tighter modulation accuracy. Therefore, you must meet stringent error vector magnitude (EVM) requirements to achieve greater data capacity.

Measuring an 802.11 WLAN device's EVM requires the use of test equipment with EVM noise floor low enough to measure the true performance of the device-under-test (DUT). You need a signal analyzer with wide analysis bandwidth, deep dynamic range, and low EVM noise floor. Modulation analysis software is required to demodulate and evaluate the EVM of your 802.11 WLAN signals. The solution should be aligned with the IEEE standards and convert the transmitted signals into a stream of complex samples at 160 MHz or more, with sufficient accuracy of I/Q amplitude and phase noise to ensure a low measurement error margin.

WLAN 802.11 EVM measurements solution

WLAN 802.11 EVM measurement solution

Ensuring your WLAN device meets the next-generation IEEE standards requires specific hardware and software bundles. Offering wide analysis and deep dynamic range, the Keysight WLAN 802.11 EVM measurement solution supports EVM measurements to the latest IEEE standards. Featuring the N9042B UXA signal analyzer, the solution delivers up to 11 GHz of analysis bandwidth with a low EVM noise floor. Its' ready-to-use measurement applications and vector signal analysis software help you quickly perform pass/fail tests on your WLAN device. The solution supports the following IEEE standards: 802.11a/b/g/j/p/n/ac/af/ah/ax/be.
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