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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.
Additional resources for WLAN 802.11 EVM measurements
Base station signal analysis based on the 5G release 16 standards, requires a high-frequency and wide-bandwidth test set up that is able to reduce excessive path loss, wideband noise, and frequency errors. Learn how to perform base station transmitter conformance testing according to the 5G new radio (NR) release 16 standards, for your frequency range 1 (FR1) and FR2 applications.
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Measuring 5G private network base station transmitter signal quality requires a high-frequency and wide-bandwidth test system that can address excessive path loss, wideband noise, and frequency errors with minimum impact on the EVM test results. Learn how to measure accurate signal quality in your 5G private network base station transmitters for your 5G new radio (NR) frequency range 1 (FR1) and FR2 applications.
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Measuring RF and microwave frequency phase noise requires a dedicated phase noise instrument. Learn how to deploy three techniques to measure RF phase noise: direct spectrum, phase detector, and two-channel cross-correlation.
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