Cost-efficient benchmarking of wireless devices over-the-air (OTA)
In Over-The-Air (OTA) performance testing, a wireless device is tested without any cables connected to the device under test. This enables performance testing of an entire wireless design, eliminates any interference caused by test cables and omits the need for modifying the planned design for testing purposes.
Enhanced mobile capacity driven by MIMO performance is partially dependent on the antenna design. Testing the MIMO antenna design of a wireless device over-the-air is the optimal way of verifying the antenna performance. A properly developed and tested MIMO feature in a wireless device leads to greater throughput and ultimately drives end-user satisfaction.
The OTA performance test system using Propsim channel emulator is scalable from a single cluster to full 3D.
OTA testing in anechoic chamber with Propsim
Over-the-air testing in an anechoic chamber with Propsim channel emulator creates realistic and controllable radio channel environment around the wireless device. Anite’s Propsim channel emulators enable the creation of 3GPP defined channel models – SCME UMa and SCME UMi – leading to the accurate evaluation of a wireless device. A wide range of wireless devices such as smart phones, tablets, and laptops can be evaluated in a fully repeatable and realistic network environment so that all critical parts of the design are simultaneously tested, including antennas, RF front end and baseband processing.
Propsim F32 is ideally suited for OTA testing in an anechoic chamber thanks to its high RF I/O capacity, compact size, ease of use and configurability. A single Propsim F32 emulator can support a configuration of 8 or 16 dual polarized antennas that create a multi-probe environment around the device under test.
OTA testing in reverberation chamber with Propsim
Over-the-air testing in a reverberation chamber with Propsim channel emulator enables assessment of a device’s average data throughput performance relative to other devices under isotropic SCME based channel models.
Propsim FS8 is an ideal product for OTA testing in a reverberation chamber testing because it enables you to control critical parameters like dynamic mobile speed, multipath profile, range delay and base station antenna correlation, noise interference and inter-symbol interference caused by base station signal and distant propagation path reflections to device.
OTA testing with two-stage method
Two-stage Over-the-air testing capability uses SISO OTA anechoic chambers and thus requires only minor changes on existing test system. The testing starts with measurement of radiated antenna patterns of a device under test in an anechoic chamber followed by throughput measurements performed with the Propsim radio channel emulator using a selected channel model. The device under test must support this testing method and provide device specific data for radiated antenna pattern measurement.
Propsim FS8 channel emulator enables you to import and embed the measured antenna patterns into the SCME channel models and therefore test with realistic radio channel model. The Propsim FS8 with 2 channels is optimal and affordable choice for the two-stage method. As the Propsim emulator supports several different radio channel models, it extends the use of the basic two-stage method to test different technologies.
Propsim® OTA Testing Tools product sheet (883 KB)
Contact Anite to learn more.