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MIMO OTA Handset Performance and Testing
Agilent in LTE & Wireless - Webcast Series 2013
Title: MIMO Over the Air (OTA) Handset Performance and Testing
Date: June 27, 2013
Moray Rumney, Lead Technologist, Agilent Technologies
The majority of mobile phone radio testing is carried out using conducted methods that bypass the device antenna. This did not used to be a big issue, but with the ever-increasing pressure for reduced handset size coupled with the demand for multi-band and MIMO capabilities, the design of the antennas is becoming increasingly difficult which may lead to a loss of performance in the network. In recent years radiated "over the air" performance requirements and tests have been developed for single antenna (SISO) devices which have gone a long way to improve and ensure the quality of devices in the field as perceived by the end user. However, these SISO performance requirements and tests do not scale up to receive diversity and MIMO operation. In order to fully test a mobile phone with multiple receive antennas requires the creation of a spatially diverse radio environment. This is a substantially more complex environment than was necessary for SISO OTA testing and the industry has been investigating how to solve this problem since 2009. There are currently a number of proposals within CTIA and 3GPP for how to create the radio environment necessary to measure MIMO performance in realistic radio environments. This webcast will summarize the current test methods and results from the latest inter-lab / inter-technique test campaign being carried out by CTIA with a look towards the remaining work prior to release of new standards.
Engineers and managers concerned with the design and validation of radiated mobile phone receiver testing. This will include operators, device manufacturers, antenna designers and test houses.
Moray Rumney joined Hewlett-Packard/Agilent Technologies in 1984, after completing a BSc in Electronics from Edinburgh's Heriot-Watt University. Since then, Moray's main work has been the development and system design of base station emulators used in the development and testing of cellular phones. Moray joined ETSI in 1991 and 3GPP in 1999 where he was a significant contributor to the development of type approval tests for GSM and UMTS. He currently represents Agilent at 3GPP RAN WG4, where the air interface for HSPA+ and LTE Advanced is being developed. Moray's current focus is on MIMO "over-the-air" test methods. Moray has published many technical articles in the field of cellular communications and is a regular speaker and chairman at industry conferences. He was editor of Agilent's book "LTE and the Evolution to 4G Wireless" whose second edition was published in February 2013. Moray is a member of IET and a chartered engineer.