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Radio channel emulator debuts

Posted: 03 Oct 2008     Print Version  Bookmark and Share

Keywords:radio channel emulator  basestation  WiMax  LTE 

Elektrobit Corp. has rolled out what it touts as the industry's first radio channel emulator aimed at manufacturers of basestations and subscriber devices using WiMax, LTE and other 4G wireless network standards.

"Radio channel emulators allow the designer of a handset, basestation, chip set or other carrier equipment to test user terminals or network elements using a real-world radio channel—complete with interference, noise and channel fading," claimed Jouni Saastamoinen, director of business development for wireless communication tools at Elektrobit.

OEMs "testing new wireless devices for WiMax and LTE needed an emulator that can simulate these and other new 4G technologies, which have to co-exist with the current [wireless] technologies," Saastamoinen added.

Radio channel emulators create the environment and how it will look when user terminals are communicating with basestations. All common channel attributes are simulated, such as multi-path interference and signal fading as subscribers move relative to stationary basestation transmitters.

"We emulate all the real-world situations in a lab environment so OEMs can test their devices under real field conditions, including multi-path fading caused by artifacts and reflections as subscribers move in cars or commuter trains at up to 350 kilometers per hours (217 miles per hour)," said Antti Sivula, Elektrobit's senior vice president for wireless communications tools. "We emulate all the existing wireless standards, including satellite links to space and all the emerging 4G technologies for high-end research and development."

The company's Propsim F8 radio channel emulator is said to handle bandwidths of up to 125 MHz with the use of smart antennas for multiple-input, multiple-output capabilities. It also provides two to eight physical channels which can be divided into four to 32 logical channels.

The emulator also supports 3GPP/3GPP2 WCDMA, GSM, TD-SCDMA, EV-DO / CDMA2000, 3GPP LTE, WiMax, Wi-Fi and future wireless system air interfaces as they emerge, the company said.

- R. Colin Johnson
EE Times

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