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MIMO signal generator simplifies radio design tests

Posted: 25 Jan 2010 ?? ?Print Version ?Bookmark and Share

Keywords:signal generator? MIMO? radio design?

From VeriWave comes a 3x3 multiple input/multiple output (MIMO) signal generator that cuts test times and overall test costs up to 50-75 percent.

The WaveGen verifies radio accuracy in 3x3 MIMO radios that are making their way into more mobile devices.

WaveGen replaces three individual signal generators, one for each spatial stream, and a separate channel emulator, with one, integrated, test device, thereby reducing equipment costs from $250,000 to $65,000.

By offering an endless variety of waveforms automatically generated by the test hardware, WaveGen also vastly reduces engineering efforts involved in creating I/Q waveforms and manually synchronizing them, saving countless hours spent by DSP engineers.

"With 3x3 MIMO now being deployed on Access Points and making its way into mobile devices, making it simpler and less costly to test allows chip and device manufacturers to quickly verify their designs, avoiding costly radio re-designs," said Eran Karoly, VeriWave's VP of Marketing.

According to Karoly, before WaveGen, the only way to test 3x3 MIMO radios was to stitch together three individual signal generators, one for each spatial stream.

These signal-generating devices would have to be synchronized to create a 3x3 signal using complex and expensive hardware and software with I/Q waveforms would have to be created by DSP engineers. After each test run, new I/Q files have to be created.

With WaveGen, complete MIMO signals are generated by a single VeriWave hardware blade and are automatically synchronized using the WaveGen software.

Karoly also claimed WaveGen to be the first to integrate channel emulation, the process of subjecting the signal to real-world traffic conditions by emulating environments like hallways, office buildings and the outdoors.

Next week, VeriWave is introducing WaveInsite, which allows interoperability over the air testing of Wi-Fi devices and infrastructures. WaveInsite pricing starts at $9,995.

WaveGen 3x3 MIMO prices begin at $65,000.

- Nicolas Mokhoff
EE Times

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