LitePoint Corporation has unveiled its IQmax MIMO system aimed at WiMAX devices with Wave 2 functionality. The mobility adjuncts to the current WiMAX standard (IEEE standard 802.16e-2005) require capabilities beyond those of earlier versions, and this system provides those capabilities. The current WiMAX mobile radio interface uses scalable orthogonal frequency-division multiple access (SOFDMA) and supports multiple-input multiple-output (MIMO) communications technology. This offers benefits such as greater coverage, lower power consumption, and more efficient spectrum and bandwidth utilization.
As it has with previous test solutions, the latest system uses a common-platform approach that covers product development through product QA. The IQmax MIMO solution combines multiple IQmax-500 hardware units with the latest version of IQsignal software. Both have been updated to include the new MIMO requirements.
A basic system includes a pair of IQmax-500s plus a new synchronizing unit along with IQsignal, creating a 2x2 configuration. It can be expanded with up to two more IQmax-500s to implement a 4x4 set up.
Used in conjunction with IQmax MIMO, IQwave for WiMAX software can create arbitrary WiMAX waveforms, which in turn generate actual baseband or RF signals after being loaded into the IQmax's vector signal generator (VSG). IQwave can generate fixed or mobile WiMAX waveforms for both single input/single output (SISO) and MIMO testing.