Realease 7 of 3GPP has been designed as an upgrade for existing HSPA networks and is called HSPA+. The release 7 of 3GPP introduces MIMO (Multiple Input,Multiple Output) dan 64QAM to increase data rate of the air interface. 3GPP is now developing the standards for new mobile network, called Long Term Evolution (LTE) and system Architecture Evolution (SAE) for next generation mobile networks, this is next step in the continuous move to wider bandwidth an higher data rates.

LTE is a new technology, and the specifications are still evolving, a close working relationship between the test equipment,wireless device and chipset designers is required to synchronize feature implementation, reference specifications and timely delivery of the test equipment software.

For analyzing MIMO and LTE signals, signal analyzers enable detailed testing of the physical layer. The signal analyzers can be equipped with option for LTE and MIMO allowing simultaneous processing of signals transmmited by multiple antennas. They can also be used to determine whether pre-coding for LTE signals works across the different stages.

To ensure this technology's optimal operation requires the engineer to accurately test the MIMO receiver a challenging task given the large combination of variables the must be tested in a given MIMO configuration A critical part of testing a MIMO receiver is replicating real-world conditions and channels and performing real-time fading of MIMO signals.