It is available free from Aeroflex on the company's web site. WiMAX 802.16 Modulation IQCreator 8.3 further extends the capabilities of this versatile waveform creation tool for use with the 3410 series and the 3000 series PXI Digital RF Signal Generators. For WiMAX, IQCreator enhances the capabilities of Aeroflex digital signal generators to provide signals suitable for supporting both IEEE 802.16 (2004) OFDM (Orthogonal Frequency Division Multiplex) and IEEE802.16 (2005) OFDMA (Orthogonal Frequency Division Multiple Access). Users can create arbitrary waveforms representing both WiMAX uplink and downlinks in both FDD (Frequency Domain Duplex) as well as the TDD (Time Domain Duplex) systems. An intuitive user interface is provided to allow selection of the fundamental settings according to the 802.16 specifications.