Techniques for measurements of transmission characteristics in developing WiMAX applications
David Beltrán, from the Rohde & Schwarz Spain Instrumentation Department.
WiMAX (Worldwide Interoperability for Microwave Access) is based on wireless transmission techniques specified in the IEEE 802.16 standard. The original goal of WiMAX was to create a replacement for broadband cable services, like the various DSL technologies. In addition to WiMAX in the fixed segment (802.16?2004), mobile applications were added in the version of the 802.16e?2005 standard, facilitating full broadband access. The next development step is to create the first applications for WiMAX, with the help of MIMO (multiple input multiple output) technology, which will enable high transfer rates and improved spectral efficiency. On the other hand, MIMO presents new challenges for the test equipment necessary for the development, certification and production of WiMAX MIMO applications.
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