 or placed inside the chamber. With such a setup, multiple access technolo- gies such as OFDMA or MU-MIMO, including the associated scheduling, can be evaluated and the performance of different scheduling algorithms can be measured. Again, OFDMA and spatial division medium access (SDMA)/MU-MIMO rely on a space- and frequency-selective channel, respectively, which can be provided by the reverberation chamber. Because scheduling algorithms generally also need a channel, which evolves over time, it can be desirable to move the stirrers in the chamber as well as the plat- form during the measurements. This channel evolution over time, however, needs to be sufficiently slow to allow SDMA/MU-MIMO to function. In a chamber of reasonable size, it might be possible to place numerous mobile terminals because © 2009 by Taylor & Francis Group, LLC Measuring Performance of 3GPP LTE Terminals they already experience independent fading, if the distance between them is larger than lambda-half. Measurement setup. For the single-cell measurements, a base station is con- nected to the chamber (or, if it is small, potentially placed inside the chamber). In addition, mobile terminals are added, with spacing between them of at least half a wavelength to ensure independent fading. In the next step, communication is established between the mobile terminals and the base station and throughput measurements of all terminals in parallel are started. Then the platform and stirrers are moved slowly. Depending on the objective of the measurements, a different number of ter- minals may be required. For the investigation of SDMA or MU-MIMO, it can be sufficient to use only two terminals and force them to operate on the same frequen- cy-time resource block SO that they need to be separated in space using MIMO techniques. If, however, scheduling algorithms are to be evaluated, the number of mobile terminals needs to be large in comparison to the number of available frequency-time slots because the quality of a scheduling algorithm shows best at a 