 together for many years to develop and gradually improve the reverberation chamber technology. Today, Bluetest has three products © 2009 by Taylor & Francis Group, LLC Long Term Evolution: 3GPP LTE Radio and Cellular Technology Future terminal situation. Nov.99 Figure 12.1 Per-Simon Kildal's vision in 1999. in its portfolio: a small standard chamber suitable for antenna efficiency and total radiated power (TRP); a high-performance chamber with very high isolation (100 dB), which also is suitable for receiver sensitivity (TIS) and throughput measure- ments; and tailor-made mode stirrers to fit any size existing shielded room. Although some companies, institutes, and universities have developed reverberation cham- bers and software for measuring wireless devices with small antennas, by late-2008, Bluetest was the only company that commercially provided reverberation chambers and software for measuring antenna efficiency, TRP, TIS, and throughput. Bluetest's customers can be found in Asia, Europe, and North and South America, and they are a mixture of mobile phone developers/manufacturers, mobile operators, companies that develop small antennas, test institutes, and universities. Eight of the world's largest mobile phone manufacturers, as well as two of the world's largest mobile phone operators are among the customers. With the increas- ing interest in this technology, it is likely that that competing companies will soon C 2009 by Taylor & Francis Group, LLC Measuring Performance of 3GPP LTE Terminals be supplying similar solutions. It is our belief that, in a few years, reverberation chambers will be the preferred test method for fast development and evaluation of wireless devices with small antennas. 12.1.3 Standardization of Measurements in Reverberation Chambers One of the first organizations to use measurements in reverberation chambers for their quality standard of mobile phones TCO '01 was TCO Development [10]. They regularly publish TCP (telephone communication power) measurements of mobile phones made in 