ation of Measurements in Reverberation Chambers 12.1.4 Chapter Outline Basic Properties of Reverberation Chambers 12.2.1 Basic Measurements-Reflection and Transmission Coefficients 12.2.2 Transmission Level and Calibration 12.2.3 Accuracy and Number of Independent Samples 12.2.4 Research Activities on Reverberation Chambers 12.2.5 Benchmarking of Reverberation with Anechoic Chambers C 2009 by Taylor & Francis Group, LLC Long Term Evolution: 3GPP LTE Radio and Cellular Technology Calibration of the Reverberation Chamber 12.3.1 Measurement of Antenna Efficiency 12.3.2 Measurement of Total Radiated Power 12.3.3 Measurement of Total Isotropic Sensitivity 12.3.4 Measurement of Average Fading Sensitivity 12.3.5 Measuring Antenna Diversity Gain 12.3.6 Measuring MIMO Capacity 12.3.7 Measuring System Throughput New Tests for LTE-and-Beyond Systems in the Reverberation Chamber 12.4.1 Link-Level Measurements 12.4.2 Single-Cell System-Level Measurements 12.4.3 Multicell System-Level Measurements 12.5 Summary References Introduction Multipath fading has for many years been a problem for mobile communication engineers, to be overcome by designing systems that have sufficient signal-to-noise ratio (SNR) or signal-to-interference ratio (SIR) margins. The fading is caused by multiple reflections in walls and ceilings (indoors) or cars and buildings (outdoors) that add constructively or destructively at the location of the terminal or base sta- tion antennas. The global system for mobile communications (GSM) and third generation (3G) both require fading margins of 20-30 dB to provide good voice quality at most locations in the cell [1]. The 3rd Generation Partnership Project (3GPP) long term evolution (LTE) and, to some extent, evolved HSPA (high-speed packet access) and WiMAX (worldwide interoperability for microwave access) will use a completely different approach to multipath fading. Instead of being some- thing to be combated to provide robust voice communication everywhere in the cell, the fading conditions will be used to in