TY - JOUR 
A1 - Sánchez Heredia, Juan Diego
AU - Grudén, Mathias
AU - Valenzuela Valdés, Juan Francisco
AU - Sánchez Hernández, David Agapito
T1 - Sample selection method for arbitrary fading emulation using mode-stirred chambers
Y1 - 2010
SN - 1536-1225
UR - http://hdl.handle.net/10317/1257
AB - Mode-stirred chambers (MSC) consist on one or more resonant cavities coupled in some way in order to allow the measurement of different antenna parameters such as antenna efficiency, correlation, diversity gain or MIMO capacity, among others. In a single-cavity mode-stirred chamber, also known as a reverberation chamber (RC), the environment is isotropic and the amplitude of the signal is Rayleigh distributed. Real environments, however, rarely follow an isotropic Rayleigh-fading scenario. Previous results have shown that a Rician-fading emulation can be obtained via hardware modification using an RC. The different methods lack from an accurate emulation performance and are strongly dependent upon chamber size and antenna configurations. With the innate complexity of more-than-one cavity MSC, the coupling structure generates sample sets which are complex enough so as to contain different clusters with diverse fading characteristics. This paper presents a novel method to accurately emulate a more realistic Rician-fading distribution from a Rayleigh-fading distribution by selecting parts of the sample set that forms different statistical ensembles using a complex two-cavity multi-iris-coupled MSC. Sample selection is performed using a genetic algorithm. Results demonstrate the potential of MSCs for versatile MIMO fading emulation and OTA testing. The method is patent protected by EMITE Ing.
KW - Teoría de la Señal y las Comunicaciones
KW - Modo-se movió la cámara
KW - Diversidad de ganancia
KW - Capacidad MIMO
KW - Mode stirred chamber
KW - Diversity gain
KW - MIMO capacity
LA - eng
PB - IEEE Antennas and Propagation Society
ER -