Acoustical Modeling of Reverberation Chambers

Reverberation chambers – design and application for EMC

Reverberation chambers are a promising EMC test environment which has several advantages. The set-up and design of reverberation chambers are discussed in the first part of the paper. The second part deals with their application for EMC. Several performance and comparison tests are presented and discussed which show a good reliability and reproducibility of the reverberation chamber as a test e...

Overview of LTE MIMO OTA Throughput Testing in Reverberation Chambers

It is not possible to do direct tests to find the best LTE multi-antenna configuration for optimizing antenna diversity gain, antenna MIMO capacity or device throughput with the traditional antenna measurement method, i.e. an anechoic chamber. Of the two alternatives for making direct measurements, i.e. drive tests and the reverberation chamber, the reverberation chamber offers many advantages....

Experimental demonstration of directive pulsed wavefront generation in reverberation chambers

Plane Wave Integral Representation for Fields in Reverberation Chambers

A plane wave integral representation is presented for well-stirred fields in a reverberation chamber. The representation automatically satisfies Maxwell’s equations in a source-free region and the statistical properties of the fields are introduced through the angular spectrum, which is taken to be a random variable. Starting with fairly simple and physically appropriate assumptions for the ang...

Hybrid Connectionist-structural Acoustical Modeling

In this paper, we introduce several hybrid connectionist-structural acoustic models for context-independent phone-like units. The structural part has been modeled with Markov chains or nite state networks learned by grammatical inference techniques. A multilayer perceptron or a committee of multilayer perceptrons is used to estimate the emission probabilities of the structural models. We compar...