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Aalborg Universitet Experimental Validation of the Reverberation Effect in Room
| Content Provider | Semantic Scholar |
|---|---|
| Author | Steinböck, Gerhard Pedersen, Troels Fleury, Bernard Henri Wang, Wenguang Raulefs, Ronald |
| Copyright Year | 2015 |
| Abstract | The delay power spectrum is widely used in both communication and localization communities for character izing the temporal dispersion of the radio channel. Experimental investigations of in-room radio environments indicate that the delay power spectrum exhibits an exponentially decaying ta il. This tail can be characterized with Sabine’s or Eyring’s reverberation models, which were initially developed in acousti cs. So far, these models were only fitted to data collected from radi o measurements, but no thorough validation of their prediction ability in electromagnetics has been performed yet. This pa per provides a contribution to fill this gap. We follow Sabine’s original experimental approach, which consists in comparing model predictions to experimental ob servations in a room, while varying its mean absorption coeffici ent and total room surface. We find that Eyring’s model provides a more accurate prediction of the parameters characterizingthe decaying tail, like the reverberation time, than Sabine’s model. We further use the reverberation models to predict the parameters of a recently proposed model of a distance-depen dent delay power spectrum. This model enables us to predict the pa th loss, mean delay and rms delay spread versus transmitter-re c iver distance. We observe good agreement between predictions an d experimental results. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://vbn.aau.dk/files/208327218/journal_final.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
