@inproceedings{RademacherJonasKessel2015, author = {Michael Rademacher and Karl Jonas and Markus Kessel}, title = {An Empirical Evaluation of the Received Signal Strength Indicator for fixed outdoor 802.11 links}, series = {Mobilkommunikation - Technologien und Anwendungen. Vortr{\"a}ge der 20. ITG-Fachtagung, 7.-8. Mai 2015 in Osnabr{\"u}ck. ITG-Fachbericht, Bd. 258}, publisher = {VDE Verlag}, address = {Berlin}, isbn = {978-3-8007-3937-0}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:1044-opus-15105}, pages = {62 -- 66}, year = {2015}, abstract = {For the evaluation of the received signal strength indication (RSSI) a different methodology compared to previous publications is introduced in this paper by exploiting a spectral scan feature of recent Qualcomm Atheros WiFi NICs. This method is compared to driver reports and to an industrial grade spectrum analyzer. During the conducted outdoor experiments a decreased scattering of the RSSI compared to previous publications is observed. By applying well-known mathematical tests for normality it is possible to show that the RSSI does not follow a normal distribution in a line-of-sight outdoor environment. The evaluated spectral scan features offers additional possibilities to develop interference classifiers which is an important step for frequency allocation in long-distance 802.11 networks.}, language = {en} }