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|Title: ||Studying the Impact of the Environment on Radio Frequency Signal Quality: A Case Study of KNUST Wireless Local Area Network|
|Authors: ||Ngala, Daniel Kuyoli|
|Issue Date: ||14-Mar-2012|
|Abstract: ||With the expansion of WLAN, and the proliferation of handheld mobile devices such as PDA, cell phones, laptops, etc there is growing interest in optimizing the WLAN infrastructure so as to increase productivity and efficiency in the various campuses, airports, hotels and other areas where access points (APs) are mostly found. This is achieved by effectively deploying APs to provide adequate signal coverage also to minimize co-channel interference and coverage overlap.
This study was conducted on the campus of Kwame Nkrumah University of Science and Technology, where received signal strength indicator (RSSI) measurements were collected from some selected APs on the campus in LOS and NLOS environment scenarios. Path loss exponents, standard deviation and root mean square error were determined for these environments scenarios using least-square regression analysis. The results were compared with those of other published results and showed good agreement. Empirical models (prediction) were derived for LOS and NLOS environments and validated by comparing them with some existing models such as COST231 Hata, Stanford University Interim and Free Space Loss model. The results from the comparison were found to be satisfactory indicating that the derived models can be used for effective deployment of wireless networks at KNUST.
Index Terms- NLOS, LOS, RSSI, Path loss exponents, environment scenario, WLAN|
|Description: ||Thesis submitted to the School of Graduate Studies, Kwame Nkrumah University of Science and Technology, Kumasi, in partial fulfilment of the requirements for the Degree of Master of Science in Telecommunications Engineering, May-2012|
|Appears in Collections:||College of Engineering|
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