Abstract
In this paper, we present drive test results for mobile WiMAX system for desert and cosmopolitan terrains where there are few studies reported in the literature. The extensive measurement is performed in the framework of the physical performance of the WiMAX technology which is often considered as a 4G system. Path loss model is fitted for the collected data. The work is unique in the sense that most empirical channel models are produced in regions where the environments (weather, buildings, vegetation, among others) are quite different from the desert terrains that are considered in this study. We also show that shadowing is truly lognormal in dB and the standard deviation values are calculated for the desert terrain from the measurement data. The measurements are collected using WiMAX BS station, with greenpacket dongle, and NEMO versatile outdoor drive test equipment to evaluate and characterize the performance of the system. The received signal strength indicators measured, are analyzed to complement network design and network optimization for regions where the popular models may not be accurate.
Highlights
Worldwide Interoperability for Microwave-Access (WiMAX) has emerged as wireless access technology that is capable of providing fixed and mobile broadband connectivity
We present drive test results for mobile WiMAX system for desert and cosmopolitan terrains where there are few studies reported in the literature
We show that shadowing is truly lognormal in dB and the standard deviation values are calculated for the desert terrain from the measurement data
Summary
Worldwide Interoperability for Microwave-Access (WiMAX) has emerged as wireless access technology that is capable of providing fixed and mobile broadband connectivity. A closely related study is reported in [6] for GSM network, where it is argued that the Okumura-Hata propagation model is not fully suitable for the desert, dry Oman terrains since there is no much rain in Oman. Among the benefits of our effort for accurate propagation model for desert environment is to assist network operators not to over- or under-engineer their networks, which is not a cost-effective way of managing link budget. For the design of power-efficient networks it is essential that every fraction of decibel (energy) is utilized effectively through adoption of the most suitable model in link budget This power consciousness is a valuable effort towards reducing power consumption which has both positive environmental and cost impacts. Collection of measurement data was performed using WiMAX BS and communications towers with antennas at a height of 17 meters.
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