42 GHz multimedia wireless system - measurement and analysis

Lam, E.B., 2004. 42 GHz multimedia wireless system - measurement and analysis. PhD, Nottingham Trent University.

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Millimetre-wave broadband fixed wireless access systems are particularly suited to meet the growing demand for the provision of cost-effective, high capacity broadcast, data and telecommunication services over the 'last-mile' connection between the service provider and the user's home. In Europe, the allocated spectrum band of 40.5-43.5 GHz for Multimedia Wireless System is envisaged to support the convergence and provision of these services.

The research detailed in this thesis focuses on the investigation and development of relevant hardware and infrastructure necessary to establish long-term, widespread field measurements on a live 42 GHz Multimedia Wireless System.

The 42 GHz campus network experimental test-bed, on which the field measurements are based, is described. This includes an investigation into equipment integration, radio calibration, and provision of digital video and high-speed data network services into the local trial area. In order to facilitate signal measurements, an innovative, low-cost measurement system was developed. Utilising a custom-designed data acquisition module in combination with off-the-shelf satellite set-top boxes and an inexpensive weather station, a system able to monitor and log various parameters of the millimetre-wave signal and meteorological conditions has been developed, and successfully integrated into the field measurement campaign. Novel application of an iterative cumulative sum analysis with associated randomisation test, is shown to successfully mitigate the variation in the long-term local mean level of the measured, received signal power, arising due to system gain variation. This has enabled accuracy to be maintained despite the low cost of the measurement system.

Measured data from the field are statistically analysed within the specific context of long-term precipitation, propagation through foliage and the spatial correlation of precipitation fade. The results obtained and the empirically-drawn conclusions are compared to measurements, predictions and models where available in the literature. These results include the testing of the ITU-R availability prediction model using data from consecutive years and different sites, substantiation of the fade duration model, and the effects of seasonal and weather variation on the millimetre-wave signal as it propagates through foliage.

Item Type: Thesis
Creators: Lam, E.B.
Date: 2004
ISBN: 9781369312775
Divisions: Schools > School of Science and Technology
Record created by: Linda Sullivan
Date Added: 28 Aug 2020 08:42
Last Modified: 08 Jun 2023 08:53
URI: https://irep.ntu.ac.uk/id/eprint/40550

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