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Signal Losses of Outdoor-Indoor Wave Propagation Paths - Signal Fading through Modern Window Systems

Paperback - 10 September 2007
Knauer, Nils (Author)
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Description

Since the introduction of sending and receiving emails or watching TV with mobiles en route, modern wireless broadcasting services require high data rates. However, increasing the information flow-rate requires that the operating frequency is also increased. This gives rise to problems with providing good and constant signal strength to ensure that end user does not notice any interruptions. Previous investigations have detected that a significant signal propagation path, the outdoor-indoor path, can be enormously disturbed. From a technical point of view, the wave propagation through building openings, a window for example, should be unproblematic. But new windowpane systems consisting of metallic layers strongly affect the propagation path. Hence, it is unsure whether high frequency broadcasting systems can cover in-building environments. This book describes the theoretical and mathematical basics of wave propagation and presents realistic measurement series, revealing the expecting signal losses for already existing and future broadcasting services.

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