High capacity cellular patterns for land mobile radio systems using directional antennas

High capacity cellular patterns for land mobile radio systems using directional antennas

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To meet increasing demand for mobile communications with a fixed spectrum and at reasonable cost, directional antennas have been used in cellular mobile radio systems. This paper reviews sectorised patterns that have been proposed so far, and then describes how to achieve high capacity systems by taking a new approach to the design of cellular patterns. Some novel patterns, with less than or equal to two hexagons per cluster are described. Performances are assessed in terms of the first decile carrier-to-cochannel interference (C/Ic) and traffic density for a given blocking probability. Cell site efficiency is also considered.


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