Providing cellular service along a freeway is a tough job and such a scenario is illustrated in the following. A typical road-width varies from 200 m to 400 m. If you select 1000 m as the radius of each cell, then, you require one cell for each km, while the radius of a conventional normal cell is about 20 km. From the freeway usage point of view, very small segment of each cell is useful. Do you have any suggestions for alternative designs? What are the tradeoffs? Do you suggest the use of SDMA technique?

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Freeway coverage required area Cell