Cellular performance bounds via shotgun cellular systems

摘要

This paper considers two-dimensional interference-limited cellularnradio systems. It introduces the shotgun cellular system that placesnbase stations randomly and assigns channels randomly. Such systems arenshown to provide lower bounds to cellular performance that are easy toncompute, independent of shadow fading, and apply to a number of designnscenarios. Traditional hexagonal systems provide an upper performancenbound. The difference between upper and lower bounds is small undernoperating conditions typical in modern TDMA and CDMA cellular systems.nFurthermore, in the strong shadow fading limit, the bounds converge. Tongive insights into the design of practical systems, several variationsnare explored including mobile access methods, sectorizing, channelnassignments, and placement with deviations. Together these resultsnindicate cellular performance is very robust and little is lost innmaking rapid minimally planned deployments