Also commonly referred to as a "Distributed Antenna System," (DAS). The idea with a DAS is to split the transmitted power among several antennas within a building, so as to provide reliable coverage throughout the facility. Using this approach is an energy saver because less power is needed and less power is wasted in overcoming penetration and shadowing losses. Not to mention the signal can be highly focused and transmitted to specific areas that need coverage and signal is not wasted covering areas that don't need coverage.

Several approaches can be implemented into a distributed antenna system, the most basic using a passive system with splitters and feeders. More complex systems utilize active repeaters and amplifiers and may use cutting edge technologies such as lasers and fiber optics to distribute the signal.

This area is one of the fastest growing segments in the communications industry. This is partially due to the fact building regulations and zoning issues have made it more and more costly and difficult to build additional communications towers.

Earthcom has been designing and implementing DAS systems for almost a decade and has installed almost a billion square feet of coverage in that time.