As cellular mobile networks continue to expand, operators keep trying to find cost-effective ways to improve network performance. Tower loading, site access restrictions, or concerns with radio failures can in many instances restrict the installation of RRH at the top of the tower. Hence, the older generic site installation practice of using an RF feeder to go from the antenna to the base transceiver station (BTS) is still used in many applications. This scenario does introduce the potential need for tower mounted amplifiers that can provide increased capacity and better coverage.
