RRU is a remote radio unit. One or more RRU constitute the radio frequency (RF) part of a distributed base station. RRU can be installed on a pole, wall, or stand. It can also be installed close to antennas to shorten the feeder length, reduce feeder loss, and improve system coverage. RRU provide the functions such as modulate and demodulate baseband signals and RF signals, process data, amplify power and detect standing waves
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