Brand Name NOKIA Model Number FHEA Type RRU Use BTS Flexi Remote Radio Head FHEA Flexi Remote Radio Head NOKIA FHEA 472168A Remote Radio Head is a *-branch MCPA unit optimized for single sector usage with *-way diversity. It consists of two individual branches to transmit and receive Multicarrier signals of multiple radio technologies concurrently. Each branch contains the transmitter and receiver chains and front end filters. Each branch contains one receiver chain in the RRH. The front end filters are fixed filters covering the whole band. FHxA contains inte-grated antenna line supervision. Similar to a RF module, RRH contains the necessary common functionality like digital and control circuitry, OBSAI interface and the needed DC/DC power conversion. RRH uses natural convection cooling, i.e. it does not have cooling fans. There is a common baseband part for the transceivers within the system modules. The following is the list of interfaces in FHxA: *8 VDC External Alarm Interface Optical OBSAI RP**1 Interface Duplexed Antenna interfaces RET interface, AISG 2.0 Antenna tilt support The following is the list of features supported by FHxA: Two Transceivers to support 2 TX MIMO *0 + *0 W output power at antenna connectors Two Linear Power Amplifiers Two RF filters for TX/RX
