CommScope ION-U EU H 23/23, Руководство пользователя

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2. Introduction
Page 14 M0200ABA_ION-U_EU_H_23_23 User’s Manual for ION
®
-U
2. Introduction
2.1. Purpose
Mobile telephone and public safety systems transmit signals in two directions
between base transceiver station (BTS) and mobile stations (MS) within the signal
coverage area to carry voice and data traffic.
If weak signal transmissions occur within the coverage area because of indoor
applications, topological conditions or distance from the transmitter, extension of the
transmission range can be achieved by means of an optical distributed antenna
system (DAS).
Office buildings, sports arenas, college campuses, industrial parks, and other areas
of high demand require the specialized capacity boost that an optical DAS can
provide to meet increasing customer demands for voice and data.
An optical DAS contains optical Master Units and a sufficient number of Remote
Units to provide the necessary coverage. The number of the Remote Units depends
on the coverage requirements of the DAS. Extension Units can be connected to
Remote Units to provide coverage for further bands. The Remote Units are
connected to the Master Unit with optical links.
The Master Unit is the connection to the Base Transceiver Stations. The
configuration of a Master Unit depends on the number of the Remote Units and the
frequency range.
2.2. ION-U High Power Remote and Extension Units
The ION-U is an optical fiber based DAS system that efficiently takes the outputs of
multiple Base Transceiver Stations (BTS) sectors and converts those RF signals to
optical to send them over fiber optic cables to Remote Units to provide coverage in
indoor and outdoor locations. The system supports both low power and high power
Remote Units and SISO and MIMO operation.
The ION-U EU H 23/23 is a SISO and MIMO Extension Unit used in conjunction with
a Remote Unit in the ION optical distribution system. This system transports up to
two frequency bands simultaneously (WCS2300 MHz), providing a cost-effective
solution for distributing capacity from one or more base stations.
It has been specifically tested and optimized for UMTS, HSPA+, LTE, and OFDM
modulations. Furthermore it is provisioned for future modulation scheme evolutions.
These Remote and Extension Units feature independent downlink and uplink gain
adjustments and an integrated channel power detector for in-band spectrum and PIM
analysis and end-to-end auto leveling.