Reference Manual

Table Of Contents
Description 23 (37)
LRN/X-99:083 Rev F 2001-07-17 © Ericsson. Commercial in confidence
The CDU-G 900 MHz main characteristics are:
Up to 4 TRXs per two antennas (two physical antennas) or one dual polarised.
No limitations on frequency planning.
Required frequency separation is 400 kHz (due to GSM specification).
Synthesiser and base band frequency hopping are supported.
Configurations with and without hybrid combination are possible (with the same HW).
Maximum 12 TRXs per cabinet when the hybrids in the dTRUs are used.
Maximum 6 TRXs per cabinet when the hybrids in the dTRUs are not used. The 6
TRXs will in this configuration occupy the CDU-G capacity.
Covers E-GSM (TX 925-960 MHz, RX 880-915 MHz) including P-GSM (TX 935-960
MHz, RX 890-915 MHz).
CDU-G is prepared to handle 8-TRXs per CDU by use of a future extra hybrid
combiner on the TX path between the dTRUs and the CDU-G.