Reference Manual

Table Of Contents
Product Description 24 (33)
© Ericsson. Commercial in confidence Rev B 2001-05-16 SRN/X-00:146
The CDU-G 900 MHz main characteristics are:
Up to 4 TRX’s 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 TRX’s per cabinet when the hybrids in the dTRU’s are used.
Maximum 6 TRX’s per cabinet when the hybrids in the dTRU’s are not used. The 6
TRX’s 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-TRX’s per CDU by use of a future extra hybrid
combiner on the TX path between the dTRU and the CDU-G.