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armand

Viewing 5 posts - 1 through 5 (of 5 total)
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  • #46296 Reply
    CDU
    Guest

    hi all,
    can anyone give a good explaination of the difference between CDU F and CDU G in Ericsson RBS equipment or what are the advantages of one over the other.Ericsson documentation does not really give a good explaination except it does show different configurations

    #46297 Reply
    Pavel
    Guest

    CDU-G for GSM
    Double capacity combiner – supports up to
    4 TRXs per two antennas or one dual polarised

    With hybrid combining the CDU-G allows base
    band hopping and synthesised frequency hopping.
    The CDU-G is hardware prepared to support EDGE and
    can handle up to 12 TRUs per cell.
    CDU-G is prepared to handle 8 TRXs per CDU by
    use of a future extra hybrid combiner on the path
    between the dTRUs and the CDU-G.
    The CDU-G is primarily designed for RBS 2106 and RBS 2206

    #46298 Reply
    Pavel
    Guest

    CDU-G for GSM 900 MHz
    Main characteristics are:
    • Up to 4 TRXs per two antennas or one dual
    polarised
    • No limitations on frequency planning
    • Required frequency separation is 400 kHz
    • Synthesiser and base frequency hopping are
    supported
    • Configurations with and without hybrid
    combinations are possible
    • 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
    Rx band 880 – 915 MHz
    Tx band 925 – 960 MHz

    #46299 Reply
    Pavel
    Guest

    CDU-G for GSM 1800 MHz
    Main characteristics are:
    • Up to 4 TRXs per two antennas or one dual
    polarised
    • No limitations on frequency planning
    • Required frequency separation is 400 kHz
    • Synthesiser and base frequency hopping
    are supported
    • Configurations with and without hybrid
    combinations are possible
    • 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
    Rx band 1710 – 1785 MHz
    Tx band 1805 – 1880 MHz

    #46300 Reply
    armand
    Guest

    thanks for the info pavel , do u know what curcumstances CDU F is used in ?

Viewing 5 posts - 1 through 5 (of 5 total)
Reply To: armand
Your information:




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