Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

Anchor
A9.2.3
A9.2.3
This is the case for GSM, with regards to the 2 first adjacent channels.

In ETSI 3GPP TS 145 00545 005, Table 6.3-1 in section 6.3, protection ratios are specified in dB for a desensitization Ddesensitisation DSTANDARD of 20 dB (see section 6.1).

  • Co-channel, [C/Ic]dB[1]  = C - Ic = 9 dB
  • First adjacent channel, [C/Ia1]dB7  = C - Ia1 = -9 dB
  • Second adjacent channel, [C/Ia2]dB7= C - Ia2 = -41 dB

These are the “blocking protection ratios”.

...

IOOB-TARGET = N + I/NTARGET + (C - Ic) - (C - Ia)                                                                               (Eq. 138)

...