administrations. Attachment 2 contains the calculation methodology used for deriving the additional margin. Reasons: WRC-03 amended item C.8.e.1 of Annex 2 of Appendix 4 and defined it as the greater of either the carrier-to-noise ratio, required to meet the performance of the link under clear-sky conditions or the the necessary margins. In ratio, required to meet the short-time objectives of the link inclusive of the French text a comma exists before of necessary margins”. Therefore, the submitted “inclusive value of the C/N objective should include all necessary margins. to WRC-03, no indication of an inclusion of any additional margin into the C/N objective existed in the Radio Regulations. Therefore, the calculation methodology in Attachment 2 is used to define an additional margin to be added to the noise of the C/N objective to identify the C/I required to calculate the probability of causing harmful interference to frequency assignments of the networks received before 1 January 2005. Effective date of application of the Rule: immediately approval. NOC 3.1 Interfering cases MOD 3.2 Margin algorithms M, C/I, C/N The algorithms described in Attachment 1 shall be used to evaluate compliance with the mutually accepted interference criteria or with the single entry limits established in Table 2. Table 2 provided below takes into account the information submitted to the Bureau by administrations in accordance with Appendix 4 and the carrier type definition in § 3.1 above and is a simplification of Table 2 of Recommendation ITUR S.7412. 2 Single entry interference (SEI) protection criteria Interfering carrier Analogue type Analogue (TV-FM) or other Digital (other than TV-FM) Desired carrier type Analogue (TVFM) + 14 (dB) C/Ntot Digital If DeNeBd InEqBd then + 9.4 + 3.5 log (δ) 6 log (i/10) (dB) C/Ntot – (i.e. + 5.5 + 3.5 log (DeNeBd (MHz))) + 12.2 (dB) C/Ntot C/Ntot Otherwise if DeNeBd > InEqBd then + 12.2 (dB) C/Ntot
administrations. Attachment 2 contains the calculation methodology used for deriving the additional margin. Reasons: WRC-03 amended item C.8.e.1 of Annex 2 of Appendix 4 and defined it as the greater of either the carrier-to-noise ratio, required to meet the performance of the link under clear-sky conditions or the ratio, required to meet the short-time objectives of the link inclusive of the necessary margins. In the French text a comma exists before “inclusive of necessary margins”. Therefore, the submitted value of the C/N objective should include all necessary margins. to WRC-03, no indication of an inclusion of any additional margin into the C/N objective existed in the Radio Regulations. Therefore, the calculation methodology in Attachment 2 is used to define an additional margin to be added to the noise of the C/N objective to identify the C/I required to calculate the probability of causing harmful interference to frequency assignments of the networks received before 1 January 2005. Effective date of application of the Rule: immediately approval. NOC 3.1 Interfering cases MOD 3.2 Margin M, C/I, C/N algorithms The algorithms described in Attachment 1 shall be used to evaluate compliance with the mutually accepted interference criteria or with the single entry limits established in Table 2. Table 2 provided below takes into account the information submitted to the Bureau by administrations in accordance with Appendix 4 and the carrier type definition in § 3.1 above and is a simplification of Table 2 of Recommendation ITUR S.7412. 2 Single entry interference (SEI) protection criteria Interfering carrier type Desired carrier type Analogue (TV-FM) or other Digital Analogue (other than TV-FM) Analogue (TVFM) C/Ntot + 14 (dB) Digital If DeNeBd InEqBd then C/Ntot + 9.4 + 3.5 log (δ) – 6 log (i/10) (dB) (i.e. C/Ntot + 5.5 + 3.5 log (DeNeBd (MHz))) Otherwise if DeNeBd > InEqBd then C/Ntot + 12.2 (dB) C/Ntot + 12.2 (dB)
R18-RRB18.2-C-0014!!MSW-E.docx