As an example of a BS spectrum emission masks (i.e. CDMA DL as interferer), TS 25.104 [1] have shown that different values may need to be considered depending on the BS maximum output power Table 64 presents Spectrum emission mask values, BS maximum output power P ³ 43 dBm.
Table 64: Spectrum emission mask values, BS maximum output power P ³ 43 dBm (from [1])
Frequency offset of measurement filter ‑3dB point, Df | Frequency offset of measurement filter centre frequency, f_offset | Minimum requirement Band I, II, III, IV, V, VII, VIII, X | Additional requirements Band II, IV, V, X | Measurement bandwidth |
2.5 MHz <= Df < 2.7 MHz | 2.515MHz <= f_offset < 2.715MHz | -14 dBm | -15 dBm | 30 kHz |
2.7 MHz <= Df < 3.5 MHz | 2.715MHz <= f_offset < 3.515MHz |  | -15 dBm | 30 kHz |
(see note 3) | 3.515MHz <= f_offset < 4.0MHz | -26 dBm | NA | 30 kHz |
3.5 MHz <= Df <= Dfmax | 4.0MHz <= f_offset < f_offsetmax | -13 dBm | -13 dBm 4 | 1 MHz |
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Note that for this example, we add the limit from Recommendation ITU-R SM.329 for frequency offset above 12.5 MHz [2].
Table 65: Example of derivation of 3GPP spectrum emission mask into a SEAMCAT input format (with addition of the ITU-R Rec. SM.329 limit)
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Frequency offset of measurement filter ‑3dB point, Df | Minimum requirement Band VIII | SEAMCAT (in ref/measurement bandwidth) | Measurement bandwidth |
2.5 MHz <= Df < 2.7 MHz | -14 dBm | 43 – (-14) = 57 | 30 kHz |
2.7 MHz <= Df < 3.5 MHz |  | Linear | 30 kHz |
(see note 3) | -26 dBm | 43 – (-26) = 69 | 30 kHz |
3.5 MHz £ Df <= Dfmax | -13 dBm | 43 – (-13) = 56 | 1 MHz |
Above 12.5 MHz (ITU-R SM.329) | -36 dBm | 43 – (-36) = 79 | 100 kHz |
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