26 Building penetration loss and standard deviation Lb b Frequency (MHz) 65 100 200 Mean building penetration loss (dB) 8 9 9 Lb Standard deviation of the building penetration 3 3 3 loss (dB) b 3.6 Allowance for man-made noise The allowance for man-made noise, MMN (dB), takes into account the effect of man-made noise received by the antenna on the system performance. The system equivalent noise figure (dB) to Fs be used for coverage calculations is calculated from the receiver noise figure (dB) and Fr MMN (dB). Recommendation ITU-R P.372-8 the legal values to calculate the allowance of man-made noise in different areas and frequencies with the definitions of the antenna noise figure, its mean values and the values of decile variations (10% and 90%) measured in different regions. For Fa,med all reception modes the residential area (Curve B) is assumed. Taking into account a receiver noise figure of 7 dB for DRM, the MMN can be computed for Fr fixed, portable and mobile reception. The results are shown in Table 27. TABLE 27 Allowance for man-made for fixed, portable and mobile reception Frequency (MHz) 65 100 200 Allowance for man-made noise (dB) for fixed 15.38 10.43 3.62 (FX), portable (PO, PI) and mobile (MO) reception (Fr = 7 dB) The of the decile location variations (10% and 90%) in residential area is given by 5.8 dB. Therefore the standard deviation of MMN for fixed, portable and mobile reception = 4.53 dB, see Table 28. σMMN TABLE 28 Standard deviation of MMN for fixed, portable and mobile reception σMMN Frequency (MHz) 65 100 200 Standard deviation of MMN (dB) for fixed 4.53 4.53 4.53 σMMN (FX), portable (PO, PI) and mobile (MO) reception Due to a very low antenna gain for portable handheld reception the MMN for this reception mode is negligible and therefore assumed to be 0 (dB), see 29.
26 Building penetration loss Lb and standard deviation b Frequency (MHz) 65 100 200 Mean building penetration loss Lb (dB) 8 9 9 Standard deviation of the building penetration loss b (dB) 3 3 3 3.6 Allowance for man-made noise The allowance for man-made noise, MMN (dB), takes into account the effect of man-made noise received by the antenna on the system performance. The system equivalent noise figure Fs (dB) to be used for coverage calculations is calculated from the receiver noise figure Fr (dB) and MMN (dB). Recommendation ITU-R P.372-8 the legal values to calculate the allowance of man-made noise in different areas and frequencies with the definitions of the antenna noise figure, its mean values Fa,med and the values of decile variations (10% and 90%) measured in different regions. For all reception modes the residential area (Curve B) is assumed. Taking into account a receiver noise figure Fr of 7 dB for DRM, the MMN can be computed for fixed, portable and mobile reception. The results are shown in Table 27. TABLE 27 Allowance for man-made for fixed, portable and mobile reception Frequency (MHz) 65 100 200 Allowance for man-made noise (dB) for fixed (FX), portable (PO, PI) and mobile (MO) reception (Fr = 7 dB) 15.38 10.43 3.62 The of the decile location variations (10% and 90%) in residential area is given by 5.8 dB. Therefore the standard deviation of MMN for fixed, portable and mobile reception σMMN = 4.53 dB, see Table 28. TABLE 28 Standard deviation of MMN σMMN for fixed, portable and mobile reception Frequency (MHz) 65 100 200 Standard deviation of MMN σMMN (dB) for fixed (FX), portable (PO, PI) and mobile (MO) reception 4.53 4.53 4.53 Due to a very low antenna gain for portable handheld reception the MMN for this reception mode is negligible and therefore assumed to be 0 (dB), see 29.
R-REC-BS.1660-5-201112-S!!MSW-E.docx