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Hi Hossein, Thanks for your reply. I got it. Best Regards, Jerome ext. 15413 From: Hossein Sedarat [mailto:Hossein.Sedarat@xxxxxxxxxxxx]
Hi Jerome, You’re right that the threshold for Salz SNR was reduced from 32 dB to 28 dB but the _expression_ for Salz SNR was also slightly modified to include a constant
background term to capture the effects of other (primarily internal) noise sources. If you refer to my presentation at
http://www.ieee802.org/3/bz/public/mar16/Sedarat_3bz_01_0316.pdf, on slide 5 I have a plot that shows the tolerated SNR for external noises. This plot shows that the tolerated SNR
still remains at 32 dB for 5G at 100m. However, referring to the same plot, you see that the requirement for 2.5G is reduced from 32 dB to 29 dB. Given these numbers, the level of white noise as shown in slide 6, are -137 dBm/Hz and -125 dBm/Hz. So, the current
number in latest spec is correct for 5G but it appears that we failed to adjust the corresponding number for 2.5G. The current number is -127 dBm/Hz which has to be replaced by -125 dBm/Hz. -Hossein From: Jerome-yu [mailto:jerome-yu@xxxxxxxxxxx]
Hi Hossein, According to your comment at 802d3bz_D1p1_Clause_FINAL.pdf #6. "should result in 32 dB of Salz SNR. When the insertion loss of the channel is at the limit line
defined in 126-10, noise power spectral density is -137 dBm/Hz and -127 dBm/Hz for 5G and
2.5G, respectivley" The white noise level of alien cross talk rejection test is designed to meet Salz SNR 32dB. Since Salz SNR requirement has been changed to 28dB at D2.1, this white noise level is not appropriate for 5G and 2.5G. Should
the noise level be reviewed ? Sincerely, Jerome ext. 15413
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