Telecommunications Industry Association TR41.9-06-08-009-M Document Cover Sheet Project Number PN-3-0016-RV2 Document Title Proposed ADSL All Digital Mode Requirements for TIA-968-B Source Cisco Systems, Inc. / Industry Canada Contact Tim Lawler 170 West Tasman Dr. San Jose, CA 95134 Phone: (408) 527-0681 Fax: (408) 526-4184 Email: tlawler@cisco.com Matthew Mulvihill 3701 Carling Ave. Bldg. #94 Ottawa, ON, CAN K2H 8S2 Distribution Intended Purpose of Document (Select one) Phone: 613-990-5314 Fax: 613-990-4752 Email: Mulvihill.matthew@ic.gc.ca TR-41.9 X For Incorporation Into TIA Publication For Information Other (describe) - The document to which this cover statement is attached is submitted to a Formulating Group or sub-element thereof of the Telecommunications Industry Association (TIA) in accordance with the provisions of Sections 6.4.1–6.4.6 inclusive of the TIA Engineering Manual dated March 2005, all of which provisions are hereby incorporated by reference. Abstract There are currently no US requirements covering ADSL All Digital Mode. However, there are ADSL All Digital Mode requirements in Industry Canada CS-03, Part VIII. For Harmonization between TIA-968 and CS-03 these requirements should be included in TIA-968-B. ADSL All Digital Mode terminal equipment transmits power in the voiceband that is higher then ADSL over POTS and does not support the use of analog splitting technology for coexistence on the same pair with voiceband services. Therefore, the PSD limits for ADSL in TIA-968-A-3 are not applicable to ADSL All Digital Mode. The requirements in this contribution for come from ITU-T G.992.3, Annex I & J, G.992.5, Annex I & J and CS-03, Part VIII. v1.0 – 20050426 Telecommunications Industry Association TR41.9-06-08-009-M NEW CLAUSES 4.5.9.1.5 Power Spectral Density and Total Power for ADSL2 All Digital Mode The power spectral density (PSD) and total power of the signal transmitted by the ADSL2 All Digital Mode shall meet the following requirements: ADSL2 All Digital Mode shall comply with one or more of the upstream spectral masks (ADLU32 to ADLU-64) defined in the following figure and tables. ADSL2 All Digital Mode shall operate with an aggregate (total average) power not to exceed +13.4 dBm into 100 ohm measured between the Inband peak PSD (3 kHz < f < f1). -20 -30 -40 -60 -70 -80 -90 -100 -110 Frequency (kHz) Figure 4.XX PSD Mask for ADSL2 All Digital Mode Page 2 30 00 0 16 30 12 21 f2 f1 3 1. 5 -120 0 PSD MASK (dBm/Hz) -50 Telecommunications Industry Association TR41.9-06-08-009-M Table 4.XX PSD Mask Definition for ADSL2 All Digital Mode Frequency Band (kHz) 0.2 < f ≤ 1.5 1.5 < f ≤ 3 3 < f ≤ f1 f1 < f ≤ f2 f2 < f ≤ 1221 1221 < f ≤ 1630 1630 < f ≤ 30000 PSD (dBm/Hz) -46.5 -46.5 + (inband peak PSD + 46.5) x log2 (f/1.5) inband peak PSD inband peak PSD -48 log2 (f/f1) -90 -90 peak, with max power in the [f, f + 1 MHz] window of (-30 - 48 x log2 (f/1221)) dBm -90 peak, with max power in the [f, f + 1 MHz] window of -50 dBm NOTE 1 – All PSDs measurements are into a 100 ohm. NOTE 2 – The breakpoints in the table shall be connected by linear straight lines on a dB/log(f) plot. NOTE 3 – Above 3 kHz, the peak PSD shall be measured with a 10 kHz resolution bandwidth. Below 3 kHz, the peak PSD shall be measured with a 100 Hz resolution bandwidth. NOTE 4 – The power in a 1 MHz sliding window is measured in a 1 MHz bandwidth, starting at the measurement frequency. Table 4.XX Inband peak PSD Mask Designator for ADSL2 All Digital Mode Designator ADLU - 32 ADLU - 36 ADLU - 40 ADLU - 44 ADLU - 48 ADLU - 52 ADLU - 56 ADLU - 60 ADLU - 64 Inband peak PSD (dBm/Hz -34.5 -35 -35.5 -35.9 -36.3 -36.6 -36.9 -37.2 -37.5 Frequency f1 (kHz) 138 155.25 172.5 189.75 207 224.25 241.5 258.75 276 Page 3 Frequency f2 (kHz) 307 343 379 415 450 485 520 554 589 Telecommunications Industry Association 4.5.9.1.6 TR41.9-06-08-009-M Power Spectral Density and Total Power for ADSL2+ All Digital Mode The power spectral density (PSD) and total power of the signal transmitted by the ADSL2+ All Digital Mode shall meet the following requirements: ADSL2+ All Digital Mode shall comply with one or more of the upstream spectral masks (ADLU32 to ADLU-64) defined in the following figure and tables. ADSL2+ All Digital Mode shall operate with an aggregate (total average) power not to exceed +13.4 dBm into 100 ohm measured between the Inband peak PSD (3 kHz < f < f1). -30 -40 PSD MASK (dBm/Hz) -50 -60 -70 -80 -90 -100 -110 -120 0 1.5 3 f1 fint 686 1411 1630 5275 Frequency (kHz) Figure 4.XX PSD Mask for ADSL2+ All Digital Mode Page 4 30000 Telecommunications Industry Association TR41.9-06-08-009-M Table 4.XX PSD Mask Definition for ADSL2+ All Digital Mode Frequency (kHz) 0.2 1.5 3 f1 f_int 686 1411 1630 5275 30000 PSD (dBm/Hz) -46.5 -46.5 inband peak PSD inband peak PSD PSD_int -100 -100 and -100 with a 1 MHz Measurement Bandwidth -100 and -110 with a 1 MHz Measurement Bandwidth -100 and -112 with a 1 MHz Measurement Bandwidth -100 and -112 with a 1 MHz Measurement Bandwidth NOTE 1 – All PSD measurements are in 100 ohm. NOTE 2 –The breakpoints in the table shall be connected by linear straight lines on a dB/log(f) plot. NOTE 3 – MBW specifies the measurement bandwidth. The MBW specified for a certain breakpoint with frequency fi is applicable for all frequencies satisfying f i< f ≤ fj, where fj is the frequency of the next specified breakpoint. NOTE 4 – The power in a 1-MHz sliding window is measured in a 1-MHz bandwidth, starting at the measurement frequency, i.e., power in the [f, f + 1 MHz] window shall conform to the specification at frequency f. Table 4.XX Inband peak PSD Mask Designator for ADSL2+ All Digital Mode Designator Inband peak PSD (dBm/Hz) Frequency f1 (kHz) ADLU - 32 ADLU - 36 ADLU - 40 ADLU - 44 ADLU - 48 ADLU - 52 ADLU - 56 ADLU - 60 ADLU - 64 -34.5 -35 -35.5 -35.9 -36.3 -36.6 -36.9 -37.2 -37.5 138 155.25 172.5 189.75 207 224.25 241.5 258.75 276 Page 5 Intercept Frequency f_int (kHz) 242.92 274 305.16 336.4 367.69 399.04 430.45 461.9 493.41 Intercept PSD Level PSD_int (dBm/Hz) -93.2 -94 -94.7 -95.4 -95.9 -96.5 -97 -97.4 -97.9 Telecommunications Industry Association TR41.9-06-08-009-M Longitudinal Output Voltage 4.5.9.1.4 Longitudinal Output Voltage ADSL modems shall meet the voiceband longitudinal voltage limitations of 4.5.4.1 as well as the limitations of 4.5.5.2.1 for a center frequency of 8 kHz, which covers the frequency span from 4 to 12 kHz. In addition, using the illustrative longitudinal output voltage measurement circuit in Figure 4.5, ADSL and ADSL All Digital Mode modems shall limit longitudinal output voltage to the values shown in the table below: Table 4.12 (Transverse Balance Requirements) Append the following row to Table 4.12: ADSL All Digital Mode 0.2 to 2425 500/90 Page 6 100