ETSI TR 101 830-2-2008 Transmission and Multiplexing (TM) Access networks Spectral management on metallic access networks Part 2 Technical methods for performance evaluations (V1 2.pdf

1、 ETSI TR 101 830-2 V1.2.1 (2008-07)Technical Report Transmission and Multiplexing (TM);Access networks;Spectral management on metallic access networks;Part 2: Technical methods for performance evaluationsETSI ETSI TR 101 830-2 V1.2.1 (2008-07) 2 Reference RTR/ATTM-06004-2 Keywords access, ADSL, HDSL

2、, ISDN, VDSL, xDSL, local loop, modem, network, POTS, SDSL, spectral management, transmission, unbundling ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre l

3、a Sous-Prfecture de Grasse (06) N 7803/88 Important notice Individual copies of the present document can be downloaded from: http:/www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents betw

4、een such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be

5、 subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http:/portal.etsi.org/chairco

6、r/ETSI_support.asp Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2008. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTM, TIP

7、HONTM, the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI ETSI TR 101 830-2 V1.2.1 (2008-07) 3 Contents Intellectual Property Right

8、s5 Foreword.5 1 Scope 6 2 References 6 2.1 Normative references .7 2.2 Informative references7 3 Definitions and abbreviations.8 3.1 Definitions8 3.2 Abbreviations .10 4 Transmitter signal models for xDSL11 4.1 Generic transmitter signal model11 4.2 Transmitter signal model for “ISDN.2B1Q“ 12 4.3 Tr

9、ansmitter signal model for “ISDN.2B1Q/filtered“13 4.4 Line-shared signal model for “ISDN.2B1Q“14 4.5 Transmitter signal model for “ISDN.MMS43“ 15 4.6 Transmitter signal model for “ISDN.MMS43/filtered“15 4.7 Line-shared signal model for “ISDN.MMS43“ 16 4.8 Transmitter signal model for “HDSL.2B1Q“ .17

10、 4.9 Transmitter signal model for “HDSL.CAP“.18 4.10 Transmitter signal model for “SDSL“ 19 4.11 Transmitter signal model for “ADSL/POTS (FO)“ 20 4.12 Transmitter signal model for “ADSL/POTS (FDD)“ .20 4.13 Transmitter signal model for “ADSL/ISDN (FO)“.22 4.14 Transmitter signal model for “ADSL/ISDN

11、 (FDD)“23 4.15 Transmitter signal model for “ADSL2/J (FDD)“ .24 4.16 Transmitter signal model for “ADSL2/M (FDD)“ .25 4.17 Transmitter signal model for “VDSL1“26 4.17.1 Templates compliant with the ETSI main band plan28 4.17.2 Templates compliant with the ETSI optional band plan.31 4.18 Transmitter

12、signal models for “VDSL2“ 34 4.18.1 Noise floor 35 4.18.2 Building block #1 for “PSD Band Constructor“ .35 4.18.3 Building block #2 for “PSD Shaper“ 37 4.18.4 Building block #3 for “PSD notcher“ .37 4.18.5 Building block #4 for “PSD Power Restrictor“.38 4.18.6 Pre-defined downstream tables for “PSD

13、Band Constructor“.39 4.18.7 Pre-defined upstream tables for “PSD Band Constructor“43 4.18.8 Example definitions of VDSL2 transmitters.46 5 Generic receiver performance models for xDSL47 5.1 Generic input models for effective SNR 49 5.1.1 First order input model .49 5.2 Generic detection models .51 5

14、.2.1 Generic Shifted Shannon detection model51 5.2.2 Generic PAM detection model52 5.2.3 Generic CAP/QAM detection model 53 5.2.4 Generic DMT detection model .54 5.3 Generic models for echo coupling57 5.3.1 Linear echo coupling model57 6 Specific receiver performance models for xDSL .58 6.1 Receiver

15、 performance model for “HDSL.2B1Q“.58 6.2 Receiver performance model for “HDSL.CAP“.59 6.3 Receiver performance model for “SDSL“ 59 6.4 Receiver performance model for “ADSL/POTS (FO)“60 ETSI ETSI TR 101 830-2 V1.2.1 (2008-07) 4 6.5 Receiver performance model for “ADSL/POTS (FDD)“ .61 6.6 Receiver pe

16、rformance model for “ADSL/ISDN (FO)“ 63 6.7 Receiver performance model for “ADSL/ISDN (FDD)“ .64 6.8 Receiver performance model for “VDSL“ .65 7 Transmission and reflection models.66 7.1 Summary of test loop models.66 8 Crosstalk models 66 8.1 Basic models for crosstalk cumulation.66 8.1.1 Uniform c

17、umulation model.67 8.1.2 FSAN sum for crosstalk cumulation.68 8.2 Basic models for NEXT and FEXT coupling.68 8.2.1 Normalized NEXT and FEXT coupling at an elementary cable section.69 8.2.2 Normalized NEXT and FEXT coupling at distributed or branched cables.69 8.3 Basic models for crosstalk injection

18、.71 8.3.1 Forced noise injection.71 8.3.2 Current noise injection72 8.4 Overview of different network topologies72 8.5 Crosstalk evaluation for multi-node topologies73 8.6 Crosstalk evaluation for two-node topologies 74 9 Examples of evaluating various scenarios77 9.1 European Spectral Platform 2004

19、 (ESP/2004) .77 9.1.1 Technology mixtures within ESP/2004 77 9.1.2 System models within ESP/200478 9.1.3 Topology models within ESP/2004 79 9.1.4 Loop models within ESP/2004 .82 9.1.5 Scenarios within ESP/2004.83 Annex A: Bibliography84 History 85 ETSI ETSI TR 101 830-2 V1.2.1 (2008-07) 5 Intellectu

20、al Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (I

21、PRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR sea

22、rches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Technical Report (TR) has been produced by

23、ETSI Technical Committee Access, Terminals, Transmission and Multiplexing (ATTM). The present document is part 2 of a multi-part deliverable covering Transmission and Multiplexing (TM); Access networks; Spectral management on metallic access networks, as identified below: Part 1: “Definitions and si

24、gnal library“; Part 2: “Technical methods for performance evaluations“; ETSI ETSI TR 101 830-2 V1.2.1 (2008-07) 6 1 Scope The present document gives guidance on a common methodology for studying the impact of noise on xDSL performance (maximum reach, noise margin, maximum bitrate) when changing para

25、meters within various Spectral Management scenarios. These methods enable reproducible results and a consistent presentation of the assumed conditions (characteristics of cables and xDSL equipment) and configuration (chosen technology mixture and cable fill) of each scenario. The technical methods i

26、nclude computer models for estimating: xDSL receiver capability of detecting signals under noisy conditions; xDSL transmitter characteristics; cable characteristics; crosstalk cumulation in cables, originating from a mix of xDSL disturbers. The objective is to provide the technical means for evaluat

27、ing the performance of xDSL equipment within a chosen scenario. This includes the description of performance properties of equipment. Another objective is to assist the reader with applying this methodology by providing examples on how to specify the configuration and the conditions of a scenario in

28、 an unambiguous way. The distinction is that a configuration of a scenario can be controlled by access rules while the conditions of a scenario cannot. Possible applications of the present document include: Studying access rules, for the purpose of bounding the crosstalk in unbundled networks. Study

29、ing deployment rules, for the various systems present in the access network. Studying the impact of crosstalk on various technologies within different scenarios. The scope of the present document is explicitly restricted to the methodology for defining scenarios and quantifying the performance of eq

30、uipment within such a scenario. All judgement on what access rules are required, what performance is acceptable, or what combinations are spectral compatible, is explicitly beyond the scope of the present document. The same applies for how realistic the example scenarios are. The models in the prese

31、nt document are not intended to set requirements for DSL equipment. These requirements are contained in the relevant transceiver specifications. The models in the present document are intended to provide a reasonable estimate of real-world performance but may not include every aspect of modem behavi

32、our in real networks. Therefore real-world performance may not accurately match performance numbers calculated with these models. 2 References References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For a specific reference, subsequ

33、ent revisions do not apply. Non-specific reference may be made only to a complete document or a part thereof and only in the following cases: - if it is accepted that it will be possible to use all future changes of the referenced document for the purposes of the referring document; - for informativ

34、e references. Referenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. ETSI ETSI TR 101 830-2 V1.2.1 (2008-07) 7 For online referenced documents, information sufficient to identify and locate the source shall be pro

35、vided. Preferably, the primary source of the referenced document should be cited, in order to ensure traceability. Furthermore, the reference should, as far as possible, remain valid for the expected life of the document. The reference shall include the method of access to the referenced document an

36、d the full network address, with the same punctuation and use of upper case and lower case letters. NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee their long term validity. 2.1 Normative references The following referenced documents are

37、 indispensable for the application of the present document. For dated references, only the edition cited applies. For non-specific references, the latest edition of the referenced document (including any amendments) applies. Not applicable. 2.2 Informative references The following referenced documen

38、ts are not essential to the use of the present document but they assist the user with regard to a particular subject area. For non-specific references, the latest version of the referenced document (including any amendments) applies. SpM i.1 ETSI TR 101 830-1: “Transmission and Multiplexing (TM); Ac

39、cess networks; Spectral management on metallic access networks; Part 1: Definitions and signal library“. i.2 ANSI T1E1.4, T1.417-2003: “Spectrum Management for loop transmission systems“. ISDN i.3 ETSI TS 102 080: “Transmission and Multiplexing (TM); Integrated Services Digital Network (ISDN) basic

40、rate access; Digital transmission system on metallic local lines“. HDSL i.4 ETSI TS 101 135: “Transmission and Multiplexing (TM); High bit-rate Digital Subscriber Line (HDSL) transmission systems on metallic local lines; HDSL core specification and applications for combined ISDN-BA and 2 048 kbit/s

41、transmission“. SDSL i.5 ETSI TS 101 524: “Transmission and Multiplexing (TM); Access transmission system on metallic access cables; Symmetric single pair high bitrate Digital Subscriber Line (SDSL)“. i.6 ITU-T Recommendation G.991.2: “Single-Pair High-Speed Digital Subscriber Line (SHDSL) transceive

42、rs“. ADSL i.7 ETSI TS 101 388: “Transmission and Multiplexing (TM); Access transmission systems on metallic access cables; Asymmetric Digital Subscriber Line (ADSL) - European specific requirements ITU-T Recommendation G.992.1 modified“. i.8 ITU-T Recommendation G.992.1: “Asymmetric digital subscrib

43、er line (ADSL) transceivers“. i.9 ITU-T Recommendation G.992.3: “Asymmetric digital subscriber line (ADSL) transceivers - 2 (ADSL2)“. ETSI ETSI TR 101 830-2 V1.2.1 (2008-07) 8 i.10 ITU-T Recommendation G.992.5: “Asymmetric digital subscriber line (ADSL) transceivers - extended bandwidth ADSL2 (ADSL2

44、plus)“. VDSL i.11 ETSI TS 101 270-1: “Transmission and Multiplexing (TM); Access transmission systems on metallic access cables; Very high speed Digital Subscriber Line (VDSL); Part 1: Functional requirements“. i.12 ETSI TS 101 271: “Access Terminals Transmission and Multiplexing (ATTM); Access tran

45、smission systems on metallic pairs; Very high speed Digital Subscriber Line system (VDSL2)“. ITU-T Recommendation G993.2, modified. i.13 ITU-T Recommendation G993.2: “Very High Speed Digital Subscriber Line 2 (VDSL2)“. SPLITTERS i.14 ETSI TS 101 952-1-3: “Access network xDSL transmission filters; Pa

46、rt 1: ADSL splitters for European deployment; Sub-part 3: Specification of ADSL/ISDN splitters“. i.15 ETSI TS 101 952-1-4: “Access network xDSL transmission filters; Part 1: ADSL splitters for European deployment; Sub-part 4: Specification of ADSL over “ISDN or POTS“ universal splitters“. OTHER i.16

47、 ITU-T Recommendation G997.1: “Physical layer management for digital subscriber line (DSL) receivers“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: access port: physical location, appointed by the loop provider,

48、where signals (for transmission purposes) are injected into the local loop wiring access rule: mandatory rule for achieving access to the local loop wiring, equal for all network operators who are making use of the same network cable that bounds the crosstalk in that network cable cable fill (or deg

49、ree of penetration): number and mixture of transmission techniques connected to the ports of a binder or cable bundle that are injecting signals into the access ports Cable Management Plan (CMP): list of selected access rules dedicated to a specific network NOTE: This list may include associated descriptions and explanations. deployment rule: voluntary rule, irrelevant for achieving access to the local loop wiring and proprietary to each individual network operator NOTE: A deployment rule reflects a network operators own vi