1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T G.9901 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (06/2017) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Access networks In premises networks Narrowband orthogonal frequency division multiplex
2、ing power line communication transceivers Power spectral density specification Recommendation ITU-T G.9901 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100G.199 GENERAL CHARACTERISTICS COMMON TO ALL ANA
3、LOGUE CARRIER-TRANSMISSION SYSTEMS G.200G.299 INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON METALLIC LINES G.300G.399 GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON RADIO-RELAY OR SATELLITE LINKS AND INTERCONNECTION WITH METALLIC LINES G.400G.449 COO
4、RDINATION OF RADIOTELEPHONY AND LINE TELEPHONY G.450G.499 TRANSMISSION MEDIA AND OPTICAL SYSTEMS CHARACTERISTICS G.600G.699 DIGITAL TERMINAL EQUIPMENTS G.700G.799 DIGITAL NETWORKS G.800G.899 DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G.900G.999 MULTIMEDIA QUALITY OF SERVICE AND PERFORMANCE GENERIC AND
5、 USER-RELATED ASPECTS G.1000G.1999 TRANSMISSION MEDIA CHARACTERISTICS G.6000G.6999 DATA OVER TRANSPORT GENERIC ASPECTS G.7000G.7999 PACKET OVER TRANSPORT ASPECTS G.8000G.8999 ACCESS NETWORKS G.9000G.9999 Metallic access networks G.9700G.9799 Optical line systems for local and access networks G.9800G
6、.9899 In premises networks G.9900G.9999 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T G.9901 (06/2017) i Recommendation ITU-T G.9901 Narrowband orthogonal frequency division multiplexing power line communication transceivers Power spectral density specification S
7、ummary Recommendation ITU-T G.9901 specifies the transmitted output voltage in the band 9535 kHz, the control parameters that determine spectral content, power spectral density (PSD) mask requirements, a set of tools to support the reduction of the transmit PSD, the means to measure this PSD for tra
8、nsmission over power line wiring, as well as the allowable total transmit power into a specified termination impedance. Recommendation ITU-T G.9901 also complements the system architecture, physical layer (PHY) and data link layer (DLL) specifications in Recommendations ITU-T G.9902 (G.hnem), ITU-T
9、G.9903 (G3-PLC), and ITU-T G.9904 (PRIME). This edition contains the following modifications. The output voltage limits set for the ITU-T G.9902 FCC-2 bandplan have been extended to ITU-T G.9903 technology and thus placed in the main body. Care has been taken to reference existing standards as far a
10、s possible. The clarification of the tone masking feature in Annex B. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T G.9901 2012-11-20 15 11.1002/1000/11827 1.1 ITU-T G.9901 (2012) Amd. 1 2013-07-12 15 11.1002/1000/11895 2.0 ITU-T G.9901 2014-04-04 15 11.1002/1000/12089 3.0
11、 ITU-T G.9901 2017-06-30 15 11.1002/1000/13171 Keywords Narrowband power line communications, power spectral density, conducted emission limits, G3-PLC, PRIME * To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommendations
12、unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T G.9901 (06/2017) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecomm
13、unication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Asse
14、mbly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology whi
15、ch fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with t
16、his Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory lan
17、guage such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTSITU draws attention to the possibility that the practice or implementation of this
18、Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date o
19、f approval of this Recommendation, ITU had received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TS
20、B patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2017 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T G.9901 (06/2017) iii Table of Contents Page 1 Scope . 1 2 References . 1 3 Definitions 2 3.
21、1 Terms defined elsewhere 2 3.2 Terms defined in this Recommendation . 2 4 Abbreviations and acronyms 2 5 Conventions 2 6 Transmitted output voltage specifications relating to the 3 kHz148.5 kHz band . 2 7 Transmitted output voltage specifications relating to the 148.5 kHz535 kHz band . 2 7.1 Artifi
22、cial mains network . 3 Annex A Power spectral density specifications for G.hnem transceivers 4 A.1 Frequency band specifications . 4 A.2 Transmit power spectral density mask . 7 Annex B Power spectral density specifications for G3-PLC transceivers 8 B.1 Frequency band specifications . 8 B.3 Transmit
23、 power spectral density mask . 9 Annex C Power spectral density specifications for PRIME transceivers . 12 C.1 Introduction 12 C.2 PHY parameters 12 C.3 CENELEC bandplan 12 Rec. ITU-T G.9901 (06/2017) 1 Recommendation ITU-T G.9901 Narrowband orthogonal frequency division multiplexing power line comm
24、unication transceivers Power spectral density specification 1 Scope This Recommendation specifies the control parameters that determine spectral content, power spectral density (PSD) mask requirements, a set of tools to support the reduction of the transmit PSD, the means to measure this PSD for the
25、 transmission over power line wiring, as well as the allowable total transmit power into a specified termination impedance. It complements the system architecture, physical layer (PHY), and data link layer (DLL) specifications in ITU-T G.9902 (G.hnem), ITU-T G.9903 (G3-PLC) and ITU-T G.9904 (PRIME).
26、 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revisi
27、on; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this R
28、ecommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T G.9902 Recommendation ITU-T G.9902 (2012), Narrowband orthogonal frequency division multiplexing power line communication transceivers for ITU-T G.hnem networks. ITU-T G.9903 Recommendation ITU-T G.9903
29、(2014), Narrowband orthogonal frequency division multiplexing power line communication transceivers for G3-PLC networks. ITU-T G.9904 Recommendation ITU-T G.9904 (2012), Narrowband orthogonal frequency division multiplexing power line communication transceivers for PRIME networks. IEC 61334-5-1 IEC
30、61334-5-1:2001, Distribution automation using distribution line carrier systems Part 5-1: Lower layer profiles The spread frequency shift keying (S-FSK) profile. CISPR 16-1-2 CISPR 16-1-2:2014, Specification for radio disturbance and immunity measuring apparatus and methods Part 1-2: Radio disturban
31、ce and immunity measuring apparatus Coupling devices for conducted disturbance measurements. EN 50065-1 EN 50065-1:2011, Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148, 5 kHz Part 1: General requirements, frequency bands and electromagnetic disturbances. ARIB
32、STD-T84 ARIB STD-T84 (2002), Power line communication equipment (10 kHz-450 kHz). 2 Rec. ITU-T G.9901 (06/2017) 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following term defined elsewhere: 3.1.1 bandplan ITU-T G.9902: This is a specific range of the frequency spectrum tha
33、t is defined by a lower frequency and upper frequency. 3.2 Terms defined in this Recommendation None. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: AMN Artificial Mains Network CES Circuit Emulation Service DLL Data Link Layer FCH Frame Control Heade
34、r FFT Fast Fourier Transform LV Low Voltage NB-PLC Narrowband-Power Line Communication OFDM Orthogonal Frequency Division Multiplexing PFH PHY-Frame Header PHY Physical layer PLC Power Line Communication PMSC Permanently Masked Subcarrier PSD Power Spectral Density S-FSK Spread Frequency Shift Keyin
35、g 5 Conventions None. 6 Transmitted output voltage specifications relating to the 3 kHz148.5 kHz band For Europe, EN 50065-1 shall apply. 7 Transmitted output voltage specifications relating to the 148.5 kHz535 kHz band The following limits shall be met. 1) The output signal voltage measured using a
36、 peak detector with a 200 Hz bandwidth in no part of the frequency band shall exceed 120 dB (V) when loaded on an artificial mains network (AMN). 2) The output signal voltage measured using a peak detector over the entire band when loaded on an AMN shall not exceed 137 dB (V). Rec. ITU-T G.9901 (06/
37、2017) 3 3) The output signal voltage outside the band 148.5 kHz535 kHz shall comply with EN 50065-1. 7.1 Artificial mains network The AMN shall comply with clause 4.4 of CISPR16-1-2. The test setup shall comply with Figure 4 of EN50065-1 for single-phase PLC systems and with Figure 6 of EN 50065-1 f
38、or three-phase PLC systems. 4 Rec. ITU-T G.9901 (06/2017) Annex A Power spectral density specifications for G.hnem transceivers (This annex forms an integral part of this Recommendation.) NOTE This annex includes the PSD specifications relating to ITU-T G.9902. A.1 Frequency band specifications For
39、compliance with this Recommendation, it is mandatory to support at least one of the CENELEC bandplans or at least one of the FCC bandplans. A.1.1 CENELEC band When operating in the CENELEC band (3 kHz148.5 kHz), a node shall use the control parameters specified in Table A.1 (see clause 8.4.7 of ITU-
40、T G.9902). Table A.1 Orthogonal frequency division multiplexing modulator control parameters for the CENELEC band Notation Value N 128 fSC 1.562 5 kHz NGI-PL 12 1, 2 bit mapping 24 3, 4 bit mapping NGI-HD 0 NGI-CES 0 8 fUS 64 fSC The CENELEC band is divided into sub-bands, forming bandplans A, B and
41、 CD described in clauses A.1.1.1 to A.1.1.3. A.1.1.1 CENELEC-A bandplan Parameters for the CENELEC-A bandplan are defined in Table A.2. Table A.2 Parameters for CENELEC-A bandplan Notation Value Note fSTART 35.937 5 kHz Lowest frequency of CENELEC-A bandplan (subcarrier number 23) fEND 90.625 kHz Hi
42、ghest frequency of CENELEC-A bandplan (subcarrier number 58) Permanently masked subcarrier indices 0 to 22, 59 to 127 Clause 8.4.2.1 of ITU-T G.9902 A.1.1.2 CENELEC-B bandplan Parameters for the CENELEC-B bandplan are defined in Table A.3. Rec. ITU-T G.9901 (06/2017) 5 Table A.3 Parameters for CENEL
43、EC-B bandplan Notation Value Note fSTART 98.437 5 kHz Lowest frequency of CENELEC-B bandplan (subcarrier number 63) fEND 120.312 5 kHz Highest frequency of CENELEC-B bandplan (subcarrier number 77) Permanently masked subcarrier indices 0 to 62, 78 to 127 Clause 8.4.2.1 of ITU-T G.9902 A.1.1.3 CENELE
44、C-CD bandplan Parameters for the CENELEC-CD bandplan are defined in Table A.4. Table A.4 Parameters for CENELEC-CD bandplan Notation Value Note fSTART 125 kHz Lowest frequency of CENELEC-CD bandplan (subcarrier number 80) fEND 143.75 kHz Highest frequency of CENELEC-CD bandplan (subcarrier number 92
45、) Permanently masked subcarrier indices 0 to 79, 93 to 127 Clause 8.4.2.1 of ITU-T G.9902 A.1.2 FCC bandplans When operating in the FCC band (9 kHz490 kHz), a node shall use the control parameters specified in Table A.5 (see clause 8.4.7 of ITU-T G.9902). Table A.5 Orthogonal frequency division mult
46、iplexing modulator control parameters for the FCC band Notation Value N 256 fSC 3.125 kHz NGI 24 1, 2 bit mapping 48 3, 4 bit mapping NGI-HD 0 NGI-CES 0 16 fUS 128 fSC Bandplans FCC, FCC-1 and FCC-2 defined over the FCC band are described in clauses A.1.2.1 to A.1.2.3. Additional bandplans over the
47、FCC band are for further study. 6 Rec. ITU-T G.9901 (06/2017) A.1.2.1 FCC bandplan Parameters for the FCC bandplan are defined in Table A.6. Table A.6 Parameters for FCC bandplan Notation Value Note fSTART 34.375 kHz Lowest frequency of FCC bandplan (subcarrier number 11) fEND 478.125 kHz Highest fr
48、equency of FCC bandplan (subcarrier number 153) Permanently masked subcarrier indices 0 to 10, 154 to 255 Clause 8.4.2.1 of ITU-T G.9902 A.1.2.2 FCC-1 bandplan Parameters for FCC-1 bandplan are defined in Table A.7. Table A.7 Parameters for FCC-1 bandplan Notation Value Note fSTART 34.375 kHz Lowest
49、 frequency of FCC bandplan (subcarrier number 11) fEND 137.5 kHz Highest frequency of FCC bandplan (subcarrier number 44) Permanently masked subcarrier indices 0 to 10, 45 to 255 Clause 8.4.2.1 of ITU-T G.9902 A.1.2.3 FCC-2 bandplan Parameters for FCC-2 bandplan are defined in Table A.8. Table A.8 Parameters for FCC-2 bandplan Notation Value Note fSTART 150 kHz Lowest frequency of FCC bandplan (subcarrier number 48) f
