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Digital Radio Relay System 7 to 38 Ghz 2 to 16 E1 Ethernet 100 Base T

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Digital Radio Relay System 7 to 38 Ghz 2 to 16 E1 Ethernet 100 Base T E DIGITAL RADIO RELAY SYSTEMS Digital radio relay system 7 to 38 GHz 2 to 16 E1 Ethernet 100 base T SAGEM – LINK F s SAGEM – LINK F Edition 1 – Mai 2003 1 DIGITAL RADIO RELAY 3 2 THE SAGEM-LINK F RANGE 4 2.1 FLEXIBILITY 4 2.2 PERFORMANCE 5 2.3 USER FRIENDLY 5 2.4 RELIABILITY 5 2.5 OPEN NMS 6 2.6 1+1 PROTECTION 6 3 VERSIONS AND CONFIGURATIONS 7 3.1 INDOOR UNIT 7 3.2 OUTDOOR UNIT 8 3.3 EQUIPMENT CONFIGURATIONS 9 4 INSTALLATION 10 4.1 INDOOR UNIT INSTALLATION 10 4.2 ODU WITH INTEGRATED ANTENNAS 10 4.3 ODU WITH POWER DIVIDER 10 4.4 ODU WITH STANDARD ANTENNAS 11 4.5 POWER REQUIREMENTS 11 5 FUNCTIONAL DESCRIPTION 12 5.1 TRANSMIT DIRECTION 12 5.2 RECEIVE DIRECTION 13 5.3 ODU TO IDU COMMUNICATION 14 5.4 FLEXIBILITY 15 5.5 1+1 PROTECTION 16 5.6 AUTOMATIC TRANSMIT POWER CONTROL 19 5.7 AUTOMATIC MEASUREMENT OF THE FADING MARGIN 19 5.8 ANALYSIS OF THE RADIO SPECTRUM AROUND THE RECEIVE CHANNEL 20 6 OPERATIONS AND MAINTENANCE 21 6.1 USER INTERFACES 21 6.2 LOCAL CONTROL 21 6.3 ALARM MONITORING 23 6.4 SNMP NETWORK MANAGEMENT 23 6.5 1+1 SYSTEM MONITORING AND CONTROL 24 1 DTC SAGEM LINK F ed 1 s SAGEM – LINK F 7 SPECIFICATIONS 25 7.1 GENERAL 25 7.2 TRANSMITTER 27 7.3 RECEIVER 28 7.4 TRIBUTARIES 29 7.5 AUXILIARY AND MANAGEMENT INTERFACES 29 7.6 ANTENNAS 30 7.7 MECHANICAL 31 7.8 ENVIRONMENTAL 32 7.9 RELIABILITY 32 7.10 MAINTENANCE 33 8 ANNEXE 34 8.1 DEFINITION OF A STANDARD LINK AND COMMERCIAL REFERENCE 34 8.2 ANTENNAS AND OPTIONS 36 8.3 SPARE PARTS 37 8.4 FREQUENCY SUB BANDS 38 GLOSSARY OF ABBREVIATIONS 42 2 s DTC SAGEM LINK F ed1 SAGEM – LINK F 1 DIGITAL RADIO RELAY For more than thirty years now, SAGEM’s expertise has been behind the implementation of digital radio relay networks in over 80 countries around the world and under a wide variety of local climatic and topological site conditions. SAGEM’s full range of possibilities covers all the frequency bands from 7 GHz to 38 GHz and bit rates up to 16 x 2 Mbit/s, in a variety of network configurations : ! cellular networks, for base station-to-base station controller interconnections ; ! access networks, for simple, low-cost subscriber connections in rural or urban areas ; ! private networks, for implementation and interconnection of business networks and development of the transmission infrastructure of public utility services (electricity companies, railways and highways, etc.) 3 DTC SAGEM LINK F ed 1 s SAGEM – LINK F 2 The SAGEM-LINK F range SAGEM-LINK F is a digital radio relay system Fig. 2.1: SAGEM – LINK F in 1+0 configuration designed to meet the needs of a continuously evolving networks market and guarantees SAGEM-LINK F is highly flexible in terms of quality and reliability for short and medium transmission capacity and frequency bands distance point-to-point links. used. • The Indoor Unit (IDU) is multi-rate (from 2 to 16 E1) and is common to all frequency 2.1 bands. As an option, it enables to multiplex E1 and 100 base T interface • The Outdoor Unit (ODU) is multi-rate (from FLEXIBILITY 2 to 16 E1 and 100 base T): Outdoor Units is common to configuration of equipment : 1+0, 1+1 MHSB, SD, and FD. A complete range in frequencies and bit rates : SAGEM-LINK F is available in non protected configuration (1+0) and protected (1+1 MHSB, Space and/or Frequency Diversity). It covers the following frequency bands and bit rates • 7, 8, 13, 15, 18, 23, 26, 38 GHz • 2 to 16 E1, 100 base T 4 s DTC SAGEM LINK F ed1 SAGEM – LINK F 2.2 2.3 PERFORMANCE USER FRIENDLY 16QAM and QPSK modulation: 16 QAM and QPSK modulations are associ- Easy and compact installation : ated with high-performance Forward Error Cor- rection (FEC) and an efficient time domain Thanks to an extremely compact ODU associ- equalizer ated to an integrated antenna, an user-friendly software and integrated installation tools, the If required, spectrum efficiency can be im- installation and commissioning of a link are proved, using 16QAM modulation for 8 or 16 easier. E1 bit rate. The integrated antenna allows an easy In other cases, the standard QPSK modulation mounting of the ODU (in 1+0 and 1+1 configu- , exhibits a system gain of up to 120 dB and ration) without any specific tools and accesso- high resistance to interference. ries for the branching system. In a 1+0 configu- ration, a single coaxial cable is used to connect the Indoor Unit to the Outdoor Unit (two cables in a 1+1 protected configuration). This cable Other performances : can be up to 600 m in length. Integrated BER (bit error rate) and receive Flexible architecture : signal measurement systems permit to super- vise the link quality . The 30 dB transmit power Capacity agility of IDU and ODU, and Fre- range in steps of 1 dB allows an automatic quency-independent IDU provide great flexibil- transmit power control operation (ATPC) used ity in terminal configurations, and reduce local to minimize radio disturbances in congested support and maintenance costs. networks. Depending on the frequency band, its digitally synthesized frequency is adjustable in 250 kHz steps over a range up to 580 MHz. 2.4 SAGEM-LINK F is full compliant with the ETSI standards. RELIABILITY A high degree of integration and a low power consumption, combined with an excellent heat dissipation of the ODU guarantee the excep- tional reliability of SAGEM-LINK F. 5 DTC SAGEM LINK F ed 1 s SAGEM – LINK F ! The system is extendible from 1+0 to 1+1 versions with a very easy intervention on the Indoor Unit. 2.5 ! This architecture allows to minimize opera- tional cost by reducing the set of spare parts ! 1+1 versions : Mute hot stand by, space di- versity, frequency diversity OPEN NMS SNMP network management system SAGEM-LINK F offers SNMP interfaces for the connection to a centralized Network Manage- ment System. SAGEM LINK F can be man- aged by IONOS NMS or by any other external NMS. IONOS NMS is the SAGEM’s solution to manage all transmission equipment (optical, copper and radio). 2.6 1+1 PROTECTION Fig. 2.2 : SAGEM-LINK F in 1+1 configuration Economic protection solution The 1+1 configuration is realised with 2 ODU per terminal and a single IDU equipped of 2 Cable Interface Module. All the transmission functions are duplicated with the exception of the tributary multiplexer. This architecture of- fers many advantages: ! The 1+0 and 1+1 Indoor Units racks are identical. This allows a significant saving on space and a reduction in the basic cost of the 1+1 configuration. ! Hitless protection switching is provided for all tributary signals and auxiliary communica- tions channels. ! Only one network management interface is used, with the 1+1 terminal being managed as a single network element, and not as two independent network elements. 6 s DTC SAGEM LINK F ed1 SAGEM – LINK F 3 Fig. 3.1.1 : Indoor Unit 2 to 16 E1, 1+0 configuration Versions and configurations Fig. 3.1.2 : Indoor Unit 2 to 16 E1, 1+1configuration The main functions of the IDU are: ! multiplexing/data interface, 3.1 ! modem (QPSK and 16QAM) ! alarm/status monitoring, ! site-to-site communications, Indoor Unit ! power to the Outdoor Unit. Main Indoor Unit features: The Indoor Unit provides access to the various ! 1 auxiliary 64 kbit/s V11 interface, signals supported by the SAGEM-LINK F ter- ! 1 point-to-point engineering orderwire inter- minal equipment. face, ! 2 auxiliary 9600 baud V11/V28 interfaces, It operates independently of the operating fre- ! 1 V28 PC interface, quency band. The IDU is composed of : ! 5 alarm relay contacts, ! 4 external alarm ports (remote signalling and ! IDU Multiplexers E1 and Ethernet commands) ! Cable Interface Module (1 CIM in 1+0 and 2 ! Additional E1 available with UFX-E, at maxi- CIM in 1+1 operation) mum bit rate configuration, Indoor Unit versions : SAGEM-LINK F is fully software controllable via the PC interface (along with SAGEM-LINK Multiplexers : PILOT software). Different features of SAGEM ! UFX-S : 2x2 / 4x2 / 8x2 / 16x2 Mbit/s LINK PILOT are described in chapter 6. ! UFX-E : 2x2 / 4x2 / 8x2 / 16x2 Mbit/s and 100 base T The data rate can be changed by software Cable Interface Module : ! UFC-S : QPSK ! UFX-E : QPSK and 16 QAM software select- able 7 DTC SAGEM LINK F ed 1 s SAGEM – LINK F 3.2 Outdoor Unit ! Outdoor Unit The ODU consist of one transmitter and one receiver. It realizes frequency conversion and signal amplification. This is a weatherproof sealed assembly de- signed to be attached easily to the antenna without affecting antenna alignment, or a short Fig. 3.2 : SAGEM - LINK F in 1+1 configuration distance away using an adapter kit. (2 ODU and a coupler) Outdoor Units are specific to a given frequency band and sub band (described in chapter 8.4), and are common with different bit rates, Frequency Band Duplex Spacing modulation scheme, and configuration 1+0, 7 GHz 7.1 - 7.9 GHz 161, 154 MHz 1+1. 8 GHz 8.0 - 8.5 GHz 119 ,126, or 208 MHz 13 GHz 12.75 - 13.25 GHz 266 MHz No field adjustments, switch settings or other 15 GHz 14.4 – 15.35 GHz 420, 490 or 728 MHz modifications are required to operate an ODU.
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