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Link Budget Analysis Guide iii Evolution Release 1.3 Link Budget Analysis Guide

Link Budget Analysis Guide iii Evolution Release 1.3 Link Budget Analysis GuideiDX Release 4.2 April 16, 2018 ii Link Budget Analysis Guide, iDX Release 4.2 Copyright © 2018. VT iDirect, Inc., 13861 Sunrise Valley Drive, Suite 300, Herndon, VA 20171, USA. All rights reserved. Reproduction in whole or in part without permission is prohibited. Information contained herein is subject to change without notice. The specifications and information regarding the products in this document are subject to change without notice. All statements, information and recommendations in this document are believed to be accurate, but are presented without warranty of any kind, express, or implied. Users must take full responsibility for their application of any products. Trademarks, brand names and products mentioned in this document are the property of their respective owners. All such references are used strictly in an editorial fashion with no intent to convey any affiliation with the name or the product's rightful owner. VT iDirect® is a global leader in IP-based satellite communications providing technology and solutions that enable our partners worldwide to optimize their networks, differentiate their services and profitably expand their businesses. Our product portfolio, branded under the name iDirect®, sets standards in performance and efficiency to deliver voice, video and data connectivity anywhere in the world. VT iDirect® is the world’s largest TDMA enterprise VSAT manufacturer and is the leader in key industries including mobility, military/government and cellular backhaul. Company web site: www.idirect.net ~ Main Phone: 703.648.8000 TAC Contact Information: Phone: 703.648.8151 ~ Email: tac@idirect.net ~ Web site: tac.idirect.net iDirect Government™, created in 2007, is a wholly owned subsidiary of VT iDirect and was formed to better serve the U.S. government and defense communities. Company web site: www.idirectgt.com/ ~ Main Phone: 703.648.8118 TAC Contact Information: Phone: 703.648.8111 ~ Email: tac@idirectgt.com ~ Web site: tac.idirectgt.com Document Name: HI_LBA_Guide_iDX_4.2.x_T0001018_RevA_4_12_18.pdf Link Budget Analysis Guide, iDX Release 4.2 iii Revision History The following table shows all prior revisions of the document. The most recent revision is available on the Technical Assistance Center (TAC) Web site. Refer to Getting Help on page viii for TAC access information. Revision Date Released Reason for Change(s) A 16-April-2018 Initial Release iv Link Budget Analysis Guide, iDX Release 4.2 Link Budget Analysis Guide, iDX Release 4.2 v Disclaimer While iDirect, Inc. strives to make the information in this document as accurate as possible, iDirect makes no claims, promises, or guarantees about the accuracy, completeness, or adequacy of the contents, and expressly disclaims liability for errors and omissions. No warranty of any kind, whether implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, or fitness for a particular purpose, is given with respect to the contents of this document. VT iDirect, Inc. reserves the right to change or update this document at any time. vi Link Budget Analysis Guide, iDX Release 4.2 Link Budget Analysis Guide, iDX Release 4.2 vii Contents Revision History .................................................................................. iii Disclaimer .......................................................................................... v Contents .......................................................................................... vii List of Figures ..................................................................................... ix List of Tables ...................................................................................... xi About .............................................................................................. xiii Purpose ................................................................................................... xiii Target Audience ......................................................................................... xiii Getting Help ............................................................................................. xiii 1 Downstream .................................................................................. 1 DVB-S2 ACM Downstream ................................................................................ 1 Transmit Hub Line Cards ................................................................................. 5 Multi-Protocol Encapsulation Mode Downstream Configuration .................................. 5 2 Upstream ...................................................................................... 7 SCPC Upstream Carrier Performance Specifications ................................................ 7 TDMA Upstream Carrier Performance Specifications ............................................. 10 TDMA Upstream Modes and Throughput Limitations .............................................. 14 3 System Guidelines ......................................................................... 17 DVB-S2 ACM System Guidelines ....................................................................... 17 Adaptive TDMA System Guidelines ................................................................... 19 viii Link Budget Analysis Guide, iDX Release 4.2 Link Budget Analysis Guide, iDX Release 4.2 ix List of Figures Figure 1: Downstream Performance Graph for DVB-S2 .................................................. 4 Figure 2: Upstream SCPC Performance Graph (170 and 438 Bytes Payload) ......................... 9 Figure 3: Upstream Performance Graphs for Non-SS and SS Modes .................................. 13 x Link Budget Analysis Guide, iDX Release 4.2 Link Budget Analysis Guide, iDX Release 4.2 xi List of Tables Table 1. DVB-S2 Modem Performance Limit by Remote Model Type .................................. 1 Table 2. SNR Performance Limit for SCPC Carriers ....................................................... 7 Table 3. SNR Performance Limit for TDMA Carriers .................................................... 10 xii Link Budget Analysis Guide, iDX Release 4.2 Link Budget Analysis Guide, iDX Release 4.2 xiii About Purpose The purpose of this guide is to provide system and network engineers with satellite modem performance parameters necessary to conduct link budget analysis and accordingly plan system resources for implementing an iDirect network. The information presented in this guide is specific to the iDirect Evolution series of hub and remote products for networks associated with Evolution 4.2 Software Release. Target Audience The intended audience for this guide are network engineers who are planning the integration of the iDirect hub equipment in an existing teleport or Earth station. Getting Help The iDirect Technical Assistance Center (iDirect TAC) and the iDirect Government Technologies Technical Assistance Center (iDirectGov TAC) are available to provide assistance 24 hours a day, 365 days a year. Software user guides, installation procedures, an FAQ page, and other documents that support iDirect and iDirect Government products are available on the respective TAC Web site. IDirect Contact Information  Web site: http://www.idirect.net  Telephone: (703) 648-8151  E-mail: tac@idirect.net For sales or product purchasing information, contact iDirect Corporate Sales at:  Telephone: (703) 848-8000  E-mail: sales@idirect.net xiv Link Budget Analysis Guide, iDX Release 4.2 iDirect Government Contact Information  Web site: http://www.idirectgt.com/  Telephone: (703) 648-8111  E-mail: tac@idirectgt.com iDirect and iDirect Government strive to produce documentation that are technically accurate, easy to use, and helpful to our customers. Please assist us in improving this document by providing feedback. Send comments to:  iDirect: techpubs@idirect.net  iDirect Government: techpubs@idirectgt.com Link Budget Analysis Guide, iDX Release 4.2 1 1 Downstream This chapter describes Downstream Carrier specifications for the Evolution 4.2 network and contains the following sections:  DVB-S2 ACM Downstream  Transmit Hub Line Cards  Multi-Protocol Encapsulation Mode Downstream Configuration DVB-S2 ACM Downstream This section summarizes the SNR threshold required for downstream link budget analysis of DVB-S2 carriers configured for Adaptive Coding and Modulation (ACM). The modem performance threshold for Evolution e8350/e800/e850mp Series Remotes is provided in Section 1 of Table 1; the same is provided Evolution 950mp/9350/900 Series Remotes in Section 2 of Table 1. 32ASPK operation is supported only in DLC-T Hub line card models and Evolution 950mp/9350/900 Series Remote models. The SNR threshold of these remotes for 32APSK MODCODs is listed under Section 2 of Table 1 . Table 1. DVB-S2 Modem Performance Limit by Remote Model Type Symbol Rate 1 to 45 Msps Carrier Scheme DVB-S2, ACM, Short Frame, Pilots On, Filter roll off 1 (α) of 5, 10, 15 and 20% Modulation/FEC Modulation: QPSK/8PSK/16APSK/32APSK FEC: LDPC/BCH Minimum Carrier Spacing 1 (1+α)*Symbol Rate Section 1: SNR Threshold for Evolution e8350/e800/e850mp Series Remotes MODCOD Index MODCOD Type Payload bits per Frame (Kb) Symbols per Frame (Ns) Spectral Efficiency 2 (bps) Eb/No for QEF 3, 4 (dB) C/N for QEF 3, 4 (dB) 1 QPSK Rate 1/4 2960 8370 0.35 2.3 -2.2 2 QPSK Rate 1/3 5120 8370 0.61 1.3 -0.8 2 Link Budget Analysis Guide, iDX Release 4.2 3 QPSK Rate 2/5 6200 8370 0.74 1.5 0.2 4 QPSK Rate 1/2 6920 8370 0.83 1.7 0.9 5 QPSK Rate 3/5 9440 8370 1.13 2.2 2.7 6 QPSK Rate 2/3 10520 8370 1.26 2.5 3.5 7 QPSK Rate 3/4 11600 8370 1.39 3.0 4.4 8 QPSK Rate 4/5 12320 8370 1.47 3.4 5.1 9 QPSK Rate 5/6 13040 8370 1.56 3.7 5.6 10 QPSK Rate 8/9 14120 8370 1.69 4.3 6.6 12 8PSK Rate 3/5 9440 5598 1.69 4.0 6.3 13 8PSK Rate 2/3 10520 5598 1.88 4.7 7.4 14 8PSK Rate 3/4 11600 5598 2.07 5.3 8.5 15 8PSK Rate 5/6 13040 5598 2.33 6.3 10.0 16 8PSK Rate 8/9 14120 5598 2.52 7.3 11.3 18 16APSK Rate 2/3 10520 4212 2.50 5.6 9.6 19 16APSK Rate 3/4 11600 4212 2.75 6.4 10.8 20 16APSK Rate 4/5 12320 4212 2.92 6.8 11.5 21 16APSK Rate 5/6 13040 4212 3.10 7.5 12.4 22 16APSK Rate 8/9 14120 4212 3.35 8.3 13.6 Section 2: SNR Threshold for Evolution 950mp/9350/900 Series Remotes MODCOD Index MODCOD Type Payload bits per Frame (Kb) Symbols per Frame (Ns) Spectral Efficiency 2 (bps) Eb/No for QEF 3,4 (dB) C/N for QEF 3,4 (dB) 1 QPSK Rate 1/4 2960 8370 0.35 2.8 -1.7 2 QPSK Rate 1/3 5120 8370 0.61 1.4 -0.7 3 QPSK Rate 2/5 6200 8370 0.74 1.4 0.1 4 QPSK Rate 1/2 6920 8370 0.83 1.8 1.0 5 QPSK Rate 3/5 9440 8370 1.13 2.0 2.5 6 QPSK Rate 2/3 10520 8370 1.26 2.3 3.3 7 QPSK Rate 3/4 11600 8370 1.39 2.9 4.3 8 QPSK Rate 4/5 12320 8370 1.47 3.2 4.9 9 QPSK Rate 5/6 13040 8370 1.56 3.6 5.5 10 QPSK Rate 8/9 14120 8370 1.69 4.3 6.6 12 8PSK rate 3/5 9440 5598 1.69 4.0 6.3 13 8PSK Rate 2/3 10520 5598 1.88 4.7 7.4 Link Budget Analysis Guide, iDX uploads/s1/ idirect-lba-guide.pdf