Implementation Overview: S5066 Edition 2 Prototype

1
Implementation OverviewS5066 Edition 2
Prototype

• prepared by
• Donald G. Kallgren, Dr. Michael Street and
  Maarten Gerbrands
• presented to
• the High Frequency Industry Association
• 19 July 2007
• Rome, Italy

2
Agenda

• Implementation Overview
• hardware environment
• software environment
• Software Overview
• code structure and size
• availability
• capability/PICs
• Relation to other NC3A efforts
• SDR
• code repository
• VHF / UHF Waveform Development
• Summary

3
CORBA-ized S5066 Implementation

• modified earlier hfstack design and
  implementation
• separate SW modules for hfstack and route56
  synchronous serial interface
• synchronous serial interface further abstracted
  as a CORBA resource in accordance with SCA design
  principles

• CORBA interface specification
• abstract object-oriented interface applicable to
  any modem
• remains constant as modem implementations change

• towards an SDR modem implementation
• initial designs encapsulate route56 driver
  interface to external modem via
  synchronous-serial port
• ultimately replaced by SDR modem
• operates as independent
• HF modem server, registered with CORBA name
  server
• HF statck, which checks CORBA registry for
  available HF modem servers

4
Hardware Packaging as multi-band wireless router

• MICROSPACE MPCX47 platform

16 cm
6.6 cm
30 cm

• Back View

Synch/Serial Interface to external HF Modem
Antenna Interfaces for embedded WiFi, GSM/GPRS,
GPS
5
Synchronous Serial Interface Hardware

• Currently limited to modified Route56 driver
  for Z16C32 chipset
• Driver Modifications
• implement BiSYNC protocol w/ 0x90EB sync word
• hardware-assisted sync-word search

• Low-Profile PCI form factor
• Sealevel Systems ACB-Ultra.LPCI

• PC-104 form-factor
• Sealevel Systems ACB-104-Ultra

6
Capabilities Implementation of key (but NOT
all) S5066E2 features
7
Software Overview

• Total Redesign of earlier prototype-SW
  development for S5066E2
• Linux 2.6 kernel, RedHat Fedora Core 6
• all POSIX / C STD implementation
• eliminates earlier prototypes dependence on
  KDE/Qt libraries
• Modularized/Object-Oriented Code

8
Source-Code Availability

• software repository established
• https//s5066.nc3a.nato.int/S5066loginreq/software
  /
• accessible to NATO/PfP/CFBLNet nations with
  account / password, apply at https//s5066.nc3a.
  nato.int/authrequest.php
• SRPMs available
• hfstack, choose one of
• hfstack-0.3.10-00.src.rpm 470K
• hfstack-sdr-0.3.10-00.src.rpm 470K
• serial-port driver
• kernel-module-route56-0.1.3-9.src.rpm 30K
• libnc3a-0.5.01-00.src.rpm 540K
• sisetherclient-0.2.10-00.src.rpm 319K
• other (optional utilities)
• sisnetsim-0.4.00-0.src.rpm 313K
• sispipe-0.1.19-15.src.rpm 304K
• Licensing
• GPL / LGPL for inherited Linux code
• BSD for NC3A-generated code
• additions/contributions/corrections to the code
  in the NC3A repository are not required (but
  would be appreciated! by all!)

9
Source-Code Browser

• Browse-able Code
• generated directly from the code using Doxygen
  tool
• code-changes directly reflected in browser files
  whenever the SW is re-built
• various reports available
• viewable source code
• inheritance and dependency diagrams
• Class-, Function-, variable, lists
• Class-overview w/ embeddable source code and
  called-by/call-lists

• browse-able code documentation at
  ltproject_dirgt/docs/html/index.html
• documentation outputs controllable by modifying
  file ltproject_dirgt/docs/doxygen/doxygen.conf

10
Class Reference (1) e.g., DPDU Class Inheritance
and code structure
hyper-linked inheritance diagrams
hyper-linked file reference
expanded/interpreted code structure and embedded
programmer comments
documentation page includes embedded source code
11
Relationship to other NC3A/NATO Developments

• support to SDR project
• GPP-based code of NATO STANAGs
• development roadmap for HF / VHF / UHF SDR
  software
• exploration of low-cost base waveform
  implementations
• explore mechanics / legalisms of a NATO sponsored
  code repository

12
NATO aims for SDR

• as a development platform
• to interoperate with legacy systems
• to share waveforms and enable interoperability

13
SDR as a development platform

• New waveform for land tactical domain
• A new, efficient, sharable narrow band is being
  developed
• Current V/UHF waveforms are not NNEC ready
• Using work conducted by several nations
• SDR provides a fast, flexible development
  platform
• National work on layers 1, 2 and 4
• All developed in software
• Low-cost NC3A SDR platform to host national work
• Fill in gaps to produce a working waveform
• Resulting waveform / software can be shared
• With NATO / PfP
• Following STANAG 5066 model for collaborative
  development
• Improved dissemination and implementation

14
NC3A development

• NC3A has established an SDR development system
• Host system for multi-national effort
• National developments offered to NATO
• NC3B request contributions to w/f development
• From active programmes to develop waveform
  components which can be shared
• NC3A hosting first meeting in early July for
  nations
• Coordination of SDR development
• Multiple nations involved
• RTO provides a useful forum for technical
  cooperation
• NC3A support to SDR UG provides coordination

15
SDR to interoperate with legacy

• SDR is the choice for many national procurements
• Current and future
• Software definitions of legacy waveforms
• will provide backward compatibility
• can be shared easily
• ACT funded EPOW at NC3A
• Coordination with SDRUG via NC3A support to NC3B

16
NC3A and existing radio standards

• SCA based version of STANAG 5066
• Based on SCA standard for SDR
• Easily ported to SCA compliant platforms
• (and most platforms are SCA based)
• Tested on-air during STANAG 5066 trials at
  Combined Endeavor
• Software has no IPR or security restrictions
• RF data acquisition during Combined Endeavor
• Software modules developed for RF receive
• Real RF signals available in the lab for
  development and test
• Developing SCA-based versions of
• US Mil-Std 188-141A for 2nd generation ALE
• STANAG 4539 in conjunction with CRC
• STANAG 4205c UHF
• (RTO developing SCA-based STANAG 4285)
• SCA Software Communications Architecture

17
NC3A and software / waveform sharing

• Waveform / software definition sharing
• Benefits from a standard format
• Eases porting
• SCA the likely candidate
• But SCA does not address all aspects
• Security still needs much work
• Technical work needed to address multi-national
  issues
• Waveform sharing mechanisms
• Address technical aspects of NC3B business model
• Lessons learned from NC3A SDR testbed and
  multi-national waveform development work
• NC3A updates to SDRUG

18
Activities for RTO

• Multi-national technical work needed on SCA
• Address issues arising for non-US work e.g.
  security
• Single-nation issues fixed e.g. JTRS
• RTO planned activities will identify (and solve
  ?) issues
• Technicalities of software sharing
• Multi-national SDR collaboration via RTO can
  provide benefits for operational sharing /
  interoperability
• Building a waveform library
• NC3A work on legacy standards in SCA form
• RTO plans will add to the library content

19
SDR Testbed

• Low-cost / low-profile approach to testbed
• GNU-Radio GPP DSP implementations
• http//gnuradio.org/trac
• Universal Software Radio Peripheral (USRP)
• http//www.ettus.com/downloads/ettus_broch_trifold
  _v3b.pdf

• USRP Motherboard
• Four 64 MS/s 12-bit A/D Converters
• Four 128 MS/s 14-bit D/A Converters
• Four programmable digital downconverters
• Two programmable digital upconverters
• High-speed USB 2.0 interface (480 Mb/s)
• Signal processing capability to 16 MHz wide

20
SDR Issues under consideration

• relevance of GNU-Radio to SCA and vice versa
• GNU-radio based on
• Python scripts as specification of the
• does implementation of a Base Waveform
  specification (i.e., a functional exemplar of a
  waveform) for SDR even require a standard
• may be non-real-time
• must be open source
• presumed to provide unambiguous specification,
  design, and guidance to Target Waveform
  implementers
• its Target Waveforms that require SDR-code
  portability!

21
Summary

• NC3A developed S5055E2 prototype SW code is
  available for download, review, comment, use
• software repository established
• https//s5066.nc3a.nato.int/S5066loginreq/software
  /
• accessible to NATO/PfP/CFBLNet nations with
  account / password, apply at https//s5066.nc3a.
  nato.int/authrequest.php
• Initial entires in NC3A SDR software repository
• provides initial support/exploration-of-use for
  SDR SCA
• to be expanded to support NATO efforts in
  developing a VHF/UHF STANAG