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Johnathan CorganCorgan Labs
Tom RondeauRondeau Research
October 2013
GNU Radio Conference 2013Opening Information
Year in Review
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October 2013 2
Conference Information
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October 2013 3
Huge Thanks to the Sponsors
PLATINUM GOLD
TRAVEL
Rondeau Research
OpenSDR
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October 2013 4
Internets and Things
● Internet
– WiFi is available, but we're pushing the limits.
● SSID: SpacewithaSoul_Guests● Password: "spaceguest"
● Things
– Conference agenda and everything else:
● http://www.trondeau.com/grcon13● Twitter hashtag: #grcon13.● Presentations will be made available online soon.
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October 2013 5
Boston
● Getting around
– Fairly compact city
– Suggest taking public transportation to get around
– The T (subway) system is convenient for our needs
● http://www.mbta.com/schedules_and_maps/subway/
● Red Sox Postseason
– Red Sox will be in the post season.
– ALDS game 1 Oct. 4 will be at Fenway.
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October 2013 6
Space with a Soul
● The building is accessible from 8:30am to 6:30pm.
● Building Layout:
● Please be respectful of people working in offices.
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October 2013 7
Opening Reception: Anthem 7:30PM Tue
● Located in Faneuil Hall
– 101 South Market Building
– Blue Line: Aquarium; Orange/Green Line: Haymarket
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October 2013 8
GSoC Dinner: City Landing, 7:45PM Wed
● Located on the Long Wharf
– 255 State Street
– Right next to Aquarium stop on the Blue line
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October 2013 9
Hardware Giveaway: End of Conf. Raffle
● Ettus Research USRP B200
● Fairwaves UmTRX
● Great Scott Gadgets HackRF Jawbreaker
● Lime Micro MyriadRF (x2)
● Loctronix A2300
● nuand BladeRF x40 and x115
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October 2013 10
Announcements
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October 2013 11
GSoC Participation/Results
● Aneela Yasmeen
– Improving GNU Radio Companion (Tue 11:30AM)
● Manu T S
– LDPC and more FEC (Tue 12PM)
● Tracie Perez
– Implementation of LDPC (Tue 1:30PM)
● Shashank Gaur
– 802.11a/n/g Receiver (Tue 2PM)
● Jonathon Pendlum
– FPGA Coprocessing with Xilinx Zynq (Tue 2:30PM)
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October 2013 12
DARPA Spectrum Challenge
● http://www.darpa.mil/spectrumchallenge/
● 90 teams signed up; 18 in the preliminary challenge
● Prelim held Sept 1112
● Northeastern and Vanderbilt win top honors
● Ivan Seskar from WINLAB will give us more details tomorrow.
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October 2013 13
GNU Radio Events
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October 2013 14
GRHACK12 @ Ettus Research Nov 2012
● Tons of new features integrated into GNU Radio
– Message passing
– ControlPort
– Improved OFDM example
– Metadata files
– VOLK work● gnuradio.org/redmine/projects/gnuradio/wiki/Hackfest1211
● One of our most successful events
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October 2013 15
GRHACK13 @ Virginia Tech June2013
● The start of a lot of new, good projects
– Lots of work on embedded support
– FPGA and DSP coprocessor discussions
– Lots of bug fixes, hardening of 3.7● gnuradio.org/redmine/projects/gnuradio/wiki/Hackfest1306
● Sponsored by Hume Center of Virginia Tech
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October 2013 16
Other Conferences w/GNU Radio Activity
● WinnForum 2013
● Wireless@VT Symposium, June 2013
● NEWSDR
● SRIF @ Hong Kong August 2013
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October 2013 17
Community Growth
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October 2013 18
Mailing List Traffic
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October 2013 19
Git Checkouts (10log10
(checkouts))
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October 2013 20
Web Site Accesses (5log10
(hits))
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October 2013 21
Developer Activity Growth
● 2243 new commits to source code tree since last conference, by 45 unique contributors (up from 32) in 10 different countries
● Developer growth fueled in large part by GitHub pull system
– 78 pull requests, nearly all merged
● Cleanup and new emphasis on Redmine bug reporting system is attracting new developers and patches
● Hackfest events major source of new feature starts
– Plan is to have 23 per year (incl. at GRCON)
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October 2013 22
Formalized Project Roles
● gnuradio.org/redmine/projects/gnuradio/wiki/Organization
– Maintainer, Project Leader: Tom Rondeau
– CoMaintainer, Release Manager: Johnathan Corgan
– Community Organizer: Martin Braun
– Bug Tracker Organizer: Ben Reynwar
– GNU Radio Conference Organizer: John Malsbury
– Debian Packaging: A. Maitland Bottoms
– Embedded ARM Packaging: Philip Balister
– MacOS Packaging: Michael Dickens
– Windows Packaging: Nicholas Corgan
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October 2013 23
Distribution/Installation Updates
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October 2013 24
PyBOMBS Build Manager● http://gnuradio.org/pybombs
● New GNU Radio install management system for resolving dependencies and pulling in outoftree projects.
● Tutorial Thu 10AM by Tim O'Shea
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October 2013 25
Mac OS X Updates via MacPorts
● Maintained by Michael Dickens
● Recent work to simplify install and correct other packages has been completed
– Ongoing work with QA tests and audio sink/source
● Active support GNU Radio 3.7.1 on Mac OS X 10.6 through 10.8
● sudo port install gnuradio +full is all that is needed once MacPorts is installed on machine
● Almost all GNU Radio features are enabled
– Still testing perf counters and ControlPort
● See: http://gnuradio.org/redmine/projects/gnuradio/wiki/MacInstall
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October 2013 26
Debian Packaging Updates
● Maintained by Maitland Bottoms
● GNU Radio 3.7.1 has made it into the unstable repository
● Binary installation plus development headers via aptget, suitable for full outoftree module development
● GNU Radio project is coordinating to merge up downstream patches/bug fixes
● Debian feeds down to many derivative distributions, including Ubuntu
● Track status: http://packages.qa.debian.org/g/gnuradio.html
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October 2013 27
Ubuntu Binary Installation via PPA
● Developed by Alexandru Csete to support binary installations of the gqrx radio receiver
● Provides binary install via aptget on Ubuntu 12.04, 12.10, 13.04, and 13.10 for GNU Radio v3.7.0
● Binary only development, so suitable for GRC and Python script based development, but not custom blocks
– Needs dev packages for C++ headers
● Fills gap with Ubuntu maintaining ancient GNU Radio releases
● See https://launchpad.net/~gqrx/+archive/releases
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October 2013 28
LiveUSB Environment by Ettus Research
● Portable SDR environment based on Ubuntu 12.10 on 16 GB USB 3.0 flash drive
● Supports development with GNU Radio 3.6.5 and all Ettus Research products
● Many 3rdparty applications
● Excellent for demonstrations and training
```
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October 2013 29
LiveDVD Image by Corgan Labs● Bootable DVD image based on Ubuntu 12.04.3 LTS 64bit
● Contains full GNU Radio 3.7.1 installation and hardware support for:
– Ettus Research USRP product family
– HackRF Jawbreaker (via grosmosdr)
– RTLSDR (via grosmosdr)
– FunCUBE Dongle Pro+ (via grosmosdr) (untested)
– nuand bladeRF (via grosmosdr) (untested)
● Suitable for demonstration, testing, and experimentation in restricted environments
● See:http://gnuradio.org/releases/gnuradio/iso
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October 2013 30
DSP Acceleration and ARM SoC Support
● This is an area of growing interest and increasingly interesting (and affordable) hardware
● We have a few talks during the con from:
– Jonathon Pendulum (Tue 2:30PM)
– Justin Ford (Wed 12PM)
– Moritz Fischer (Wed 2:30PM)
– Matt Ettus (general remarks)
● Big area of discussion during our last HackFest in June
● Embedded OS support and GNU Radio packaging managed by Philip Balister
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October 2013 31
GNU RadioFramework Architecture
Updates
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October 2013 32
Asynchronous Message Passing/PDUs
● Adds asynchronous, outofband messaging to existing dataflow streaming architecture
● Suitable for development of state machines, control/MAC layer protocols, and interfacing with the external world
● Design and implementation by Josh Blum, Johnathan Corgan, Tom Rondeau, and Tim O'Shea
● Tutorial Wed 4PM by Johnathan Corgan
MSG MSG
IN OUTDSP
Block
OUT
MSG
SourceBlock MSG
IN
MSG
OUTDSP
Block MSG
INSink
Block
MSGMSG
MessageBlock
MSG MSG
Data Flow
Control Flow
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October 2013 33
Pythonbased Block Design
class convolve(gr.sync_block): def __init__(self): gr.sync_block.__init__( self, name = "convolve", in_sig = [numpy.float32], out_sig = [numpy.float32]
) self._taps = [1, 0, 0, 0] self.set_history(len(self._taps))
def work(self, input_items, output_items): output_items[0][:] = numpy.convolve(input_items[0], self._taps, mode='valid') return len(output_items[0])
● Design by Josh Blum
● Allows rapid prototyping of streaming algorithms, but sacrifices performance vs. native C++ blocks
● Supports message passing, interface to outside
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October 2013 34
Event Logging Framework
● Design/implementation by Tom Rondeau and Mark Plett
● Provides a uniform method to communicate info, warnings, and errors to users (vs. block specific)
● Easily configurable
– Turn event logging output on/off
– Redirect to console, files, network devices, etc.
● Convenience methods allow easy access when writing custom C++ blocks
GR_LOG_INFO(d_logger, "Some info about the block");
GR_LOG_WARN(d_debug_logger, "Some warning about the block");
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October 2013 35
Control Port Remote Framework
● Command, Control & Discovery Interface
● Multiple GNU Radio apps controlled by the same program
● Multiple programs viewing a single app
● Tutorial Thu 2PM by Tom Rondeau
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October 2013 36
Performance Monitoring
● Measures and stores statistics for each block
● Gettable over ControlPort for performance analysis and flowgraph health monitoring
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October 2013 37
Block Processor Affinity
● Tie blocks to a single or a group of processors/cores.
● More control than allowing the OS to do this for us
● Tutorial Thu 9AM by Tom Rondeau
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October 2013 38
New DSP Capabilities
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October 2013 39
OFDM PHY Block Set
● Design and implementation by Matt Ettus, Martin Braun and Ben Reynwar
● Tutorial Thu 4:30PM by Martin Braun
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October 2013 40
GNU Radio Filter Designer Integration
● Implemented by Sreeraj Rajendran as part of GSoC 2012
● Generates FIR and IIR filters
● Can launch it and pull back results into Python in real time
● Future directions:
– Ability to manipulate in GRC
– Support for fixedpoint format
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October 2013 41
Channel Model Additions/Updates
● New fading channel simulation blocks by Tim O'Shea
– Rayleigh/Rician
– Doppler spread
– PDPbased simulations
– Tutorial Thu 1:30PM
● Dynamic Channel model (channel_model2)
– Takes in functions for frequency and time offsets
● Hardware impairment models
– Matt Ettus Tutorial GRCON11
– Phase noise, IQ imbalance, 2nd & 3rd order distortions
● Allows more sophisticated endtoend simulations
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October 2013 42
Development Environment Updates
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October 2013 43
GNU Radio Mod Tool
● Easily created OOT projects and add blocks$ gr_modtool help
Usage:gr_modtool.py <command> [options] Run <command> with the given options.gr_modtool.py help Show a list of commands.gr_modtool.py help <command> Shows the help for a given command.
List of possible commands:Name Aliases Description=====================================================================remove rm,del Remove block (delete files and remove Makefile entries)add insert Add block to the outoftree modulenewmod nm,create Create a new outoftree module
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October 2013 44
GnuradioConfig.cmake
● Recommended way to find and link against GNU Radio in OOT projects
● Allows user to specify the needed components and checks they are all there.
● Set the APIcompatible version to indicate which GNU Radio version is required.
set(GR_REQUIRED_MODULES RUNTIME BLOCKS FILTER)
find_package(Gnuradio 3.7.0)
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October 2013 45
GNU Radio Companion Bus Ports
● Simplifies GNU Radio Companion connections for blocks with large numbers of inputs and outputs
● Developed by Nick McCarthy during work for new FECAPI blocks
● Introduced in GNU Radio 3.7.1
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October 2013 46
New Hardware Announcements
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October 2013 47
Ettus Research USRP B200/210
● Continuous TX/RX coverage from 70 MHz to 6 GHz, 1x1 (B200) or 2x2 MIMO (B210)
● Up to 56 MHz continuous realtime I/Q bandwidth
● USB 3.0 bus powered
● GNU Radio support via gruhd and UHD softwarefrom Ettus Research
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October 2013 48
Great Scott Gadgets HackRF Jawbreaker
● Halfduplex TX/RX coverage from 30 MHz to 6 GHz
● Up to 20 MHz continuous I/Q bandwidth
● USB 2.0 Bus powered
● GNU Radio support via grosmosdr driver
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October 2013 49
Fairwaves UmTRX
● Dualchannel TX/RX coverage from 300 MHz to 3.8 GHz
● Optimized for GSM applications with OsmoBTS and OpenBSC
● Host connection via GbE
● GNU Radio support via gruhd and modified open source UHD software
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October 2013 50
nuand bladeRF
● Fullduplex TX/RX 2x2 MIMO coverage from 300 MHz to 3.8 GHz
● Up to 28 MHz continuous I/Q bandwidth
● USB 3.0 bus powered
● GNU Radio support via grosmosdr driver
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October 2013 51
FUNcube Dongle Pro+
● RXonly coverage,150 KHz240 MHz and 420 MHz1.9 GHZ
● 192 KHz realtime I/Q bandwidth
● Design by Howard Long, G6LVB
● GNU Radio support via 3rdparty grosmosdr driver
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October 2013 52
Other Vendors w/GNU Radio support
● Other vendors have released or planned support for their hardware in GNU Radio via 3rdparty code
– Nutaq
– MyriadRF
– Epiq Solutions
– Per Vices
– Loctronix (presentation Tue 4PM)
● GNU Radio has become the defacto deployment software for new SDR hardware
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October 2013 53
GNU RadioProject Infrastructure
Updates
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October 2013 54
CloudFlare/Google Analytics
● In May 2013 the GNU Radio project switched to using the CloudFlare content distribution network (CDN) for website and git
– Up to 1.1M hits/day using 1 GB bandwidth
– ~20% is webcrawler traffic
● Reduction in actual server hits and bandwidth of 50%
● Automatic insertion of Google Analytics hooks
– Lets us track site usage and statistics
– Most trafficked part of website is installation pages on Wiki
● Realtime mitigation of DDoS attacks and webvulnerabilities
![Page 55: GNU Radio Conference 2013 Opening Information Year in Review · Continuous TX/RX coverage from 70 MHz to 6 GHz, 1x1 (B200) or 2x2 MIMO (B210) Up to 56 MHz continuous realtime I/Q](https://reader034.vdocument.in/reader034/viewer/2022042312/5edae9b609ac2c67fa688273/html5/thumbnails/55.jpg)
October 2013 55
Coverity Scan Static Analysis
● Automated static analysis testing ofGNU Radio code base for defects andvulnerabilities, such as:
– Memory leaks
– Buffer overflows
– Control flow issues
– Error handling issues
● Weekly automated analysis and upload from GNU Radio servers to Coverity site for reporting via Jenkins integration server
● Managed by Philip Balister
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October 2013 56
Future Directions
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October 2013 57
MAC/Control Layer Protocol Development
● GNU Radio has traditionally excelled at high speed, realtime PHY development with streaming dataflow architecture
● New features in last two major releases are enabling more sophisticated control logic
– Stream tagging for passing metadata through signal chain
– Asynchronous messaging for outofband signaling
– PDU (data/metadata) message format support
– Messageonly blocks
● The emphasis over the next release cycle is integrating these features into existing block libraries and building higher level protocols
● Let's make developing sophisticated, realworld software radios easier than ever
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October 2013 58
FECAPI Development
● FEC support has been a major problem for GR
– Fundamentally hard problem to generalize all the different formats, types, options
● FECAPI provides an API to craft the FEC encoders and decoders and apply them to GNU Radio data streams easily/uniformly
● Allowing more interest and support for new FEC tools
– GSoC projects on LDPC codes
● Will enable more robust digital communications (a developing theme in GNU Radio)
● Recently added soft decision bits support in GNU Radio
● Tutorial Thu 2:30PM by Nick McCarthy
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October 2013 59
Unified GNU Radio Front End (grrfe)
● New, experimental module under development to more easily support multiple SDRs in applications
● Moves deviceindependent code into common GNU Radio sink and source blocks
– Stream interface work function/metadata handling
– Asynchronous message ports for PDUs and status/errors
– Propertiesbased interface for configuration and control
● Lowlevel pluggable API for devicespecific modules
– Property tree handlers, streaming sample I/O, event interface
● Applications will be able to use multiple SDRs via configuration file or through discovery/enumeration
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October 2013 60
Building Blocks vs. Applications
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October 2013 61
But what about those applications?
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October 2013 62
What are we doing about it?
● Cleaner code, interface with 3.7.
● Better, more integrated tools.
● Providing improved support for OOT projects.
● Improved documentation.
● Better bug tracking support.
● Many new features that you'll see this week.
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October 2013 63
What can you do?
● Participate and speak up!
– Use the mailing list.
– Report and keep up with bugs on the bug tracker.
– Improve and add to gnuradio.org.
– Join us for the monthly developers' calls.
● Keep developing!
– Continue posting projects on github/CGRAN, etc.
– Add your project to PyBOMBS.
– Feed back new contributions to GNU Radio.
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