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Iris Software Radio Architecture
Paul Sutton
2nd February 2014
FOSDEM
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Outline
• Iris Overview
• Iris Architecture
• Controllers
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What is Iris?
Iris Overview
![Page 4: Iris Software Radio Architecture · • A GPP-based software radio architecture – Fundamental block is the component • Most basic configuration : – A source component – A](https://reader035.vdocuments.mx/reader035/viewer/2022071216/60475007fcc2a01bbe3f753a/html5/thumbnails/4.jpg)
What is Iris?
Iris Overview
A Software RadioArchitecture
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What is Iris?
Iris Overview
A Software RadioArchitecture
Reconfigurable
![Page 6: Iris Software Radio Architecture · • A GPP-based software radio architecture – Fundamental block is the component • Most basic configuration : – A source component – A](https://reader035.vdocuments.mx/reader035/viewer/2022071216/60475007fcc2a01bbe3f753a/html5/thumbnails/6.jpg)
What is Iris?
Iris Overview
A Software RadioArchitecture
Reconfigurable
GPP – Based (primarily)
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What is Iris?
Iris Overview
A Software RadioArchitecture
Reconfigurable
Component-Based
GPP – Based (primarily)
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What is Iris?
Iris Overview
A Software RadioArchitecture
Reconfigurable
Component-Based
C++
GPP – Based (primarily)
![Page 9: Iris Software Radio Architecture · • A GPP-based software radio architecture – Fundamental block is the component • Most basic configuration : – A source component – A](https://reader035.vdocuments.mx/reader035/viewer/2022071216/60475007fcc2a01bbe3f753a/html5/thumbnails/9.jpg)
What is Iris?
Iris Overview
A Software RadioArchitecture
Reconfigurable
Component-Based
Portable
C++
GPP – Based (primarily)
![Page 10: Iris Software Radio Architecture · • A GPP-based software radio architecture – Fundamental block is the component • Most basic configuration : – A source component – A](https://reader035.vdocuments.mx/reader035/viewer/2022071216/60475007fcc2a01bbe3f753a/html5/thumbnails/10.jpg)
What is Iris?
Iris Overview
A Software RadioArchitecture
Reconfigurable
Component-Based
Portable
C++
GPP – Based (primarily)
Extensible
![Page 11: Iris Software Radio Architecture · • A GPP-based software radio architecture – Fundamental block is the component • Most basic configuration : – A source component – A](https://reader035.vdocuments.mx/reader035/viewer/2022071216/60475007fcc2a01bbe3f753a/html5/thumbnails/11.jpg)
What is Iris?
Iris Overview
A Software RadioArchitecture
Reconfigurable
Component-Based
Portable
C++
GPP – Based (primarily)
Extensible
![Page 12: Iris Software Radio Architecture · • A GPP-based software radio architecture – Fundamental block is the component • Most basic configuration : – A source component – A](https://reader035.vdocuments.mx/reader035/viewer/2022071216/60475007fcc2a01bbe3f753a/html5/thumbnails/12.jpg)
What can I do with Iris?
Iris Overview
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What can I do with Iris?
Iris Overview
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What can I do with Iris?
Iris Overview
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What can I do with Iris?
Iris Overview
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Iris Overview
What can I do with Iris?
• Jacek Kibilda
• COST Short-Term Scientific Mission
• 2 weeks (no prior knowledge of Iris)
• DSA demo (primary user avoidance)
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Iris Overview
What can I do with Iris?
• Jacek Kibilda
• COST Short-Term Scientific Mission
• 2 weeks (no prior knowledge of Iris)
• DSA demo (primary user avoidance)
Basestation
Mobile Station
Mobile Station
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Iris Overview
What can I do with Iris?
• Jacek Kibilda
• COST Short-Term Scientific Mission
• 2 weeks (no prior knowledge of Iris)
• DSA demo (primary user avoidance)
Basestation
Mobile Station
Mobile Station
![Page 19: Iris Software Radio Architecture · • A GPP-based software radio architecture – Fundamental block is the component • Most basic configuration : – A source component – A](https://reader035.vdocuments.mx/reader035/viewer/2022071216/60475007fcc2a01bbe3f753a/html5/thumbnails/19.jpg)
Iris Overview
What can I do with Iris?
• Jacek Kibilda
• COST Short-Term Scientific Mission
• 2 weeks (no prior knowledge of Iris)
• DSA demo (primary user avoidance)
Basestation
Mobile Station
Mobile StationControl
Primary
Data
![Page 20: Iris Software Radio Architecture · • A GPP-based software radio architecture – Fundamental block is the component • Most basic configuration : – A source component – A](https://reader035.vdocuments.mx/reader035/viewer/2022071216/60475007fcc2a01bbe3f753a/html5/thumbnails/20.jpg)
Iris Overview
What can I do with Iris?
http://ledoyle.wordpress.com/2011/08/14/speedy-creation-of-a-cognitive-radio-demo/
• Jacek Kibilda
• COST Short-Term Scientific Mission
• 2 weeks (no prior knowledge of Iris)
• DSA demo (primary user avoidance)
Basestation
Mobile Station
Mobile StationControl
Primary
Data
![Page 21: Iris Software Radio Architecture · • A GPP-based software radio architecture – Fundamental block is the component • Most basic configuration : – A source component – A](https://reader035.vdocuments.mx/reader035/viewer/2022071216/60475007fcc2a01bbe3f753a/html5/thumbnails/21.jpg)
The Basics...
Iris Architecture - The Basics
• A GPP-based software radio architecture
– Fundamental block is the component
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The Basics...
Iris Architecture - The Basics
• A GPP-based software radio architecture
– Fundamental block is the component
• Most basic configuration :
– A source component
– A sink component
– Some processing components
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The Basics...
Iris Architecture - The Basics
• A GPP-based software radio architecture
– Fundamental block is the component
• Most basic configuration :
– A source component
– A sink component
– Some processing components
Source Process SinkProcess
![Page 24: Iris Software Radio Architecture · • A GPP-based software radio architecture – Fundamental block is the component • Most basic configuration : – A source component – A](https://reader035.vdocuments.mx/reader035/viewer/2022071216/60475007fcc2a01bbe3f753a/html5/thumbnails/24.jpg)
The Basics...
Iris Architecture - The Basics
• A GPP-based software radio architecture
– Fundamental block is the component
• Most basic configuration :
– A source component
– A sink component
– Some processing components
• XML document describes radio structure
Source Process SinkProcess
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Iris Architecture - The Basics<softwareradio name="Radio1">
<engine name="phyengine1" class="phyengine">
<component name="filerawreader1" class="filerawreader"><parameter name="filename" value="testdata.txt"/><port name="output1" class="output"/>
</component>
<component name="ofdmmod1" class="ofdmmodulator"><port name="input1" class="input"/><port name="output1" class="output"/>
</component>
<component name="signalscaler1" class="signalscaler"><port name="input1" class="input"/><port name="output1" class="output"/>
</component>
<component name="usrptx1" class="usrptx"><parameter name="frequency" value="5010000000"/><parameter name="rate" value="1000000"/><port name="input1" class="input"/>
</component>
</engine>
<link source="filerawreader1.output1" sink="ofdmmod1.input1" /><link source="ofdmmod1.output1" sink="signalscaler1.input1" /><link source="signalscaler1.output1" sink="usrptx1.input1" />
</softwareradio>
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Iris Architecture - The Basics<softwareradio name="Radio1">
<engine name="phyengine1" class="phyengine">
<component name="filerawreader1" class="filerawreader"><parameter name="filename" value="testdata.txt"/><port name="output1" class="output"/>
</component>
<component name="ofdmmod1" class="ofdmmodulator"><port name="input1" class="input"/><port name="output1" class="output"/>
</component>
<component name="signalscaler1" class="signalscaler"><port name="input1" class="input"/><port name="output1" class="output"/>
</component>
<component name="usrptx1" class="usrptx"><parameter name="frequency" value="5010000000"/><parameter name="rate" value="1000000"/><port name="input1" class="input"/>
</component>
</engine>
<link source="filerawreader1.output1" sink="ofdmmod1.input1" /><link source="ofdmmod1.output1" sink="signalscaler1.input1" /><link source="signalscaler1.output1" sink="usrptx1.input1" />
</softwareradio>
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Iris Architecture - The Basics<softwareradio name="Radio1">
<engine name="phyengine1" class="phyengine">
<component name="filerawreader1" class="filerawreader"><parameter name="filename" value="testdata.txt"/><port name="output1" class="output"/>
</component>
<component name="ofdmmod1" class="ofdmmodulator"><port name="input1" class="input"/><port name="output1" class="output"/>
</component>
<component name="signalscaler1" class="signalscaler"><port name="input1" class="input"/><port name="output1" class="output"/>
</component>
<component name="usrptx1" class="usrptx"><parameter name="frequency" value="5010000000"/><parameter name="rate" value="1000000"/><port name="input1" class="input"/>
</component>
</engine>
<link source="filerawreader1.output1" sink="ofdmmod1.input1" /><link source="ofdmmod1.output1" sink="signalscaler1.input1" /><link source="signalscaler1.output1" sink="usrptx1.input1" />
</softwareradio>
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Iris Architecture - The Basics<softwareradio name="Radio1">
<engine name="phyengine1" class="phyengine">
<component name="filerawreader1" class="filerawreader"><parameter name="filename" value="testdata.txt"/><port name="output1" class="output"/>
</component>
<component name="ofdmmod1" class="ofdmmodulator"><port name="input1" class="input"/><port name="output1" class="output"/>
</component>
<component name="signalscaler1" class="signalscaler"><port name="input1" class="input"/><port name="output1" class="output"/>
</component>
<component name="usrptx1" class="usrptx"><parameter name="frequency" value="5010000000"/><parameter name="rate" value="1000000"/><port name="input1" class="input"/>
</component>
</engine>
<link source="filerawreader1.output1" sink="ofdmmod1.input1" /><link source="ofdmmod1.output1" sink="signalscaler1.input1" /><link source="signalscaler1.output1" sink="usrptx1.input1" />
</softwareradio>
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Iris Architecture - The Basics<softwareradio name="Radio1">
<engine name="phyengine1" class="phyengine">
<component name="filerawreader1" class="filerawreader"><parameter name="filename" value="testdata.txt"/><port name="output1" class="output"/>
</component>
<component name="ofdmmod1" class="ofdmmodulator"><port name="input1" class="input"/><port name="output1" class="output"/>
</component>
<component name="signalscaler1" class="signalscaler"><port name="input1" class="input"/><port name="output1" class="output"/>
</component>
<component name="usrptx1" class="usrptx"><parameter name="frequency" value="5010000000"/><parameter name="rate" value="1000000"/><port name="input1" class="input"/>
</component>
</engine>
<link source="filerawreader1.output1" sink="ofdmmod1.input1" /><link source="ofdmmod1.output1" sink="signalscaler1.input1" /><link source="signalscaler1.output1" sink="usrptx1.input1" />
</softwareradio>
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Iris Architecture - The Basics<softwareradio name="Radio1">
<engine name="phyengine1" class="phyengine">
<component name="filerawreader1" class="filerawreader"><parameter name="filename" value="testdata.txt"/><port name="output1" class="output"/>
</component>
<component name="ofdmmod1" class="ofdmmodulator"><port name="input1" class="input"/><port name="output1" class="output"/>
</component>
<component name="signalscaler1" class="signalscaler"><port name="input1" class="input"/><port name="output1" class="output"/>
</component>
<component name="usrptx1" class="usrptx"><parameter name="frequency" value="5010000000"/><parameter name="rate" value="1000000"/><port name="input1" class="input"/>
</component>
</engine>
<link source="filerawreader1.output1" sink="ofdmmod1.input1" /><link source="ofdmmod1.output1" sink="signalscaler1.input1" /><link source="signalscaler1.output1" sink="usrptx1.input1" />
</softwareradio>
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Iris Architecture - The Basics<softwareradio name="Radio1">
<engine name="phyengine1" class="phyengine">
<component name="filerawreader1" class="filerawreader"><parameter name="filename" value="testdata.txt"/><port name="output1" class="output"/>
</component>
<component name="ofdmmod1" class="ofdmmodulator"><port name="input1" class="input"/><port name="output1" class="output"/>
</component>
<component name="signalscaler1" class="signalscaler"><port name="input1" class="input"/><port name="output1" class="output"/>
</component>
<component name="usrptx1" class="usrptx"><parameter name="frequency" value="5010000000"/><parameter name="rate" value="1000000"/><port name="input1" class="input"/>
</component>
</engine>
<link source="filerawreader1.output1" sink="ofdmmod1.input1" /><link source="ofdmmod1.output1" sink="signalscaler1.input1" /><link source="signalscaler1.output1" sink="usrptx1.input1" />
</softwareradio>
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Iris Architecture - The Basics<softwareradio name="Radio1">
<engine name="phyengine1" class="phyengine">
<component name="filerawreader1" class="filerawreader"><parameter name="filename" value="testdata.txt"/><port name="output1" class="output"/>
</component>
<component name="ofdmmod1" class="ofdmmodulator"><port name="input1" class="input"/><port name="output1" class="output"/>
</component>
<component name="signalscaler1" class="signalscaler"><port name="input1" class="input"/><port name="output1" class="output"/>
</component>
<component name="usrptx1" class="usrptx"><parameter name="frequency" value="5010000000"/><parameter name="rate" value="1000000"/><port name="input1" class="input"/>
</component>
</engine>
<link source="filerawreader1.output1" sink="ofdmmod1.input1" /><link source="ofdmmod1.output1" sink="signalscaler1.input1" /><link source="signalscaler1.output1" sink="usrptx1.input1" />
</softwareradio>
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Iris Architecture - The Basics<softwareradio name="Radio1">
<engine name="phyengine1" class="phyengine">
<component name="filerawreader1" class="filerawreader"><parameter name="filename" value="testdata.txt"/><port name="output1" class="output"/>
</component>
<component name="ofdmmod1" class="ofdmmodulator"><port name="input1" class="input"/><port name="output1" class="output"/>
</component>
<component name="signalscaler1" class="signalscaler"><port name="input1" class="input"/><port name="output1" class="output"/>
</component>
<component name="usrptx1" class="usrptx"><parameter name="frequency" value="5010000000"/><parameter name="rate" value="1000000"/><port name="input1" class="input"/>
</component>
</engine>
<link source="filerawreader1.output1" sink="ofdmmod1.input1" /><link source="ofdmmod1.output1" sink="signalscaler1.input1" /><link source="signalscaler1.output1" sink="usrptx1.input1" />
</softwareradio>
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Iris Architecture - The Basics<softwareradio name="Radio1">
<engine name="phyengine1" class="phyengine">
<component name="filerawreader1" class="filerawreader"><parameter name="filename" value="testdata.txt"/><port name="output1" class="output"/>
</component>
<component name="ofdmmod1" class="ofdmmodulator"><port name="input1" class="input"/><port name="output1" class="output"/>
</component>
<component name="signalscaler1" class="signalscaler"><port name="input1" class="input"/><port name="output1" class="output"/>
</component>
<component name="usrptx1" class="usrptx"><parameter name="frequency" value="5010000000"/><parameter name="rate" value="1000000"/><port name="input1" class="input"/>
</component>
</engine>
<link source="filerawreader1.output1" sink="ofdmmod1.input1" /><link source="ofdmmod1.output1" sink="signalscaler1.input1" /><link source="signalscaler1.output1" sink="usrptx1.input1" />
</softwareradio>
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Iris Architecture - The Basics
File ReaderOFDM
ModulatorUSRP
TransmitterScaler
![Page 36: Iris Software Radio Architecture · • A GPP-based software radio architecture – Fundamental block is the component • Most basic configuration : – A source component – A](https://reader035.vdocuments.mx/reader035/viewer/2022071216/60475007fcc2a01bbe3f753a/html5/thumbnails/36.jpg)
Iris Architecture - The Basics
Source Process
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Iris Architecture - The Basics
data
timestamp
sample rate
• Data is passed between components in blocks – a DataSet
• Vector of data samples
• Metadata – e.g. timestamp, sample rate
Source Process
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Iris Architecture - The Basics
Source Process
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Iris Architecture - The Basics
Source Process
Process
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Iris Architecture - The Basics
Source Process
ProcessSource
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Iris Architecture - Engines
Engines
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Iris Architecture - Engines
• An engine
– The environment within which one more components operates
– Defines its own data-flow mechanism
– Defines its own reconfiguration mechanisms
– Runs one or more of its own threads
– Provides a clean interface for the Iris system
Engines
![Page 43: Iris Software Radio Architecture · • A GPP-based software radio architecture – Fundamental block is the component • Most basic configuration : – A source component – A](https://reader035.vdocuments.mx/reader035/viewer/2022071216/60475007fcc2a01bbe3f753a/html5/thumbnails/43.jpg)
Iris Architecture - Engines
• An engine
– The environment within which one more components operates
– Defines its own data-flow mechanism
– Defines its own reconfiguration mechanisms
– Runs one or more of its own threads
– Provides a clean interface for the Iris system
Engines
Executes a section of the flow graph
Completely up to the engine how that’s done
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Iris Architecture - Engines
• Two engine types:
– PHY Engine
– Stack Engine
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Iris Architecture - Engines
• PHY Engine
– Maximum flexibility
– One thread per engine
– Data-driven execution
– One or more components per engine
– Multiple component inputs / outputs
– Unidirectional data flow
– No fixed relationship between the inputs and outputs of a component
– Flexible blocksizes
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Iris Architecture - Engines
UsrpReceiver
SignalAnalyser
OFDMDemodulator
FileWriter
PHY Engine
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Iris Architecture - Engines
• Stack Engine
– Network stack architecture
– Components are layers within the stack
– Each component runs its own thread
– Bidirectional data flow
– Supports e.g. MAC layer implementations
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Iris Architecture - Engines
Network Interface
Stack Engine
Routing
MAC
Security
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Iris Architecture - Engines
UsrpReceiver
SignalAnalyser
OFDMDemodulat
or
PHY Engine
Network Interface
Stack Engine
Routing
MAC
Security
UsrpTransmitter
GainOFDM
Modulator
PHY Engine
• Transceiver Design
– Multiple engines
– Tx and Rx PHY chains
– Bidirectional stack
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• So far...– We can create a radio
– and reconfigure it manually
Controllers
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• So far...– We can create a radio
– and reconfigure it manually
• How to reconfigure dynamically?
Controllers
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Controllers
UsrpReceiver
SignalAnalyser
OFDMDemodulator
FileWriter
PHY Engine
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Controllers
UsrpReceiver
SignalAnalyser
OFDMDemodulator
FileWriter
PHY Engine
• Parameters
Parametric reconfiguratione.g. Number of subcarriers
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Controllers
UsrpReceiver
SignalAnalyser
OFDMDemodulator
FileWriter
PHY Engine
• Events
Parametric reconfiguratione.g. Number of subcarriers
Evente.g. Detected waveform
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Controllers
UsrpReceiver
SignalAnalyser
OFDMDemodulator
FileWriter
PHY Engine
Parametric reconfiguratione.g. Number of subcarriers
Evente.g. Detected waveform
Controller
![Page 56: Iris Software Radio Architecture · • A GPP-based software radio architecture – Fundamental block is the component • Most basic configuration : – A source component – A](https://reader035.vdocuments.mx/reader035/viewer/2022071216/60475007fcc2a01bbe3f753a/html5/thumbnails/56.jpg)
Controllers
UsrpReceiver
SignalAnalyser
OFDMDemodulat
or
PHY Engine
Network Interface
Stack Engine
Routing
MAC
Security
UsrpTransmitter
GainOFDM
Modulator
PHY Engine
![Page 57: Iris Software Radio Architecture · • A GPP-based software radio architecture – Fundamental block is the component • Most basic configuration : – A source component – A](https://reader035.vdocuments.mx/reader035/viewer/2022071216/60475007fcc2a01bbe3f753a/html5/thumbnails/57.jpg)
Controllers
UsrpReceiver
SignalAnalyser
OFDMDemodulat
or
PHY Engine
Network Interface
Stack Engine
Routing
MAC
Security
UsrpTransmitter
GainOFDM
Modulator
PHY Engine
Controller
![Page 58: Iris Software Radio Architecture · • A GPP-based software radio architecture – Fundamental block is the component • Most basic configuration : – A source component – A](https://reader035.vdocuments.mx/reader035/viewer/2022071216/60475007fcc2a01bbe3f753a/html5/thumbnails/58.jpg)
Controllers
UsrpReceiver
SignalAnalyser
OFDMDemodulat
or
PHY Engine
Network Interface
Stack Engine
Routing
MAC
Security
UsrpTransmitter
GainOFDM
Modulator
PHY Engine
Controller
![Page 59: Iris Software Radio Architecture · • A GPP-based software radio architecture – Fundamental block is the component • Most basic configuration : – A source component – A](https://reader035.vdocuments.mx/reader035/viewer/2022071216/60475007fcc2a01bbe3f753a/html5/thumbnails/59.jpg)
Iris Architecture - Core
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Why use Iris?
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Why use Iris?
Quick Learning Curve
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Why use Iris?
Quick Learning Curve
Open Source
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Why use Iris?
Quick Learning Curve
Open Source
Easy to Contribute
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Why use Iris?
Quick Learning Curve
Open Source
Easy to Contribute
Small Project
![Page 65: Iris Software Radio Architecture · • A GPP-based software radio architecture – Fundamental block is the component • Most basic configuration : – A source component – A](https://reader035.vdocuments.mx/reader035/viewer/2022071216/60475007fcc2a01bbe3f753a/html5/thumbnails/65.jpg)
Why use Iris?
Quick Learning Curve
Open Source
Easy to Contribute
Small Project
Quickly Implement
Complex Systems
![Page 66: Iris Software Radio Architecture · • A GPP-based software radio architecture – Fundamental block is the component • Most basic configuration : – A source component – A](https://reader035.vdocuments.mx/reader035/viewer/2022071216/60475007fcc2a01bbe3f753a/html5/thumbnails/66.jpg)
• Code: https://github.com/softwareradiosystems
• Redmine: http://www.softwareradiosystems.com/redmine/projects/iris
• Mailing Lists: http://www.softwareradiosystems.com/mailman/listinfo
• Blog: http://irissoftwareradio.wordpress.com/
Getting Started
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Try it out
https://github.com/softwareradiosystems
Thank you
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Additional Material
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Release 1.1.0
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Release 1.1.0
• Liquid-DSP Components