sabera kazi
TRANSCRIPT
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DYNAMIQUE2001/05/07
Adaptive Software Radios for AutonomousQoS-Aware Adaptation in Unattended
Dynamic Mobile Inter-Networked
Environments
Sabera Kazi and Tom Phinney
Honeywell Laboratories
Adaptive Software Radio
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DYNAMIQUE2001/05/07
Multidimensional
QoS-aware algorithms
Operating System
AdaptiveQoS Aware
Protocols(UCLA)
Adaptive Session/Presentation Layer
(incl. crypto aspects)
(HL/UCLA)
Adaptive Transport Layer
(peer-peer, peer-multipeer as approp.)
(UCLA)Adaptive Network Layer
(dynamic clustering)
(UCLA)
Adaptive Data Link Layer
(co-adapts with RF path properties)
(ITT/HL)
QoS mgmt
per socket
(HL/UCLA)
comm QoS mgmt
app QoS mgmt
OS QoS mgmt
ARMMnet comm
ARMMnet
Distributed Adaptive
Resource Management (HL)
Data Path
QoS Management Path
power &
beamforming
antenna &
gain selection
AdaptiveRadios
/WirelessChannel
(HL/ITT/UCLA)
FEC& other coding
spreading or turbo
code selection
frequency
selection
up/down-
conversion
bit-codingselection
chip/baud generation
& correlation/detection
Adaptive Applications(HL/ITT)
QoS mgmt
per app
(HL/UCLA)
HL / ITT
UCLA
Integrated Architecture: UCLA, HL, ITT
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DYNAMIQUE2001/05/07
Objectives:
Adaptive Software Radio
Characterize the dynamic mission-critical wireless channelincluding UAVs and UGVs
Estimate channel attributes in real time
Design and develop a software interface for controlling
the parameters of the software radios
Demonstrate robust and seamless data transfer between anair vehicle and a ground station using software radios
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DYNAMIQUE2001/05/07
Commercial Radios for Dynamic Adaptation in
Mobile QoS-Aware Environments:
Adaptive Software Radio
Todays commercial radios
do not support adaptive QoS communications
do not estimate channel attributes in real time
These radios do not provide dynamic adaptation with
ever changing channel attributes
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DYNAMIQUE2001/05/07
QoS-Aware SUO Radio Technology by ITT:
ITTs Small Unit Operations (SUO) radio provides:
Channel quality estimation
Adaptive link control
Energy-based routing
Currently, there is no software management interface to
report this information or control these features
Adaptive Software RadioITT
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DYNAMIQUE2001/05/07
ITT Radios:
Single Channel Ground and Airborne Radio System (SINCGARS)
SINCGARS
NTDR
ENTDR SUO
Small Unit Operations (SUO)
Adaptive Software RadioITT
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DYNAMIQUE2001/05/07
Future of ITTs Radio Technology:
Developing the Enhanced Near Term Digital Radio
(ENTDR)
5-fold increase in range at same power and data rate
Future radio development is motivated by the program
sponsors
Adaptive Software RadioITT
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DYNAMIQUE2001/05/07
Commercial Software Radio:
ITT SUO radio provides only Direct Sequence SpreadSpectrum (DSSS)
Use commercial software radio to demonstrate
Frequency Hopping Spread Spectrum (FHSS), M-PSK, FSK etc.
Demonstrate robust and seamless data transfer between an
air vehicle and a ground station
Provides knowledge of
Current technology limitations
Potential problem areas and
Make sure that current limitations are overcome by the new
technology
Adaptive Software Radio COTS
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DYNAMIQUE2001/05/07
COTS Software Defined Radio:
BPSK, DBPSK, QPSK, DQPSK, FSK, and MSK
Frequency of operation: (3.4 - 4.2) GHz
PSK symbol rates from 1.2 Ksps to 16 Msps;
FSK from 1.2 Ksps to 500 Ksps
Input IF of 160 MHz +/- 40 MHz (70 MHz +/- 25 MHz)
Phase estimator assisted TDMA burst acquisition.
Tuning resolution less then .05 Hz.
Java remote control over TCP/IP
TDM, TDMA, Push-to-Talk, SCPC
Matched filter CDMA spread spectrum receiver
FEC: Convolutional and Reed Solomon Coding
Adaptive Software Radio COTS
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DYNAMIQUE2001/05/07
Modular Radio Concept:
Adaptive Modular Radio concept will provide dynamic
adaptation in QoS-aware unattended environments
Provides control knobs to enable many levels ofadaptivity
This radio will be developed in this program and will be
demonstrated at the end of 2005.
Adaptive Software Radio UCLA
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DYNAMIQUE2001/05/07
Modular Radio concept (cont.):
Adaptive Software Radio UCLA
The OFDM modular radio estimates channel on a block-
by-block basis. This information is provided to higher
layers.
Immune to multipath fading
Jammed subchannel can be identified and avoided in future
blocks
Adapts to user mobility by providing variable blocklengths
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DYNAMIQUE2001/05/07
Modular Radio concept (cont.):
Adapts to dynamic channel characteristics to support required QoS
by providing various
Modulation Schemes
M-QAM and M-PSK on each subchannel
Channel Accessing Schemes
FDMA and TDMA, FHSS-CDMA, SDMA
Frequency Selection
Any frequency within the band of operation can be chosen on a per-frame basis
Adaptive Antenna
Smart Antenna and MIMO Space-Time processing
Security Adaptive antenna combined with DSSS/FHSS can provide covert communications
Transmitted Power Level
Can be uniquely specified for each subchannel
Adaptive Software Radio UCLA
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DYNAMIQUE2001/05/07
Scenario 1:
Collaborative Surveillance / Reconnaisance
Multiple UAVs on roughly parallel flight paths
Overlapping observation footprints on ground
UAVs share and forward interesting features forrelay to over-the-horizon higher command
SAR/FLIR/optical imagery as required
auto-tasking of followup surveillance / recon passes
Adaptive Software RadioScenarios
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DYNAMIQUE2001/05/07
Scenario 2: Ground Support
Wide-area imagery before ground insertion
Hi-res spot imagery supporting ground ops
Covert data/voice tactical comm link for ground ops
All forwarding via other UAVs to over-the-horizon
theatre command
Potential direct relay via satellite to central
command and maybe national command authority
Adaptive Software RadioScenarios
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DYNAMIQUE2001/05/07
LF squad support link:
20 MHz, 4.8 kbps, DSSS
4 bits/127 chip code word
LPD, radio allocation: 20%
covert
SEAL squad
(hostage rescue)
UHF squad link to central command:
QPSK, 1.5 GHz, 8 kbps, 2 bits/baud
antenna beamforming for LPD
radio allocation: 0.6%
VHF imagery and squad support uplink:
300 MHz, 1.5 Mbps, 8PSK, 3 bits/baud
FHSS for LPD, radio time allocation: 35%
spot
imagery
tactical relay UAV
low-observable UAV
Conceptual Scenario:squad voice/data relay
+ imagery
Adaptive Software RadioScenarios
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Demonstrate dynamic adaptation of SUO, Softwareradios and helicopter as UAV in mobile internetworked
QoS-aware unattended environments:
Direct Sequence Spread Spectrum (DSSS)
voice/data comm link with SEAL squad in urban or jungle terrain
Frequency Hopping Spread Spectrum (FHSS)
inter-UAV comm
imagery and ground relay to theatre command
Quadrature Phase Shift Keying (QPSK)
voice uplink to satellite, relaying to
central command and maybe national command authority
Deliverables:
Adaptive Software Radio
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QoS-driven adaptation modeled by dynamicreconfiguration of channel definitions during test
Produces assessment of simulation fidelity and areas
needing improvement
Provides knowledge of current COTS technology
limitations and potential problem areas
Deliverables (cont):
Adaptive Software Radio
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DYNAMIQUE2001/05/07
LF squad support link:
20 MHz, 4.8 kbps, DSSS
4 bits/127 chip code word
LPD, radio allocation: 20%
covert
SEAL squad
(hostage rescue)
UHF squad link to central command:
QPSK, 1.5 GHz, 8 kbps, 2 bits/baud
antenna beamforming for LPD
radio allocation: 0.6%
VHF imagery and squad support uplink:
300 MHz, 1.5 Mbps, 8PSK, 3 bits/baud
FHSS for LPD, radio time allocation: 35%
spot
imagery
tactical relay UAV
low-observable UAV
Conceptual Scenario:squad voice/data relay
+ imagery
Adaptive Software RadioScenarios
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DYNAMIQUE2001/05/07
LF squad support link:
20 MHz, 4.8 kbps, DSSS
4 bits/127 chip code word
LPD, radio allocation: 20%
(penetrates urban clutter)
low-observable UAV
Squad tracking link:(high-visibility mission)
High chip rate DSSS for maximal LPD
20 MHz channel to penetrate urban environment
4.8 kbps voice due to low channel frequency and high chip rate
QPSK for minimal satellite channel time burden;
permits 300 such missions per 2.5 kHz wide satellite channel
antenna beamforming to eliminate backlobe for LPD on ground
UHF squad link to central command:
QPSK, 1.5 GHz, 8 kbps, 2 bits/baud
antenna beamforming for LPD
radio allocation: 0.6%
(minimizes sat link use)
covert
SEAL squad
(hostage rescue)
Adaptive Software RadioScenarios
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DYNAMIQUE2001/05/07
imagery
low-observable UAV
Imagery + squad support
FHSS for high data rate + LPD
1.5 Mbps for imagery
300 MHz to demonstrate mid-band
at data rate, limited to 35% channel time
VHF imagery and squad support uplink:
300 MHz, 1.5 Mbps, 8PSK, 3 bits/baud
FHSS for LPD, radio time allocation: 35%
(high data rate)
covert
SEAL squad
(hostage rescue)
tactical relay UAV
Adaptive Software RadioScenarios
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DYNAMIQUE2001/05/07
imagery
low-observable UAV
Conceptual Scenario:squad voice/data relay
+ imagery
covert
SEAL squad
(hostage rescue)
VHF imagery and squad support uplink:
300 MHz, 1.5 Mbps, 8PSK, 3 bits/baud
FHSS for LPD, radio time allocation: 35%
(high data rate)
UHF squad link to central command:
QPSK, 1.5 GHz, 8 kbps, 2 bits/baud
antenna beamforming for LPD
radio allocation: 0.6%
(minimizes sat link use)
LF squad support link:
20 MHz, 4.8 kbps, DSSS
4 bits/127 chip code word
LPD, radio allocation: 20%
(penetrates urban clutter)
tactical relay UAV
Adaptive Software RadioScenarios
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DYNAMIQUE2001/05/07
imagery
low-observable UAV
tactical relay UAV
UHF squad link to central command:
QPSK, 1.5 GHz, 8 kbps, 2 bits/baud
antenna beamforming for LPD
radio allocation: 0.6%
(minimizes sat link use)
LF squad support link:
20 MHz, 4.8 kbps, DSSS
4 bits/127 chip code word
LPD, radio allocation: 20%
(penetrates urban clutter)
VHF imagery and squad support uplink:
300 MHz, 1.5 Mbps, 8PSK, 3 bits/baud
FHSS for LPD, radio time allocation: 35%
(high data rate)
covert
SEAL squad
(hostage rescue)
Conceptual Scenario:squad voice/data relay
+ imagery
Adaptive Software RadioScenarios
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DYNAMIQUE2001/05/07
imagery
Adapt
Voice link
Voice link
Adapt
Imagery link
LF
UHF
VHF
MAC coordination
comm cycle
period = 1 s
Time LF squad support link VHF theatre command linkUHF central command link
Control | DataControl | Data
Voice link
tactical relay UAV
Data
Adaptive Software RadioScenarios
Ad i S f di S i
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DYNAMIQUE2001/05/07
Adapt
VHF
Adapt
Voice linkLF
MAC coordination
imagery
Voice linkUHF
Time LF squad support link
comm cycle
period = 1 s
Control | DataControl | Data Data
VHF theatre command linkUHF central command link
Imagery link
Voice link
tactical relay UAV
Adaptive Software RadioScenarios
Ad i S f R di T b d
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25DYNAMIQUE
2001/05/07
Adapt
Voice link
Voice link
Adapt
UHF ground link
in lieu of satellite
LF ground link inside building
in lieu ofSEAL squad
helicopter moves to give Doppler shift and varying path
HL COTS demonstration testbed
Thesis Title: Dynamic RF adaptation and per-message channelredefinition in a varying propagation environmentLF
UHF
VHF
MAC coordination
Time LF squad support link
Control | DataControl | Data
VHF theatre command linkUHF central command link
Data
Imagery link
Voice link
VHF ground link in lieu
of tactical relay UAV
Adaptive Software RadioTestbed
Ad i S f R di
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DYNAMIQUE2001/05/07
Select radio: ITT SUO Radio Model selected radio for simulation.
Characterize the dynamic mission-critical wireless channel
including UAVs and UGVs.
Estimate channel attributes in real time.
Design and develop a software interface for controlling the
parameters of the selected radio.
Demonstrate robust and seamless data transfer between an
air vehicle and a ground station using the above softwareradio.
2001-2005 Tasks:
Adaptive Software Radio