sabera kazi

8/3/2019 sabera kazi

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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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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:


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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Commercial Radios for Dynamic Adaptation in

Mobile QoS-Aware Environments:


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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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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ITT Radios:

Single Channel Ground and Airborne Radio System (SINCGARS)

SINCGARS

NTDR

ENTDR SUO

Small Unit Operations (SUO)



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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



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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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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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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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Modular Radio concept (cont.):


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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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



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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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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



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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



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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:



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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):



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covert

SEAL squad

(hostage rescue)








spot

imagery

tactical relay UAV

low-observable UAV


+ imagery



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(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





(minimizes sat link use)

covert

SEAL squad

(hostage rescue)



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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




(high data rate)

covert

SEAL squad

(hostage rescue)

tactical relay UAV



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imagery

low-observable UAV


+ imagery

covert

SEAL squad

(hostage rescue)




(high data rate)











tactical relay UAV



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imagery

low-observable UAV

tactical relay UAV














(high data rate)

covert

SEAL squad

(hostage rescue)


+ imagery



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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


Ad i S f di S i


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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


Ad i S f R di T b d


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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:


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