ada503803(the mobile internet——the next big thing2007)

移动互联网及应用

COMMUNICATIONSThe Mobile Internet– The Next Big ThingElectrons& Photons: You need both!

Dr. Steve Pappert DARPA/MTO Symposium March 5, 2007

移动互联网及应用

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05 MAR 2007

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The Mobile Internet The Next Big Thing

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DARPA

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Approved for public release, distribution unlimited

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DARPA Microsystems Technology Symposium held in San Jose, California on March 5-7, 2007.Presentations, The original document contains color images.

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Standard Form 298 (Rev. 8-98)

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移动互联网及应用

Integrated Microsystem

Communications: Voice, Video& Data Information Transfer20th Century

Platform Centric WarfightingComms Wired Interconnects& Data Links21th

Network Centric WarfightingCommsCentury

Wired& Wireless Links

移动互联网及应用

The Military Comms ProblemNetwork Centric Operations21st Century RF Technologies Will Change The Way We Engage Our AdversariesNetworked Manned and Unmanned SystemsSpace Based RADAR E-3 AWACS Airborne Early Warning FLTSAT E-2C Hawkeye RC-135V Rivet Joint Tier II+ UAV Global Hawk

See Anything… From Anywhere… At Anytime… PERSISTANT, STANDOFF SURVEILLANCE

UCAV

ANDTEL UCAR

Surface Fleet Aegis cruiser

Provide Real-Time Global Information DistributionSmall Unit Operations

Underwater Vehicles& Towed Arrays

SENSOR TO SHOOTER INFORMATION GRID

Expanding ISR DemandsSIGINT IMINT MASINT

Burgeoning Comms Demands

Multi-INT

Sensor Grid

Information Grid

Shooter Grid

移动互联网及应用

RF Front-End Technology Trajectory On Target To Satisfy The Military Comms Problem DARPA’s Current ProgramsTEAM SMART SWIFT WBGS-RF ULTRA-T/R TACOTA

Tommorrow RF Front-End SolutionsDigital SynthesizerTFAST APROPOS CSAC

HPA

Φ

DACLO Signal Proc.PHOR-FRONT 3D MERFS

D

Circulator/ Switch Transmit/Receive Module RF/Optical Domain Processing/Filtering

OSC

SADRT NLEQ A2I

LNAABCS ISIS-CDT FLARE MORPH

Φ

ADCLOCOSMOS PHOBIAC

P

Antenna Front-End

IRFFE AOSP ASP PhASER EPIC

Digital Receiver

●>20 DARPA/MTO RF Programs

across the spectrum- RF& Mixed Signal Electronics - Analog& Digital Photonics

Enables

Network Centric Warfare

5-10 yr. timeframe

移动互联网及应用

Ultimate Military Comms SolutionDriven by Capacity, Availability& SecuritySpectrally efficient adaptive multi-level frequency hopping coherent waveforms Multi-level complex waveforms for high-capacity (short-up emitter) Waveform agility for SNR utilization Multi-dimensional diversity for link availability, LPI/LPD, anti-jam& security (e.g. frequency, polarization, spatial,…) Coherent detection brings sensitivity and enables DSP channel compensation Link CapacityApproaching Shannon Capacity Limit

Waveform/Symbol Rate AgilityModulation AgilityUse modulation that is best suited for the target environment and link Enables variable bit rates and ultra -high capacity per wavelengthI

BPSK 1 bit/symbol

Q

QPSK 2 bits/symbol

Software Defined Agile Modems

16-QAM 4 bits/symbol

Unified JTRS-Like RF to Optical Transmission Architecture2 Polarization I,Q Synthesizer(Vector Modulator)

Coherent Band Translation

“RF”DC to Daylight

Coherent Band Translation

2 Polarization I,Q Analyzer(Coherent Receiver)

Baseband I& Q Data

Aperture& Transmission Channel

Baseband I& Q Data

“IF”DC to Daylight

(Air/Space/Water)

“IF”DC to Daylight

Overlaying Free-Space Optical Communications Brings Added Capacity& Security

移动互联网及应用

Big Optical Challenge/Opportunity:Hyperfine Optical FilteringUltra-Low Loss Photonic Waveguides& Resonators Ultra-Low Loss Photonic Waveguides& Resonators Problems: Today’s PIC waveguides have losses closer to Black Paint than to Optical Fibers! Today’s resonator Q’s are well below the predicted limitationsTypical Telecom Fiber Ty …… 此处隐藏：5035字，全部文档内容请下载后查看。喜欢就下载吧 ……