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Model-Based Design for Signal Processing and Communications: Automotive Applications

Dr. Colin Warwick, The MathWorks, Inc.

© 2004 The MathWorks, Inc.

MATLAB, Simulink, Stateflow, and Real-Time Workshop are registered trademarks of The MathWorks, Inc.

Other product or brand names are trademarks or registered trademarks of their respective holders.

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Agenda

Advancing Technologies in the Automobile– In which do signal processing and communications

have a role?Model-Based Design Addresses Critical Challenges– Leverage control design methodology into project

that use signal processing and communication– Benefits

Customer SuccessesSimulink 6 family of products drives the evolution and adoption of Model-Based Design

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Software and electronics are pervasive in in today’s vehicles

Power Management

Transmission

EngineRide Control

ABS

Steering

Stability Controls

Traction Control

Obstacle Detection

Adaptive Cruise Control

Crash Avoidance

Airbags

Adaptive Front Lighting Systems

Passenger Detection

WindowsDoors

Lights

Climate Controls

Driver Drowsiness Infotainment

Instrumentation

Voice Recognition

Navigation

Wireless Connectivity

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ChallengesExample: Wireless communications

Time-to-market pressureIncreasing complexity– Multiple standards– Voice, video, and data

integration– Higher data rates

Broad palette of target technologies– Team integration– Moving partitioning

boundaries

ASSPAnalog

FPGA

ASIC DSP s/w

MCU s/w

JTAG!

IP3!ACS!

BIST!

RTOS!

IRQ!

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5

SpecDesign

ImplementTest

Introduced

Detected

8%

15%

22%

55%

60%

21%

12%

7%0%

10%

20%

30%

40%

50%

60%

70%

Where Errors Are Introduced... and Detected

Source: “Migration from Simulation to Verification with ModelSim”by Paul Yanik. EDA Tech Forum, 2004 Mar 11, Newton MA

Close the verification gap

“…each delay in the detection and correction of a design problem makes it an order of magnitude more expensive to fix…”

Clive Maxfield and Kuhoo Goyal “EDA: Where Electronics Begins”

TechBites Interactive, October 1, 2001ISBN: 0971406308]

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ChallengesExample: Wireless communications

Time-to-market pressureIncreasing complexity– Multiple standards– Voice, video, and data

integration– Higher data rates

Broad palette of target technologies– Team integration– Moving partitioning

boundaries

ASSPAnalog

FPGA

ASIC DSP s/w

MCU s/w

JTAG!

IP3!ACS!

BIST!

RTOS!

IRQ!

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The Value of Model-Based DesignModel-Based Design

Executable specificationDesign with simulationImplementation through code generationContinuous test and verification

Accelerates InnovationRapid design iterations“What-if” studiesUnique features and differentiators

Improves Quality Minimize hand coding errorsUnambiguous communication internally and externally

Reduces Development CostReduce expensive physical prototypesEliminate errors early when they are cheap to fixReduce testing

Improves Time-to-marketGet the design right the first time

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Model-Based Design applied to Signal Processing and Communications

Simulink

MATLAB

Toolboxes

Sign

al DAQ CardsInstruments

Link for Code ComposerLink for ModelSim

Desktop Apps.Automated Reports

Blocksets

Sign

al

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Frames Simplify Multi-rate Models

ts=2

ts = 3

Execution sequence

Sample clock, ts = gcd(2,3) = 1

Sample-by-sampleprocessing

without frames

Process 1

Process 2

Frame clock, tf = gcd(6, 6) = 6

Execution sequence

tf=6With framesA frame is

a sequence of samplesgrouped together for execution

Note: An important side benefit of frames is execution speed

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Nallatech Designs a Reconfigurable Video Encryption System for the UK Ministry of Defence with Simulink

The ChallengeTo design a reconfigurable video encryption system

The SolutionUse Simulink and Xilinx System Generator for DSP to create algorithms represented in subsystems, debug and integrate the core, format the video, and generate VHDL code for the FPGA

The ResultsDesign time reduced by 2/3VHDL training avoidedCollaborative development accomplished remotely

“We could not have implemented the algorithms on the FPGA without Simulink and Xilinx System Generator."

Malachy Devlin,Nallatech

Reconfigurable video encryption system.

www.mathworks.com/user_story

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Zyray Wireless develops low-cost semiconductor product with MathWorks tools

The ChallengeTo develop a low-cost semiconductor product based on 3G standards that handset manufacturers could combine with chips based on 2G standards

The SolutionUse MathWorks tools to develop algorithms and model the chip subsystems

The ResultsChip saves manufacturers millions of dollarsModels reused for production releaseDevelopment time cut in half

“MATLAB is an ideal environment for developing and understanding our algorithms. Simulink integrates well with MATLAB and lets us produce a design that looks very similar to what we end up with ultimately in hardware."

Francis SwartsZyray Wireless

SPINNERchip add-on WCDMA baseband processor

www.mathworks.com/user_story

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Yet, engineers are asking for…

Modeling of ever larger systemsManaging multi-team development projectsBetter integration with coding practicesExceed hand code performanceDesign more types of systems and components, including hardware Tighter integration of Simulink & MATLAB

These are the next set of challenges

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Simulink 6

Large-scale projects and end-to-end development

New domains and applications

…driving the evolution and adoption of Model-Based Design

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Simulink Family of ProductsSimulinkSignal Processing BlocksetCommunications BlocksetRF BlocksetFixed-point ToolboxSimulink Fixed PointFilter Design Toolbox– Filter Design HDL Coder

Link for ModelSimVideo and Image Processing BlocksetFamily of 45* products in total

*includes the 13 xPC TargetBox hardware products

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Simulink 6 for Large-Scale Projectsand End-to-End Development

Large-scale modeling and teams– Model Reference– Model Explorer

End-to-end embeddedsystem development– Embedded MATLAB Function Block – Fixed-point math – Production code– Test and verification

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From textbook to Model-Based Design

uwHny =

nn yde −=

∆uu∆uG H+

=λ

)(1 ∆Gu∆∆ H−←λ

*eGww +←

Output:

Error:

Gain vector(Mx1):

Inv. corr. matrix(MxM):

Weight update(Mx1):

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Demonstrations of Simulink 6 Family for New Domains and Applications

IEEE 802.11a wireless LAN model– RF Blockset– Embedded MATLAB Function

BlockImage stabilization– Video and Image Processing

Blockset

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DEMO: WLAN Communications Model

Description– End-to-end model of 802.11a

Wireless LAN physical layer

What you will see– One model for baseband, RF,

and channel– Fast time-domain RF simulation

with RF Blocksets– Embedded MATLAB function block

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WLAN Communications ModelEmbedded MATLAB Function Block

Blocks from new RF Blockset

Integration with the new RF Toolbox

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DEMO: Video Motion Stabilization

Description– Closed-loop embedded

video processing

What you will see– Video and Image

Processing Blockset– Code generation for TI

C6000 DSP

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Video Motion Stabilization

Double, single, integer

Code generation for TI C6000 DSP

New Video and Image Processing Blockset

Streaming video in Simulink

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Generate VHDL and Verilog Code for Fixed-point Filters from MATLAB

Filter Design HDL CoderFixed-point filters from Filter Design ToolboxEfficient, synthesizable, and portable VHDL or Verilog codeASIC or FPGA targetsAutomatic creation of VHDL, Verilog, and ModelSim test benches

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Co-simulate with ModelSim®

using Link for ModelSim

Links ModelSim PE or SE with MATLAB and SimulinkVHDLVerilog or SystemC with VHDL wrappers

Simulink ModelSim

24*as of 2003Q3

365* add-on products and services from partners that complement and extend MathWorks productsSpecialized third-party toolboxes for MATLABInterfaces to partners’ software and hardware productsSpecialized training courses and consulting servicesSystem integrators and suppliers that incorporate MathWorks’ products

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The MathWorks’ Family of Productswith Xilinx System Generator for DSP

Simulink

MATLAB

Stateflow

Blocksets

ANSI C andIntrinsics forMCUs & DSPs

Coders & Targets

Real-timeWorkshop

See your local MathWorks’ sales person for details on application-specific products

Toolboxes

HDL forXilinx FPGAs

DAQ CardsInstruments

Link for Code ComposerLink for ModelSim

Desktop Apps.Automated Reports

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SummarySimulink 6 brings:– Model-Based Design to large-scale

projects– More comprehensive coverage of

embedded system development – New domains and applications

Simulink continues to drive the evolution and adoption of Model-Based DesignVisit the web for morewww.mathworks.com/r14