Advanced Signal Processing and Communications with MATLAB and SIMULINKMarc Barberis – Application Engineering Group, MathWorks Inc.

AGENDAAGENDA

• Advanced Signal Processing and Communication Capabilities– What are system toolboxes?

– Signal Processing with the DSP System Toolbox

– Communications with the Communications System Toolbox– Communications with the Communications System Toolbox

• Designing a Multi-Gigabyte Transmission System (SERDES)– Extracting RF Parameters from the backplane

– Modeling the backplane

– Developing Clock Recovery and Equalization algorithms– Developing Clock Recovery and Equalization algorithms

• Conclusion

Advanced Signal Processing and Advanced Signal Processing and Communication Capabilities

System Toolboxes

Signal Processing Blockset

DSPSystem Toolbox

Communications Communications

Filter DesignToolbox

CommunicationsCommunicationsToolbox

CommunicationsSystem Toolbox

CommunicationsBlockset

Video and ImageProcessing

Blockset

Computer VisionSystem Toolbox

New FeaturesBlockset System Toolbox

System Objects

• What are system objects?• What are system objects?

• System objects bring advanced design options and implementation-oriented

State-based algorithms optimized for streaming simulations...

…that support fixed-point arithmetic and C code generation.

• System objects bring advanced design options and implementation-oriented

system modeling to MATLAB

>> Demo

For Analysis and Algorithms: Signal Processing Toolbox

• Time and frequency domain signal analysis and visualization

Basic Tools for Signal Processing Design

• Time and frequency domain signal analysis and visualization

• Waveforms, linear prediction, time-series, and spectral estimation

• Industry-standard analog and digital FIR and IIR filter design

For Systems: DSP System Toolbox

• Streaming and multi-rate algorithms for real-time DSP systems

• Fixed-point, C/HDL code generation, and hardware connectivity

• Multi-rate and adaptive filter design; signal and spectrum scopes

DSP System ToolboxOver 300 algorithms for

– Advanced filter design – Advanced filter design

– FFTs

– Multirate DSP

– Linear algebra routines

Algorithm libraries in MATLAB Algorithm libraries in Simulink

Demo:Adaptive Noise Cancellation of Streaming Audio

� Use System objects to maintain filter states automatically� Use System objects to maintain filter states automatically

� Visualize changing filter coefficients as they adapt to input signal

� Listen to output audio in real-time

Modeling real-time signal processing systems

• Streaming algorithms in DSP System Toolbox provide• Streaming algorithms in DSP System Toolbox provide

� Implicit data buffering, state management and indexing

�Simulation speed-up by reducing overhead

MATLAB MemoryMATLAB Memory

StreamSource

StreamProcessing

Model Dynamic Systems in MATLAB:System Toolboxes and System objects

Represent dynamic systemsRepresent dynamic systems• Multiple tasks: validation, initialize, output, reset, terminate

Separate Declaration from Execution• Declaration: State initializations, Parameter validation

• Execution: Output computation (step)

Benefits of System Objects

• Rich set of algorithms for design in MATLAB or Simulink• Rich set of algorithms for design in MATLAB or Simulink

• Stream and batch signal processing

• Fixed-point and floating point support• Fixed-point and floating point support

• C code generation from MATLAB or Simulink

Communications System Toolbox

Over 100 algorithms for

– Modulation, Interleaving, Channels, Source Coding

Algorithm libraries in MATLAB Algorithm libraries in Simulink

– Modulation, Interleaving, Channels, Source Coding

– Error Coding and Correction

– MIMO, Equalizers, Synchronization

– Sources and Sinks, SDR hardware

Algorithm libraries in MATLAB Algorithm libraries in Simulink

4G Building blocks• QPSK Modulation

• Turbo Code (Soft Decision)• Turbo Code (Soft Decision)

• OFDM

• MIMO (Space Time Block Codes)

h1,2

h1,1

h2,1X Y

Multiple Input Multiple Outputh4,4

System Toolboxes

• Rich set of algorithms for design in MATLAB or Simulink• Rich set of algorithms for design in MATLAB or Simulink

• Stream and batch signal processing

• Fixed-point and floating point support• Fixed-point and floating point support

• C code generation from MATLAB or Simulink

• Growing HDL code generation support• Growing HDL code generation support

Designing a Multi-GigabyteTransmission System (SERDES)

What is a SERDES?

Goal: Transfer data at very high speed using a Multi-Gigabit Serial Link

Serializer-Deserializer

Goal: Transfer data at very high speed using a Multi-Gigabit Serial Link (backplane)

Extract the RF Characteristics of the Gigabit Link

• Connect Vector Network Analyzer to back plane • Connect Vector Network Analyzer to back plane

• control VNA measurement with Instrument Control Toolbox

• measure S-parameters

• optionally de-embed test fixture effects• optionally de-embed test fixture effects

with MATLAB and RF Toolbox

Instrument Control ToolboxControl and communicate with scientific instruments

• Integrate instruments into MATLAB

applications and Simulink models

• Interactive tool for detecting and

controlling instruments controlling instruments

• Automatic code generation for faster and

easier implementation

• Support for IVI, VXIplug&play, and MATLAB

instrument drivers instrument drivers

• Support for common communication

protocols

Analyzing S-Parameters with RF Toolbox

• Visualize frequency domain responses for magnitude and phasedomain responses for magnitude and phase

• Rational fitting calculated for a port-pair configuration

• Export generated rational functions to a Verilog-A file, a Simulink model or RF data object

• De-embed test fixture effect

Mixed-Domain SimulationModel from previous

steps (RF Toolbox)

Benefits of Simulink for System Modeling

• Fast Simulation engine

• Mixed-Domain simulation

– Discrete and analog signals– Discrete and analog signals

• Interactivity

• Rich set of libraries to draw from

• Integration with MATLAB

MATLAB and Simulink forSignal Processing and Communications

• System Toolboxes

– Advanced algorithms

– Streaming, fixed-point and C code generation support– Streaming, fixed-point and C code generation support

• Mixed-Domain Simulation

– Fast simulation of mixed analog & digital systems

– Modeling of RF parts– Modeling of RF parts