access ic lab graduate institute of electronics engineering, ntu adaptive signal processing...

ACCESS IC LAB

Graduate Institute of Electronics Engineering, NTU

Adaptive Signal ProcessingAdaptive Signal Processing-Equalization--Equalization-

Ben

Advisor: Prof. An-Yeu Wu

2008/01/22

ACCESS IC LAB Graduate Institute of Electronics Engineering, NTU

pp. 2

OutlineOutline

Introduction Applications What You Will Learn Background Needed

ACCESS IC LAB Graduate Institute of Electronics Engineering, NTU

pp. 3

What’s Equalization? (1/2)What’s Equalization? (1/2)

CommunicationChannel

u(n)t(n)Equalizer y(n)

( Eliminate Noise and Channel Effect)

ACCESS IC LAB Graduate Institute of Electronics Engineering, NTU

pp. 4

What’s Equalization? (2/2)What’s Equalization? (2/2)

Without Equalization With Equalization

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2

x 104

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

index n

Am

plitu

de

Without Equalization

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2

x 104

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

index n

Am

plitu

de

With Equalization

ACCESS IC LAB Graduate Institute of Electronics Engineering, NTU

pp. 5

Application I: 10 Gigabit Ethernet Application I: 10 Gigabit Ethernet

THP Encoding DAC

Hybrid

THP Encoding DAC

Hybrid

LDPC Encoder

LDPC Decoder

PAM12 Mapper

framer

Deframer

XG

MII

THP Encoding DAC

Hybrid

THP Encoding

ADC

DAC

Hybrid

FFE

Echo Canceller

THPNEXT CancellerNEXT

Canceller

+

++

x4

FEXT CancellerFEXT

CancellerFEXT

Canceller

Equalizer Design!!

ACCESS IC LAB Graduate Institute of Electronics Engineering, NTU

pp. 6

Application II: Neural NetworkApplication II: Neural Network

突觸

(神經細胞之 )

軸索 EqualizationPattern RecognitionControlOptical Communicationetc…

ACCESS IC LAB Graduate Institute of Electronics Engineering, NTU

pp. 7

Application III: High Definition TV Application III: High Definition TV (HDTV)(HDTV)

ATSC EQ

ACCESS IC LAB Graduate Institute of Electronics Engineering, NTU

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Application IV: Wireless SystemApplication IV: Wireless System

ACCESS IC LAB Graduate Institute of Electronics Engineering, NTU

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Why Equalization So Important?Why Equalization So Important?

There must be a equalization technique for any communication system

Equalizer design is very important in any communication system !!!

Channel Decoder

FFE

+

errore(n)

symbols(n)

Compensate ISI terms Compensate AWGN

ACCESS IC LAB Graduate Institute of Electronics Engineering, NTU

pp. 10

What You Will LearnWhat You Will Learn

Adaptive EqualizationArchitecture

DSPVLSI

Design

AdaptiveEqualization

Algorithm

EqualizerDesign

ACCESS IC LAB Graduate Institute of Electronics Engineering, NTU

pp. 11

Expected ResultExpected Result

Paper survey Algorithm domain Architecture domain

Study advanced signal processing Matlab simulation of equalizer design Presentation skills

ACCESS IC LAB Graduate Institute of Electronics Engineering, NTU

pp. 12

Background NeededBackground Needed

Signal and Systems Matlab or C Enthusiasm