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百億位元乙太網路之基頻數位訊號處理設計 10GBase-T Ethernet Baseband DSP Design-Equalizer. Ben Advisor: Prof. An-Yeu Wu 2007/03/07. Outline. 10GBase-T Ethernet Introduction Problem Statement Equalization What You Will Learn Expected Result Background Needed. 10GBase-T Ethernet Introduction. - PowerPoint PPT Presentation
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ACCESS IC LAB
Graduate Institute of Electronics Engineering, NTU
百億位元乙太網路之基頻數位訊號處理設計百億位元乙太網路之基頻數位訊號處理設計10GBase-T Ethernet Baseband DSP Design-10GBase-T Ethernet Baseband DSP Design-
EqualizerEqualizer
Ben
Advisor: Prof. An-Yeu Wu
2007/03/07
ACCESS IC LAB Graduate Institute of Electronics Engineering, NTU
pp. 2
OutlineOutline
10GBase-T Ethernet Introduction Problem Statement Equalization What You Will Learn Expected Result Background Needed
ACCESS IC LAB Graduate Institute of Electronics Engineering, NTU
pp. 3
10GBase-T Ethernet Introduction10GBase-T Ethernet Introduction Full-Duplex Transmission Operation over 4 twisted-pair copper line Link Distance
At least 100m on Class F (UTP Cat 7) At least 55m Class E (UTP Cat 6)
Line Code PAM 12 modulation @ 833MHz LDPC (833,1024)
ACCESS IC LAB Graduate Institute of Electronics Engineering, NTU
pp. 4
MotivationMotivation
ACCESS IC LAB Graduate Institute of Electronics Engineering, NTU
pp. 5
Problem StatementProblem Statement
10GBase-T Ethernet over UPTNEXT: Near End CrosstalkFEXT: Far End Crosstalk
ACCESS IC LAB Graduate Institute of Electronics Engineering, NTU
pp. 6
GoalGoal
Low Cost Design High Throughput 1010 bps Output SNR greater than
23.8dB BER less than 10-12
LDPC Decoder
SNR = 23.8dB
Equalizer
FFE
+
errore(n)
symbols(n)
BER = 10-12
ACCESS IC LAB Graduate Institute of Electronics Engineering, NTU
pp. 7
10GBase-T Transceiver Architecture10GBase-T Transceiver Architecture
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. 8
What’s Equalization? (1/2)What’s Equalization? (1/2) Simple communication system
ChannelC(n)
Noiseq(n)
EqualizerE(n)
X(n) Y(n)
( ) ( ) ( ) ( ) ( )* ( )Y n C n E n X n E n q n
( ) ( ) ( )
( ) ( )
n d X n q n
X n d q n
ACCESS IC LAB Graduate Institute of Electronics Engineering, NTU
pp. 9
What’s Equalization? (2/2)What’s Equalization? (2/2)
Without Equalization 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
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. 10
Why Equalization So Important?Why Equalization So Important?
Equalization is widely used in many communication systems Wireless communication system
OFDM system
Wireline communication system ADSL
Storage system Optical & Magnetic
There must be a equalization technique for any communication system
Equalizer design is very important in any communication system !!!
ACCESS IC LAB Graduate Institute of Electronics Engineering, NTU
pp. 11
What You Will LearnWhat You Will Learn
Adaptive EqualizationArchitecture
DSPVLSI
Design
AdaptiveEqualization
Algorithm
EqualizerDesign
ACCESS IC LAB Graduate Institute of Electronics Engineering, NTU
pp. 12
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. 13
Background NeededBackground Needed
Signal and Systems Matlab (optional) Enthusiasm
