ee 233. lightwave systems chapter 8b. multichannel ...ee233/sp06/lectures/chap...chapter 8b....
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![Page 1: EE 233. LIGHTWAVE SYSTEMS Chapter 8B. Multichannel ...ee233/sp06/lectures/Chap...Chapter 8B. Multichannel Systems[subcarrier mux] Instructor: Ivan P. Kaminow 4/11/06 ee233. Prof Kaminow](https://reader033.vdocuments.mx/reader033/viewer/2022060518/604b73f33d519610dd18c3e3/html5/thumbnails/1.jpg)
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EE 233. LIGHTWAVESYSTEMS
Chapter 8B. MultichannelSystems[subcarrier mux]
Instructor:Ivan P. Kaminow
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SUBCARRIERMULTIPLEXING;
HYBRID FIBER COAX(HFC)
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HFC
• Hybrid Fiber-Coax Network: Comcast• MSO = multiple service operator = cable
service provider• CATV = community antenna TV = cable
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Coax to HFC
HEHE
X-L LU
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Coax to HFC
HEHE
FN
FN
FN
Increase transport capability Improve quality and reliability
Challenge for linear lightwave
X-L LU
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CABLE SPECTRUM
• 5 - 42 MHz: upstream applications• 50 - 500 MHz: downstream analog
apps• 550 - 1000+ MHz: emerging digital
apps• 6 MHz subcarrier channel spacing
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AGRAWAL
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PHILLIPS& DARCIE
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PHILLIPS &DARCIE
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X-L LU &SNEIZKO
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X-L LU &SNEIZKO
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PHILLIPS &DARCIE
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CHALLENGES OF AM-VSBTRANSMISSION
XTR RCV
Requirements:
CNR 52dB 47dB
CTB/CSO -65dBc -55dBc
Challenges:
- Linearity - Dispersion - Linearity- Noise - Reflection - Noise- Chirp - Others
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Desurvire
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Desurvire
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DESURVIRE
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The End