Hfr, Inc. · KRX:230240
Hfr — Technical Presentation (July 2000)
9 slides from Hfr's technical presentation, Jul 13, 2000
Slide 1: WDM Radio Access Network (WDM Microcell System)
WDM Radio Access Network (WDM Microcell System) 2000.7.13 HFR, Inc. for Mobile Internet
Slide 2: System Configurations
HFR, Inc. for Mobile Internet SYSTEM CONFIGURATIONS CDMA TX RF Carrier Analog E/O E/O E/O E/O BTS γ α (a) : CDMA 800 MHz RF Analog E/O S S 10 MHz GPS 4.95 MHz Signal S IF CDMA Carriers (FAs, Sectors) (b) WDM : CDMA 800 MHz IF/RF WDM GPS Signal with Clock Signal D/A A/D Digital D/A E/O O/E E/O A/D D/
Slide 3: Techno-Economic Analysis Issues
HFR, Inc. for Mobile Internet TECHNO- ECHNO-ECONOMIC ANALYSIS B ISSUES B ❧ (Economics) : , ❧ (Reliability) : ❧ (Expansiveness) : FA . IS-95C, IMT-2000 . ❧ (Functionality) (Applicability) : , / , ❧ (Intellectual Proprietary) : ❧ (Time-To-Market) : , , 3
Slide 4: Economics
HFR, Inc. for Mobile Internet ECONOMICS • 4 3 • 2.5 km 10 km • 800 , 2000 • 25 / /km/core • 3 ( ) 42 % Sav ing 4
Slide 5: Fiber Reduction
HFR, Inc. for Mobile Internet FIBER REDUCTION • Bus star topology / , WDM (IMT-2000) , . 4 km 2 km 3 km 3 km 4 km BTS Site • WDM Fiber = 16 km (400 / ) Fiber = 9 km (225 / ) 5
Slide 6: Reliability
HFR, Inc. for Mobile Internet RELIABILITY • PON(Passive Optical Network) . (Reliability) . 99.99% Availability . [WDM ] • Passive redundancy . • Active Node : Redundancy (Self-healing) . Core , . 6
Slide 7: Expansiveness: CWDM/DWDM
HFR, Inc. for Mobile Internet EXPANSIVENESS : CWDM/DWDM D-WDM (dense WDM) : , . 3~4 Coarse WDM . WDM . * : CWDM . * : DWDM λ11 From/to BTS E/O WDM Analog S λ21 [ Dense-WDM ] CDMA RF O/E • RF DEMUX DWDM O/E λ22 • Passive (1-core ) • (IS-95C, IMT-2000) O/E • λ23 7
Slide 8: Performance
HFR, Inc. for Mobile Internet PERFORMANCE • WDM ( ) IF RF ( ) IS-95C, HDR, IMT-2000 ( ) ( ) Noise Figure (NF) 10log10( ) ( ) ( ) km ( ) 15 14 13 WDM 12 11 • 10 Noise Figure (dB) ( ) 9 8 • 10 km 4 7 • : IS-97 6 5 • 4 • 3 2 1 1 2 3 4 5 6 7 8 Number of Sectors (or Drops) 8
Slide 9: Concluding Remarks
HFR, Inc. for Mobile Internet CONCLUDING REMARKS [ ] 50 9