1 / 19

Broadband Access Solutions on a Common CWDM Platform

Broadband Access Solutions on a Common CWDM Platform. K. Habel , K.-D. Langer (HHI) G.-J. Rijckenberg, A. Ng’oma, T. Koonen, (TU/e) J. Lepley, S. Walker (UoE). Outline. Introduction/ Motivation Description of developed solutions CWDM Rings VDSLoO FWA Experimental results Conclusion.

pier
Download Presentation

Broadband Access Solutions on a Common CWDM Platform

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Broadband Access Solutions on a Common CWDM Platform K. Habel, K.-D. Langer (HHI)G.-J. Rijckenberg, A. Ng’oma, T. Koonen, (TU/e)J. Lepley, S. Walker (UoE)

  2. Outline • Introduction/ Motivation • Description of developed solutions • CWDM Rings • VDSLoO • FWA • Experimental results • Conclusion

  3. Introduction/Motivation • Demand for high-speed access solutions is rising • Triggered by “new” services like VoIP, IPTV, VoD, … • IST project MUSE aims for cost-efficient solutions for a multi-provider multi-service access network • MUSE results with respect to optical access presented • Three particular optical access solutions have been developed: • A CWDM Ring architecture: provides protected FttX connectivity and feeder network for other First Mile • Analogue VDSL over optics architecture: transmits VDSL signals over an optical carrier by means of SCM • Fixed Wireless Access (FWA): based on a Radio over Fibre (RoF) using Optical Frequency Multiplication (OFM) • Solutions developed independently, but have been integrated for testing on common CWDM Ring platform for joint experiment

  4. Setup Overview • Optical feeder carrying three technologies • Demonstration of interoperability on physical layer • Combination of analogue and digital signals  distortions?

  5. nm 1300 1400 1500 1600 CWDM, what was it again? • ITU-T G.694.2: 18 -channels with 20 nm spacing • Large channel spacing allows: • un-cooled lasers (temperature dependence) • relaxed manufacturing tolerances • Easier filter design (compared to DWDM)  low-cost • Better usage of fibre bandwidth compared to established access systems (1310/1490/1550nm) • More expensive than single channel solutions • Less expensive than DWDM systems

  6. Outline • Introduction • Description of developed solutions • CWDM Rings • VDSLoO • FWA • Experimental results • Conclusion

  7. CWDM Rings system: lab setup (HHI) Feeder area ring Distribution area ring Customer(s) ONU #1 Hub (CO) MUX DMUX OADM SFP-TRx toMetrodomain PC Linux SFP-TRx SFP-TRx Normal path OADM ONU #2 PC Linux SFP-TRx SFP-TRx Protection path SFP-TRx EthernetSwitch DMUX MUX Customer(s) • CWDM feeder ring with: up to 20km length, up to 9 remote nodes and 18 -channels • single wavelength distribution ring (can be grey by using a media converter) • System provides protected path to ONUs

  8.            200 300 400 VDSL over optics (OLT) 4x CO DSLAM OLT DC HPF COmodem Optical LO Interface DFB-Laser Downstream COmodem Circ. Upstream 4100base-T COmodem Photodiode -20 rel- PSD (dBm) COmodem -60 -100 60 MHz channel separation 4 channels using 998-138-1200 VDSL band plan Frequency (MHz)

  9.   200 300 400 VDSL over optics (ONU) • Simple ONU design • Low power consumption (ideal for remote cabinets) • Low foot-print Optical Interface DFB-LD ONU HPF 100BASE-T Upstream CPE modem LO Downstream DC Photodiode -20 rel. PSD (dBm) -60 -100 Frequency (MHz)

  10. t BPF1 BPF2 fmm – fshift fmm fmm + fshift FWA system: Bi-directional OFM system with remote LO (TU/e) Headend station Radio Access Point antenna periodic BPF Fiber link fsw fmm PD circulator BPF1 MZI Mod. tun. LD WDM WDM MPA LNA l0 l0 l0 BPF2 l1 BPF1 data down LD fshift x DAC fIF l1 DSP l1 mixer AGC •(De)modulation •Filtering •Synchronisation BPF ADC PD data up

  11. Outline • Introduction • Description of developed solutions • CWDM Rings • VDSLoO • FWA • Experimental results • Conclusion

  12. VDSL VDSLoO ONU ONU e.g. WiMAX FWA RAP RAP ONU ONU shared ONU ONU DAR (GbE) with protection GbE Trial setup overview Two counter-propagatingfibre rings (10km) CWDM OLT OLT FAR feeder metro CO distribution home

  13. CWDM channel comb 16 channels (20nm spacing) CWDM protection CWDM signal after MUX @ CO CWDM signal after remote node 2

  14. 1E-3 1E-3 1E-4 1E-4 1E-5 1E-5 1E-6 1E-6 1E-7 1E-7 1E-8 1E-8 1E-9 1E-9 1E-10 1E-10 -29,5 -29,0 -28,5 -28,0 -27,5 -27,0 -26,5 -26,0 -29,5 -29,0 -28,5 -28,0 -27,5 -27,0 -26,5 -26,0 CWDM Rings: Comparison of Receiver Sensitivity back-to-back back-to-back stand alone trial stand alone trial integrated integrated BER BER protection path normal path upstream downstream R = 1.25 Gb/s R = 1.25 Gb/s P [dBm] P [dBm] Rx Rx protection path (downlink) Sensitivity: ~-27 dBm Penalty: ~0.1 dB normal path (uplink) Sensitivity: ~-27 dBm Penalty: ~0.3 dB

  15. Downstream @ Antenna station: very pure carriers with a few Hz linewith Upstream (received): Bidirectional system shown FWA: Measured spectra for up- and downstream ~17.2 GHz ~1.1 GHz

  16. FWA: Measured EVM and SNR parameters of the recovered upstream data VSA (vector signal analyser)measurements: • 16 QAM constellation diagram • 100 Mbps bitrate • Transmission over the CWDM Ring with other systems also active –IF at 1.1 GHz • EVM of <6% for all cases, compliant with WiMax standard

  17. VDSLoO: Bit Loading characteristic • aggregate downstream (blue) rate = 19 Mbps • upstream (red) rate = 10.6 Mbps • data transmission efficiency  25 … 30%, caused by EMI • 70% efficiency has been shown in stand-alone setup • Interchannel crosstalk measured at <23 dB for 30 MHz channel spacing

  18. Conclusions • Feasibility of an integrated passive CWDM feeder ring with protection shown (up to 20 km possible) • Three different prototypes: FWA, VDSLoO, and CWDM Rings integrated into one optical access system • Systems did not interfere with each other and have same characteristics compared to stand-alone setups • CWDM technology allows for various feeder architectures (ring, star, …) and can carry different types of distribution technologies

  19. End Thank you for your attention, By the way parts of this setup arer shown at the foyer

More Related