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1. Optical Architectures Evaluation for Triple-Play Distribution in FIVER Project. Abstract
This paper proposes two fiber-to-the-home bi-directional architectures for triple-play distribution services as being investigated in FIVER project. First, a coarse wavelength division multiplexing (CWDM) architecture is proposed using two wavelengths per user one at 1550 nm and the other at 1300 nm for uplink and downlink information. The second architecture comprises a reflective component at customer premises what avoids the necessity of an expensive and hazardous laser at the user’s home. In the proposed architecture a reflective electro absorption transceiver (R-EAT) absorbs the 1300 nm wavelength (downstream information) and reflects and modulated the 1550 nm wavelength coming from the central office (upstream data). Both architectures are proposed and simulated with VPI photonics software. Experimental modelling showing the transmission of three wireless services (LTE, WiMAX and UWB) using radio-over-fiber techniques has been included in the simulations for comparison. Maximum architecture reach using standard single mode fiber (SSMF) was assessed. From these results it can be observed that the CWDM architecture with Mach-Zehnder achieves up to 83.3 km SSMF for the 1550 nm path and 54.6 km SSMF for the 1300 nm path. Analyzing the reflective architecture the SSMF maximum reach is 29.2 km for the absorbed 1300 nm path and 18.1 km for the reflected 1550 nm path. In this case, the reflective path performance is affected by the distortion effects of single-wavelength bidirectional transmission in the same optical fiber. However, all the ranges are in the line of conventional passive optical networks which reach is usually less than 20 km without using intermediate optical amplification levels or chromatic dispersion compensation.
2. Performance of a 60-GHz DCM-OFDM and BPSK-impulse ultra-wideband system with radio-over-fiber and wireless transmission employing a directly-modulated. Abstract
The performance of radio-over-fiber optical transmission employing vertical-cavity surface-emitting lasers (VCSELs), and further wireless transmission, of the two major ultra-wideband (UWB) implementations is reported when operating in the 60-GHz radio band. Performance is evaluated at 1.44 Gbit/s bitrate. The two UWB implementations considered employ dual-carrier modulation orthogonal frequency-division multiplexing (DCM-OFDM) and binary phase-shift keying impulse radio (BPSK-IR) modulation respectively. Optical transmission distances up to 40 km in standard single-mode fiber and up to 500 m in bend-insensitive single-mode fiber with wireless transmission up to 5 m in both cases is demonstrated with no penalty. A simulation analysis has also been performed in order to investigate the operational limits. The analysis results are in excellent agreement with the experimental work and indicate good tolerance to chromatic dispersion due to the chirp characteristics of electro-optical conversion when a directly-modulated VCSEL is employed. The performance comparison indicates that BPSK-IR UWB exhibits better tolerance to optical transmission impairments requiring lower received optical power than its DCM-OFDM UWB counterpart when operating in the 60-GHz band.
3. Full Standard Triple-Play Bi-Directional and Full-Duplex CWDM Transmission in Passive Optical Networks. Abstract
Bi-directional CWDM radio-over-fiber transmission of triple-format full-standard OFDM signals in coexistence (UWB, WiMAX and LTE) (1.178 Gbit/s full-duplex) is demonstrated over 50.6km SSMF in PON without amplification or regeneration stages.
4. ”Real World” FTTH Optical-to-Radio Interface Performance for Bi-directional Multi-Format OFDM Wireless Signal Transmission. Abstract
The optical-to-radio and radio-to-optical interfaces in fiber-to-the-home access networks were evaluated for LTE, WiMAX and UWB simultaneous distribution. Successful bi-directional transmission was achieved after 20.2km SSMF and 3m radio propagation.
5. Complete Mitigation of Brillouin Scattering Effects in Reflective Passive Optical Networks using Triple-Format OFDM Radio Signals. Abstract
Brillouin scattering is identified as a severe limitation in narrow line-width, bi-directional reflective systems. A spectrum management mitigation technique for triple-format OFDM signals is demonstrated over 15 km passive optical network using reflective electro-absorption transceivers.
6. Specialty Fiber Evaluation for In-building Distribution of Multiple-Format OFDM Radio Signals. Abstract
Optical fiber for deployment within home environment was investigated for distribution of triple-play services. Corning ClearCurve® single-mode bend-insensitive fiber permits installation over 200m reach compared to 50m with plastic multi-mode fiber.
7. Full Standard Triple-Play Bi-Directional and Full-Duplex CWDM Transmission in Passive Optical Networks”. Abstract
Bi-directional CWDM radio-over-fiber transmission of triple-format full-standard OFDM signals in coexistence (UWB, WiMAX and LTE) (1.178 Gbit/s full-duplex) is demonstrated over 50.6km SSMF in PON without amplification or regeneration stages.
8. Extension of the exhaustive Gaussian approach for BER estimation in experimental direct-detection OFDM setups. Abstract
An extension of the exhaustive Gaussian approach to estimate the bit error ratio from a set of experimental runs in direct detection orthogonal frequency division multiplexing optical communication systems is proposed. The approach provides fast and accurate bit error ratio estimates avoiding the high amount of data required by direct error counting.
9. Experimental Performance Comparison of 60 GHz DCM OFDM and Impulse BPSK Ultra-Wideband with Combined Optical Fibre and Wireless Transmission. Abstract
We present an experimental performance comparison of 1.44Gbps dual-carrier modulation OFDM and BPSK impulse-radio ultra-wideband in the 60GHz band with combined fibre, up to 40km, and 5m wireless transmission. Impulse-radio exhibits better dispersion tolerance requiring lower optical power.
10. Theoretical and experimental performance evaluation methods for DD-OFDM systems with optical amplification. Abstract
Several methods have been proposed to evaluate theoretically and experimentally the performance of optically amplified direct-detection orthogonal frequency division multiplexing systems. In this paper, we review those methods, and highlight their main advantages and disadvantages.
11. On the BER estimation of experimental direct detection OFDM systems. Abstract
We propose to extend the exhaustive Gaussian approach (EGA) to assess the bit error ratio (BER) of experimental direct detection optical orthogonal frequency division multiplexing setups. Excellent agreement between the actual probability density function (PDF) of each subcarrier and the Gaussian PDF estimated from a set of experimental runs is shown. The proposed EGA allows evaluate quickly the BER as only a few hundreds of runs are required to reach stabilized BER estimates. The BER estimated by EGA has shown an excellent agreement with the BER estimates provided by direct error counting.
12. Optical Technologies for Multi-Gbit/s Ultra-wideband Radio: From the Access to the Pico-cell. Abstract
This paper reports the latest developments in optical generation, transmission and electro-optical processing
techniques enabling wireless connectivity to a large number of users employing ultra-wideband (UWB) radio.
In particular, the latest advances in UWB generation at 60 GHz and ultra-low power sensing employing photonic analogue-to-digital converters are presented altogether with novel transmission architectures like UWB pico-cell clusters. The techniques herein reported permit the cost-effective spectrum-efficient provision of multi-Gigabit connectivity and present an enabling step to the introduction of cognitive techniques maximizing the overall network capacity.
13. OFDM-UWB Signal Distribution over Long-Reach PON Using Directly Modulated Lasers. Abstract
Performance evaluation of orthogonal frequency-division multiplexing (OFDM) ultra-wideband (UWB) radio signals distribution over standard single-mode fiber (SSMF), using binary phase-shift keying symbol mapping, is numerically assessed. A directly-modulated laser (DML) is used to transmit simultaneously four OFDM UWB sub-bands through SSMF. Some of the key system parameters that influence the transmission performance are identified and optimized through extensive simulations namely, the modulation-index, and the electrical and optical filters −3 dB bandwidths. Bit-error ratios in each UWB sub-band lower than 10−12 have been achieved for a dispersion of 1700 ps•nm−1, with a modulation-index of about 8.4%. Good system performance robustness to modulation-index, electrical and optical filter bandwidth variations is observed. The results presented in this work suggest the possibility of distributing several UWB sub-bands using DML in long-reach passive optical networks.
14. Baseband OFDM and Ultra Wide Band OFDM Signals Coexistence Requirements for Extended Reach PONs. Abstract
A first analysis of a transmission solution for providing Gigabit data access jointly with wireless high definition television down streaming (using orthogonal frequency division multiplexing – OFDM signals) on extended reach passive optical networks is investigated. The optimum power levels assigned to each OFDM signal in the proposed solution are obtained by numerical simulation. The coexistence of the two signals is shown however only up to 30 km of standard single mode fibre and a high optical signal to noise ratio 34 dB is required to obtain a bit error probability of 10-12. These values still need improvement for practical system implementation. It is shown that the high OSNR requirement is imposed by the baseband OFDM signal and that the power fading resulting from the fibre dispersion limits the system transmission range to the 30 km mentioned before.
15. A CD and OSNR-insensitive DGD monitoring technique for high-speed data using a low-speed detector. Abstract
A DGD monitoring technique using a low-speed detector for 40Gb/s-RZ data is experimentally demonstrated. RF power increment of 18dB, which is insensitive to CD and OSNR, is measured in the DGD range from 0 to 25ps
16. Optical generation with FTTH transmission of 60 GHz Impulse-Radio Ultra-wideband signals. Abstract
The photonic generation with dispersion-tolerant fiber distribution of impulse-radio ultra-wideband signals is proposed and experimentally demonstrated in the 60 GHz band suitable for multi-Gigabit wireless personal area connectivity in fiber-to-the-home networks.
17. Effect of multi-channel MB-OFDM UWB radio-over-fiber transmission using polarization multiplexed distribution in FTTH networks. Abstract
The effect of multi-channel MB-OFDM ultra-wideband radio-over fiber transmission using polarization multiplexing is experimentally analyzed. 25 km SSMF reach is achieved with 1.2% EVM distortion when transmitting three multiplexed channels with 0.7576 Bit/s/Hz spectral efficiency.
18. Analysis of Methods of Performance Evaluation of Direct-Detection Orthogonal Frequency Division Multiplexing Communication Systems. Abstract
The performance assessment of orthogonal frequency division multiplexing signals in direct-detection transmission systems by using the error vector magnitude and several bit error ratio approaches is analyzed and compared through numerical simulation. It is shown that excellent accuracy of the bit error ratio estimates is obtained by a semi-analytical Gaussian approach for all the orthogonal frequency division multiplexing system configurations analyzed and that the error vector magnitude only provides reliable estimates of the system performance when the system is dominantly impaired by noise. Additionally, a novel Q-factor approach for orthogonal frequency division multiplexing optical signals showing improved bit error ratio estimates is also presented.
Public deliverables
| Name |
Date |
| D2.1 “Scenarios identification and functional requirements” |
M3 (March 2010) |
| D2.2 “State-of-the-art of quintuple play services and femtocell networks” |
M3 (March 2010) |
| D2.3 “State-of-the-art of FTTH, in-building optical distribution and integrated wireless radio” |
M3 (March 2010) |
| D2.4 “State-of-the-art of OFDM optical/radio transmission impairment compensation” |
M3 (March 2010) |
| D2.5 “Convergence of quintuple play and femtocell services specification” |
M9 (Sept. 2010) |
| D3.1 “Report on optical transmission coexistence requirements” |
M9 (Sept. 2010) |
| D3.2 “Report on radio transmission coexistence requirements” |
M9 (Sept. 2010) |
| D5.1 “OFDM-GbE signal generation” |
M12 (Dec. 2010) |
| D5.4 “Report on off-the-shelf devices and user equipment” |
M21 (Sept. 2011) |
| D6.5 “Functionalities assessment and open-house demonstrator” |
M36 (Dec. 2012) |
| D7.1 “Project presentation and web-site set-up” |
M3 (March 2010) |
| D7.2 “Final report on dissemination” |
M36 (Dec. 2012) |
| D7.3 “Final report on technology tracking of OFDM-GbE, UWB, WiMAX and 60 GHz radio” |
M36 (Dec. 2012) |
| D7.4 “Regulatory framework, standardization and legal requirements” |
M36 (Dec. 2012) |
| D7.5 “Users forum report” |
M24 (Dec. 2011) |
| D8.1 “Scenarios identification and functional requirements |
M27 (March 2012) |
| D8.2 “Network architecture specification |
M29 (May 2012) |
| D8.7 “Final Report on on-the-field trial |
M36 (Dec 2012) |
In order to obtain a public deliverable referenced in the table above, please send an email specifying the document you require to:
fiveradmin [at] ntc.upv.es
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Bratislava (Slovakia)