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| 18.11.2011 |
This paper demonstrates the feasibility of optical/wireless convergence based on Digital-over-Fiber propagation. Network modelling results confirm the transmission of 16 CPRI signals up to 100km OFDMA-PON infrastructures achieving 40 Gbit/s total aggregate rates.
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| 18.11.2011 |
This paper is tackling the issue that stem from the coexistence of diverse technologies, such as emerging OFDMA-PON and WiMAX/LTE, within the same infrastructure. It outlines the key requirements that need to be fulfilled for the backhauling links supporting next generation wireless standards. These links should provide long reach as well as low-cost remote radio base stations coupled with centralised processing. To that extent, the industrial standard simulation platforms were used to evaluate the key network features from the PHY perspective gained by the convergence. The network modelling results confirm the transmission of 16 CPRI
signals up to 100km OFDMA-PON infrastructures achieving 40 Gbit/s total aggregate data rates.
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| 18.11.2011 |
A quality of service (QoS) aware medium access control (MAC) protocol is presented for next generation OFDMA-PONs. The end-to-end delay and network throughput are investigated in the presence of class-of-service and service-level differentiation. In addition, this paper proposes a new dynamic subcarrier allocation(DSA) algorithm. The monitoring window time technique is used where OLT measures the state of the ONU's queue instead of exchanging traditional report messages. As a result, the end-to-end packet delay of high and middle SLAs is less than 0.7 ms even if the ONU offered load is 1.0. The packet delay of the high priority traffic class regardless of SLA levels is however less than 0.6 ms. The total network throughput is 97 % of total capacity.
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| 23.08.2011 |
Publication from INDIN'2011 conference, made by partner of ACCORDANCE project - Karlsruhe University of Technology
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| 29.06.2011 |
A simple method for wavelength control of economical random non-preselected independent ONU source, by OLT monitoring and thermal tuning, is presented and dimensioned. It reduces the spectral overlap probability and increases the cost-effectiveness of an OFDMA-PON.
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