FDMA PON Theoretical Model and Capacity Evaluation

Abstract

International audienc

Demonstration of Upstream WDM+FDMA Reflective PON and Real-Time Implementation on an FPGA Platform

“…To perform this study, we used the previously mentioned numerical model derived in [10] that closely matches the experimental performance we obtained so far (such as those shown in Fig. 2, 3 and 4, with parameters shown in previous Tab.…”

“…We also developed a numerical model that allows to predict the theoretical upstream BER as a function of system parameter. The model is directly taken from [10] and uses the parameter shown in the following Table III, which are directly taken from the experimental setup. It turned out that the ultimate BER of this system is limited by the ONU SOAs ASE noise and by the noise of the OLT coherent receiver.…”

“…The performances are even more impressive when using a 33 GHz modulator, reaching for example 72 Gbps satisfying class N2, depending on the number of users. A global analysis of all the rows of Table III shows the system flexibility that can be achieved using the proposed upstream architecture; an even higher level can be obtained if, as shown in [10], one assumes that the modulation format and bit rate per ONU is adapted on the actual ODN loss seen by each specific ONU.…”

Review and comparative assessment of FDMA-PON vs. TDMA-PON for next-generation optical access networks

“…10 GHz) using a pure electrical FDMA multiplexing (and not OFDMA, like in most of the previously described projects), inserting spectral guard-bands between the spectral slices assigned to each ONU. o This approach allows for an easy electrical sub-band multiplexing and demultiplexing at the ONU side, that can thus operate its DSP only on relatively small electrical bands after electrical down-conversion [37]. It should be noted that sub-band processing is also possible in an OFDMA approach but, due to the lack of guard-bands, the DSP requirements are more stringent that in FDMA.…”

“…We presented our most recent experimental results in [34] for the upstream transmission (which is the real key focus of the FABULOUS project) and in [35] for the downstream, while a very detailed analysis of the architecture capacity is given in [37].…”