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We review alternative solutions for optical fronthauling in next generation fixed-mobile converged architectures that try to solve the problems related to the extremely high bit rates required by current fronthauling implementations based on the so-called digitized Radio over Fiber (as for the CPRI or OBSAI standards). In particular, we present our most recent results on Digital Signal Processing...
In this paper we demonstrate the transmission of LTE channels with the DSP-based channel aggregation, for front-hauling applications, over at least a class N1 PON, ranging from EVM=4% for 24 channels up to EVM=8% for 96 channels.
In this paper we present our final results on the real-time implementation on an FPGA platform of the digital signal processing required in the FDMA-PON architecture studied in the EU project "FABULOUS". ". For the first time, we demonstrated simultaneous upstream and downstream real-time transmission capable of carrying Gigabit Ethernet bidirectional traffic to each ONU.
We present a final demonstration of upstream FDMA-PON transmission on the EU project FABULOUS architecture. We show WDM capability over four wavelengths, each carrying 32 Gbps at 31 dB ODN loss, and DSP real time implementation on a commercial FPGA.
Some of the proposed NG-PON2 architectures encompass coherent receivers. In this scenario, we investigate the use of commercial DFB lasers, rather than more expensive ECL, showing negligible penalty for 40 Gbps PM-QPSK.
The use of standard 1-mm core-diameter step-index plastic optical fiber (SI-POF) has so far been mainly limited to distances of up to 100 m and bit-rates in the order of 100 Mbit/s. By use of digital signal processing, transmission performance of such optical links can be improved. Among the different technical solutions proposed, a promising one is based on the use of discrete multitone (DMT) modulation,...
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