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We demonstrated multiple-FDMA co-coexisted PON uplink transmission using the real-time ONU transmitter prototype. Flexible bandwidth assignment to multiplexed 3-ONU and the distance-adaptive capability is successfully indicated.
We discuss two technology options beyond NG-PON2, including energy-efficient digital coherent interleaved frequency division multiple access (IFDMA)-WDM which enables elastic bandwidth provisioning and OCDMA-WDM using wavelength-flattened en/decoder which highlights 10Gb/s symmeric bandwidth provisioning per subscriber.
We demonstrate 300-GHz-band radio transmission with a digital coherent detection technique. Quadrature-phase-shift-keying modulation can provide a data rate of 29.9 Gb/s, with 7% forward error correction overhead. A frequency-locked optical frequency comb for a 300-GHz radio-over-fiber signal can be generated by a recirculating frequency shifter with a singlesideband suppressed-carrier modulator in...
We successfully demonstrate 20-Gbaud (37.38 Gb/s) QPSK RoF and 100-GHz radio transmission over 20-km SMF and 0.3-m air. ADC with a bandwidth of 30 GHz can demodulate 40-GHz-bandwidth signal using digital coherent detection technique.
We present a novel bandwidth-elastic and power-efficient coherent PON architecture based on interleaved frequency division multiple access (IFDMA) technique and experimentally demonstrate the coherent IFDMA-PON uplink transmission via 2xONUs with free-running sources.
In this talk, our recent R&D activities a green, elastic next-generation (NG) access network based upon coherent interleaved-frequency division multiple access (IFDMA), a special class of OFDMA will be presented. Conventional OFDMA systems require power-consuming IFFT in the transmitter. It will be shown that “Green” can be realized in the generation of IFDMA signals by replacing the IFFT circuit...
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