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We have proposed a Fr-OFDM based serial-to-parallel conversion scheme and experimentally verified the preliminary operation using a 10 GHz serial signal. The experimental results show that a serial data is successfully received in parallel.
We propose and test a coherent all-optical orthogonal frequency-division multiplexing (AO-OFDM) system, based on all-optical (de)multiplexing and coherent detection, for multiterabit per second (multi-Tbit/s) passive optical networks (PONs). The proposed approach allows us to greatly increase the downstream data rate per user and extend the standard single-mode fiber reach for future long-reach applications...
We verify an insertion effect of cyclic prefix for reduction of inter channel interference in all-optical fractional OFDM system. Since fractional OFDM has an intermediate characteristic between OFDM and Nyquist-OTDM, a certain degree of effect of cyclic prefix is expected in fractional OFDM. The results of bit error rate measurement of a 4×10 Gbit/s DBPSK all-optical fractional OFDM system show that...
We demonstrate for the first time optical fractional OFDM system, based on intermediate grids between time and frequency axes. Using reconfigurable wavelength selective switches, we demonstrated open eye diagrams, and performance below the FEC-limit.
We demonstrate an optical packet switching system based on 8 × 12.5 Gb/s all-optical orthogonal frequency division multiplexing and semiconductor optical amplifier-based switch. The bit-error-rate shows 0.5 dB power penalty due to the switching.
We have developed a new 60-GHz band millimeter wave multi-gigabit wireless local area network (WLAN) system that achieves a throughput of more than 1 Gbps. The developed system consists of high-gain eight-sector antenna, physical layer (PHY) for orthogonal frequency multiple access (OFDM) modulation/demodulation, and media access control (MAC) for time and space resource control on point to multi-point...
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