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Radio over fibre (RoF) system and orthogonal frequency division multiplexing (OFDM) have attracted much interest for increasing the capacity and coverage area for future broadband wireless millimetre waves (mm-waves) at 60GHz [1, 2]. Fast OFDM (F-OFDM), another promising multicarrier scheme, reduces the subcarrier spacing to half of symbol rate per subcarrier [3]. When compared to the conventional...
We demonstrate the first experimental implementation of intensity-modulation and direct-detection 7.6Gb/s DBPSK-based DSB optical Fast-OFDM with a reduced subcarrier spacing equal to half of the symbol rate per subcarrier over 40km SMF.
We propose a novel method to achieve precise symbol synchronization using one training symbol in DSB optical fast OFDM (FOFDM). World-first FOFDM transmission experiment using field-installed fiber verifies its robustness to the noise and CD.
We propose offset-QAM based CoWDM, and show that the proposed system outperforms no-guard-interval optical OFDM and Nyquist WDM and enables the use of offset 4-, 16-, and 64-QAM with the performance approaching the theoretical limits.
We propose symmetric extension based guard interval (GI) to enable CD compensation with one-tap equalizers after discrete-cosine transform in optical fast-OFDM, and experimentally demonstrate 20Gbit/s 4-ASK transmission over 124km field-installed SMF with varied GI length.
In this paper, we review emerging technologies to build up Tb/s per channel transmission capacity. The different approaches, mainly based on various implementations of orthogonal frequency division multiplexing, Nyquist wavelength division multiplexing and optical time division multiplexing, are introduced and compared with respect to complexity, spectral efficiency and transmission reach. In addition...
Future optical networks will require the implementation of very high capacity (and therefore spectral efficient) technologies. Multi-carrier systems, such as Orthogonal Frequency Division Multiplexing (OFDM) and Coherent WDM (CoWDM), are promising candidates. In this paper, we present analytical, numerical, and experimental investigations of the impact of the relative phases between optical subcarriers...
We propose a novel discrete-cosine-transform based optical fast OFDM (FOFDM) to reduce the channel spacing to half of the symbol rate per carrier, and numerically evaluate the performance of 20Gbaud PSK and bipolar 4-ASK FOFDM.
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