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- Cheng Zhang, Jun Duan, Juhao Li, Weiwei Hu, Hongbin Li, Hequan Wu, and Zhangyuan Chen.
- State Key Laboratory on Advanced Optical Communication Systems & Networks, Peking University, Beijing, China.
- Opt Express. 2010 Aug 30;18(18):19429-37.
AbstractWe have proposed and experimentally demonstrated a 60-GHz bidirectional radio-over-fiber system with downstream orthogonal frequency division multiplexing address (OFDMA) and wavelength reuse upstream single-carrier frequency division multiple address (SC-FDMA). In the downstream, a 3-dB optical coupler is used for two-carrier injection-locking a distributed feedback (DFB) laser in order to realize the single-sideband modulation. In the upstream, the weakly modulated one of the two downstream carriers is filtered out for wavelength reuse. Transmission of 9.65-Gb/s 16-QAM downstream OFDMA on 60-GHz carrier and 5-Gb/s QPSK upstream SC-FDMA (2.5 Gb/s for each user) are both successfully demonstrated over 53-km standard single mode fiber without chromatic dispersion compensation. The crosstalk between the downstream OFDMA and the upstream SC-FDMA can be neglected.
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