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We propose and experimentally investigate digital nonlinear compensation and inter-channel cross talk suppression for 4×160.8Gb/s DWDM PDM-QPSK transmission with simplified heterodyne coherent detection. The BER has been improved from 5.7×10-3 to 3.5×10-4 after 1300km SMF-28.
In this paper, we propose a novel method to reduce the high peak-to-average power ratio (PAPR) of the optical orthogonal frequency division multiplexing (OFDM) signal. The method is based on the technique of the Hadamard transform combined with a companding transform. We experimentally demonstrate that, in an optical intensity-modulation direct-detection OFDM transmission system, the hybrid method...
In this paper, We propose a single sideband RoF system based on MSK modulation. One sideband of terahertz wave undergoes the single sideband MSK modulation while the terahertz wave is obtained via carrier-suppression double sideband modulation. The BER performance achieves 1 × 10-9 and the sensitivity of the receiver is -17.8dBm with a data rate of 5Gb/s after 40km transmission.
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