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This paper presents a simple photonic frequency up-conversion system based on direct modulation radio over fiber (RoF) link which employs optical-microwave double-mixing scheme with a high-speed photodetector (PD). With this up-conversion technique, an intermediate frequency(IF) signal of 500MHz carrying 20Mbps quadrature phase shift keying (QPSK) vector signal is up-converted to 16GHz in the base...
In this paper, we studied the effect of the phase noise caused by the intrinsic analog optical link noise on orthogonal frequency-division multiplexing (OFDM) systems. The effect of this additive phase noise in the demodulation has been investigated by both numerical simulations based on a theoretical analysis and experiments using a low cost Vertical Cavity Surface Emitting Laser (VCSEL). The phase...
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