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Phase fluctuation in the downlink and uplink of a bidirectional analog fiber link is simultaneously cancelled in our proposal based on frequency mixing. Phase drift of 86ps/31ps for 2.4GHz signal is reduced to 3.2ps/2.5ps after 25-km SMF transmission.
A photonic approach to generate chirped microwave pulses with precisely targeted and tuned parameters including central frequency, pulse repetition frequency, and chirp rate, is proposed. Such chirped pulses at 15 and 20GHz are experimentally demonstrated.
Differentially encoding and frequency offset compensating for a 16-quadrature amplitude modulation (16-QAM) vector signal in 60-GHz millimeter-wave radio-over-fiber (RoF) systems are experimentally investigated. The fourfold phase ambiguity issue in a non-data-aided signal communication transmission system with conventional square 16-QAM constellations is successfully tackled based on the differentially...
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