Abstract
We experimentally demonstrated a seamlessly integrated fiber-wireless system that
delivers 30.67-Gb/s polarization division multiplexing-multiple input multiple
output-orthogonal frequency division multiplexing (PDM-MIMO-OFDM) signal through 40-km
fiber and 5-m wireless transmission over free-space at 100 GHz adopting heterodyne
coherent detection. De-multiplexing is realized by channel estimation based on a pair of
time-interleaved training sequences (TSs). The bit-error ratio (BER) for the 30.67-Gb/s
PDM-MIMO-OFDM signal is less than the pre-forward-error-correction (pre-FEC) threshold
of 3.8 × 10-3 when the optical signal-to-noise ratio (OSNR) is larger
than 19.3 dB after both 40-km single-mode fiber-28 (SMF-28) transmission and 5-m
wireless delivery at 100 GHz. We also find that the BER performance is sensitive to the
multipath effects induced by the transmission distance difference in the wireless
link.
© 2013 IEEE
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