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Record wireless data transmission of 31.4 Gbps within 7 GHz license-free band at 60 GHz is experimentally demonstrated using adaptive bit-loading OFDM modulation. Adaptive bit-loading OFDM also enables extended fiber transmission distances beyond 5km.
This paper reviews 60-GHz radio-over-fiber systems employing optical frequency multiplication and adaptive OFDM signals with multi-level modulation formats to achieve an ultra-high data rate of up to 32.65 Gbps within the 7-GHz license-free band.
We experimentally demonstrated an adaptive I/Q imbalance correction scheme to compensate I/Q-imbalance. With I/Q correction, a 32.65-Gbps OFDM signal at 60 GHz within 7-GHz license-free band is successfully generated and, following 25km SMF transmission, negligible power penalty is observed.
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