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This paper studies the impact of the Doppler effect on the capacity of an uplink communication between one or several user(s) with mobility and a base station. The OFDM and the FBMC/OQAM modulations are investigated. Moreover, massive MIMO techniques are used at the receiver side to increase the SINR and to allow for simultaneous multiuser communications. An analytic study is carried out to highlight...
Recently, the orthogonal frequency division multiplexing (OFDM) technique has been extensively studied for fiber-based optical transmissions in the context of access networks. The adaptive modulation optical (AMO) OFDM system has been proved to be one of the cost-effective solutions. Among adaptive modulation techniques, the Levin–Campello (LC) bit/power loading, which is widely implemented for xDSL...
By means of numerical simulations, we do a comparative study of different timing synchronization techniques for optical OFDM Intensity Modulated/Direct Detected (IMDD) transmission in single-mode fiber channel. Based on Park's method, we propose some modifications to obtain a more robust timing estimator.
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