Impact of the Doppler effect on the capacity of massive MIMO uplink systems: OFDM versus FBMC/OQAM

Abstract : 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 the impact of the Doppler effect on the achievable rate of this system and to bring out benefits and drawbacks of both modulations. On the one hand, the OFDM modulation presents a loss of spectral efficiency because of its cyclic prefix and a limited robustness against the Doppler effect. On the other hand, the FBMC/OQAM performance is restricted by its intrinsic interference due to the frequency selectivity of the channel. These two modulations are compared under different mobility scenarios and the ability of the FBMC/OQAM modulation to significantly increase the achievable rate per user compared to the OFDM modulation is highlighted, especially for high speed scenarios. © 2017 IEEE.
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Communication dans un congrès
24th International Conference on Telecommunications, ICT 2017, May 2017, Pasadena, United States. 〈10.1109/ICT.2017.7998233〉
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Soumis le : mardi 24 octobre 2017 - 13:27:09
Dernière modification le : mercredi 21 février 2018 - 01:23:26

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A. Bazin, B. Jahan, M. Helard. Impact of the Doppler effect on the capacity of massive MIMO uplink systems: OFDM versus FBMC/OQAM. 24th International Conference on Telecommunications, ICT 2017, May 2017, Pasadena, United States. 〈10.1109/ICT.2017.7998233〉. 〈hal-01622389〉

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