Optimal zero forcing precoder and decoder design for multi-user MIMO FBMC under strong channel selectivity

This paper investigates the optimal design of precoders or decoders under a channel inversion criterion for multi-user (MU) MIMO filterbank multicarrier (FBMC) modulations. The base station (BS) is assumed to use a single tap precoding/decoding matrix at each subcarrier in the downlink/uplink, resul...

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Veröffentlicht in:Proceedings of the ... IEEE International Conference on Acoustics, Speech and Signal Processing (1998) S. 3541 - 3545
Hauptverfasser: Rottenberg, Francois, Mestre, Xavier, Louveaux, Jerome
Format: Tagungsbericht Journal Article
Sprache:Englisch
Veröffentlicht: IEEE 01.03.2016
Schlagworte:
Antennas
Channels
Complexity theory
decoder
Decoders
Decoding
Design engineering
Distortion
FBMC
Inversions
MIMO
MU MIMO
OFDM
Optimization
precoder
Precoding
Selectivity
strong channel selectivity
ISSN:2379-190X
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Zusammenfassung:This paper investigates the optimal design of precoders or decoders under a channel inversion criterion for multi-user (MU) MIMO filterbank multicarrier (FBMC) modulations. The base station (BS) is assumed to use a single tap precoding/decoding matrix at each subcarrier in the downlink/uplink, resulting in a low complexity of implementation. The expression of the asymptotic mean squared error (MSE) for this precoding/decoding design in the case of strong channel selectivity is recalled and simplified. Optimizing the MSE under a channel inversion constraint, the expression of the optimal precoding/decoding matrix is found. It is shown that as long as the number of BS antennas is larger than the number of users, the optimized precoder and decoder can compensate for the channel frequency selectivity and even restore the system orthogonality for a large enough number of BS antennas.
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SourceType-Conference Papers & Proceedings-2
ISSN:2379-190X
DOI:10.1109/ICASSP.2016.7472336