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[Ll10a] Decoding schemes for FBMC with single delay STTCRevue Internationale avec comité de lecture : Journal EURASIP Journal on Advances in Signal Processing, vol. 2010(06), 2010, (doi:689824)
motcle:
Résumé:
Orthogonally multiplexed Quadrature Amplitude Modulation (O-QAM) with Filter Banks based
Multi Carrier modulation (FBMC) is a multi-carrier modulation scheme that can be considered as an
alternative to the conventional orthogonal frequency division multiplexing (OFDM) with cyclic prefix
(CP) for transmission over multi-path fading channels. However, as OQAM-based FBMC is based on real
orthogonality, transmission over a complex-valued channel makes the decoding process more challenging
compared to CP-OFDM case. Moreover, if we apply Multiple Input Multiple Output (MIMO) techniques
to OQAM-based FBMC, the decoding schemes are different from the ones used in CP-OFDM. In this
paper, we consider the combination of OQAM-based FBMC with single delay Space-Time Trellis Coding
(STTC). We extend the decoding process presented earlier in the case of Nt = 2 transmit antennas to
greater values of Nt. Then, for Nt ≥ 2, we make an analysis of the theoretical and simulation perfor-
mance of ML and Viterbi decoding. Finally, to improve the performance of this method, we suggest an
iterative decoding method. We show that the OQAM-based FBMC iterative decoding scheme can slightly
outperform CP-OFDM.
Equipe:
laetitia
Collaboration:
CNAM Paris
BibTeX
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