[ClC16] Maximum likelihood Alamouti receiver for filter bank based multicarrier transmissions
Conférence Internationale avec comité de lecture :
International Workshop on Smart Antenna (WSA),
March 2016,
pp.1-6,
Munich,
Germany,
Mots clés: Filter-bank multicarrier; FBMC; OQAM; Inter-Carrier Interference; ICI; MIMO; Space-Time Coding; Alamouti; Maximum Likelihood joint detection
Résumé:
Filter-bank based multicarrier (FBMC) transmission
is an alternative to orthogonal frequency division multiplexing
(OFDM) transmission, more spectrally efficient and
more robust to asynchronisms than the latter. For these reasons,
the FBMC waveform is a promising candidate for 5G mobile
networks. Using offset quadrature amplitude (OQAM) symbols
and a proper prototype filter, the FBMC waveform may become
orthogonal for flat fading single-input single-output (SISO) channels.
However, for frequency selective or multiple-input multipleoutput
(MIMO) channels, the FBMC waveform is generally no
longer orthogonal and inter-carrier interference (ICI) is present
at reception. This ICI makes difficult the combination of FBMC
waveforms with some MIMO schemes such as the Alamouti
scheme in particular. In this context, the purpose of this paper
is to introduce a new Alamouti receiver for the detection of the
OQAM symbols transmitted by a FBMC waveform. This receiver
is based on the maximum likelihood (ML) joint detection of the
symbols transmitted by both the subcarrier of interest and its two
adjacent subcarriers. Challenges for the receiver implementation
are discussed jointly with sub-optimal alternatives to decrease
the complexity