Title :
Maximum likelihood detection in spatial multiplexing with FBMC
Author :
Zakaria, R. ; Le Ruyet, D. ; Bellanger, M.
Author_Institution :
CNAM, Paris, France
Abstract :
In FBMC transmission systems, the bit rate is maximized when OQAM modulation is employed. One of the characteristics of this modulation is that the received data symbols are accompanied by interference terms, which complicates the application of ML techniques in optimal decoders. Two approaches are proposed to cope with this situation. The first one exploits the MMSE estimation of the interference terms and it introduces no additional delay. In the second one, the interference terms are calculated from past, present and future data symbols, either already decided or estimated. The gains provided by these approaches, with respect to MMSE, are assessed and illustrated by simulation.
Keywords :
least mean squares methods; maximum likelihood detection; quadrature amplitude modulation; space division multiplexing; FBMC; MMSE estimation; OQAM modulation; filter bank multicarrier transmission systems; maximum likelihood detection; minimum mean square error; offset quadrature amplitude modulation; spatial multiplexing; Bit rate; Delay estimation; Filter bank; Interference; MIMO; Maximum likelihood decoding; Maximum likelihood detection; Maximum likelihood estimation; OFDM; Prototypes; FBMC; Filter bank; ML; MMSE; Multicarrier;
Conference_Titel :
Wireless Conference (EW), 2010 European
Conference_Location :
Lucca
Print_ISBN :
978-1-4244-5999-5
DOI :
10.1109/EW.2010.5483520
