Increasing the Bandwidth Efficiency of OFDM-N/MFSK

Konferenz: OFDM 2014 - 18th International OFDM Workshop 2014 (InOWo'14)
27.08. - 28.08.2014 in Essen, Deutschland

Tagungsband: Proceedings of the 18th International OFDM Workshop 2014 (InOWo’14)

Seiten: 8Sprache: EnglischTyp: PDF

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Autoren:
Peiker, E.; Yammine, G.; Teich, W. G.; Lindner, J. (Institute of Communications Engineering Ulm University, Ulm, Germany)

Inhalt:
Based on noncoherent transmission schemes using subspaces, we propose a method for OFDM-MFSK, which combines subspaces of different dimensions. The assumed channel is a Rayleigh block fading channel. We show, how to combine subspaces of different dimensions and define a criterion for the mapping. The combination of subspaces of different dimensions offers the possibility to increase the bandwidth efficiency of OFDM-MFSK. An upper bound of 1 bit / s Hz can be approached.