Increasing the Bandwidth Efficiency of OFDM-N/MFSK
Conference: OFDM 2014 - 18th International OFDM Workshop 2014 (InOWo'14)
08/27/0000 - 08/28/2014 at Essen, Deutschland
Proceedings: OFDM 2014
Pages: 8Language: englishTyp: PDF
Personal VDE Members are entitled to a 10% discount on this title
Authors:
Peiker, E.; Yammine, G.; Teich, W. G.; Lindner, J. (Institute of Communications Engineering Ulm University, Ulm, Germany)
Abstract:
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.