A New Differential Space-Time Modulation Scheme based on Weyl Group

Hui Ji (1) , Gheorghe Zaharia (1) , Jean-François Hélard (1)

1 IETR - Institut d'Électronique et des Technologies du numéRique

In this paper, a new differential space-time modulation (DSTM) scheme for 4£4 multiple input multiple output (MIMO) systems is proposed. This scheme is used for MIMO systems where the channel coefficients are not available at both the transmitters and the receivers. The transmission matrix used in this scheme is based on the Weyl group. Simulation results show that this new scheme with four transmit antennas outperforms the well-known Tarokh's differential space-time block coding (DSTBC) scheme. The spectral efficiency of this scheme can be up to 3 bps/Hz.

Mots clés: MIMO; DSTM; DSTBC; non-coherent demodulation

Domaines: Electronique

Hui Ji, Gheorghe Zaharia, Jean-François Hélard. A New Differential Space-Time Modulation Scheme based on Weyl Group. International Symposium on Signals, Circuits and Systems, Jul 2013, Iasi, Romania. pp.1-4. ⟨hal-00873872⟩