A New Differential Space-Time Modulation Scheme for MIMO Systems with Four Transmit Antennas

Hui Ji (1) , Gheorghe Zaharia (2) , Jean-François Hélard (2)

1 SCN
2 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 transmitter and the receiver. The transmission matrices used in this scheme belong to 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 bit/s/Hz.

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

Domaines: Electronique

Hui Ji, Gheorghe Zaharia, Jean-François Hélard. A New Differential Space-Time Modulation Scheme for MIMO Systems with Four Transmit Antennas. ICT 2013, May 2013, Casablanca, Morocco. pp.1-5. ⟨hal-00826422⟩