Performance of DSTM MIMO Systems Based on Weyl Group in Time Selective Channel
Konferenz: European Wireless 2014 - 20th European Wireless Conference
14.05.2014 - 16.05.2014 in Barcelona, Spain
Tagungsband: European Wireless 2014
Seiten: 6Sprache: EnglischTyp: PDFPersönliche VDE-Mitglieder erhalten auf diesen Artikel 10% Rabatt
Ji, Hui; Zaharia, Gheorghe; Helard, Jean-Francois (Universite Europeenne de Bretagne (UEB), INSA, IETR, UMR 6164, 35708, Rennes, France)
Traditionally, the channel used for differential multiple-input-multiple-output (MIMO) systems is constant during one frame and changes randomly from one frame to another. This channel behavior is too simple to be realistic. In this paper, we propose a new time selective channel model for differential space-time modulation (DSTM) schemes. A sufficient number of Rayleigh channel matrices are randomly generated, and the other channel matrices are sinc interpolated according to the Nyquist’s sampling theorem. The performance of DSTM schemes with two, four and eight transmit antennas are evaluated over this time selective channel model. Simulation results show slightly degraded but more realistic performance when this new channel model is used.