Efficient MIMO-OFDM Schemes for Future Terrestrial Digital TV with Unequal Received Powers

Youssef, Joseph Nasser (1) , Jean-François Hélard (2) , Matthieu Crussière (1) , Oudomsack Pierre Pasquero (1)

1 IETR - Institut d'Electronique et de Télécommunications de Rennes
2 IETR - Institut d'Électronique et des Technologies du numéRique

This article investigates the effect of equal and unequal received powers on the performances of different MIMO-OFDM schemes for terrestrial digital TV. More precisely, we focus on three types of non-orthogonal schemes: the BLAST scheme, the Linear Dispersion (LD) code and the Golden code, and we compare their performances to that of Alamouti scheme. Using two receiving antennas, we show that for moderate attenuation on the second antenna and high spectral efficiency, Golden code outperforms other schemes. However, Alamouti scheme presents the best performance for low spectral efficiency and equal received powers or when one antenna is dramatically damaged. When three antennas are used, we show that Golden code offers the highest robustness to power unbalance at the receiving side

Mots clés: OFDM; MIMO; Space Time codes

Domaines: Réseaux et télécommunications [cs.NI]

Youssef, Joseph Nasser, Jean-François Hélard, Matthieu Crussière, Oudomsack Pierre Pasquero. Efficient MIMO-OFDM Schemes for Future Terrestrial Digital TV with Unequal Received Powers. IEEE International Conference on Communications, May 2008, China. pp.2021-2027. ⟨hal-00325507⟩