On the Influence of Carrier Frequency Offset and Sampling Frequency Offset in MIMO-OFDM Systems for Future Digital TV

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

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

This paper investigates the impact of carrier frequency offset (CFO) and sampling frequency offset (SFO) on the performance of different MIMO-OFDM schemes with high spectral efficiency for next generation of terrestrial digital TV. We analyze particularly orthogonal Alamouti scheme, and non-orthogonal (NO) schemes like VBLAST, linear dispersion (LD) code and Golden code. This analysis gives a global view on the best suitable MIMO-OFDM scheme with respect to CFO and SFO. We show that for high spectral efficiency, Alamouti is more sensitive to CFO and SFO. Moreover, we show that all studied MIMO-OFDM schemes are sensitive to CFO when it is greater than 1% of inter-carrier spacing. Their sensitivity due to SFO is less than that due to CFO.

Mots clés: MIMO-OFDM; Carrier Frequency Offset; Sampling Frequency Offset; Iterative receiver

Domaines: Réseaux et télécommunications [cs.NI]

Youssef, Joseph Nasser, Jean-François Hélard, Matthieu Crussière. On the Influence of Carrier Frequency Offset and Sampling Frequency Offset in MIMO-OFDM Systems for Future Digital TV. International Symposium on Wireless and Pervasive Computing, May 2008, Greece. pp.N/A. ⟨hal-00325514⟩