Flexible OFDM schemes for bursty transmissions

Romain Couillet (1) , Merouane Debbah (2)

1 NXP Semiconductors
2 E3S - Supélec Sciences des Systèmes

In this paper, -OFDM, a generalization of the OFDM modulation, is proposed to enhance the outage capacity of bursty transmissions. This new flexible modulation scheme is easily implemented and only requires a symbol rotation of angle after the IDFT stage. The induced rotation slides the DFT window and provides frequency diversity in block fading channels. Interestingly, the results show a substantial gain in terms of outage capacity and BER in comparison with classical OFDM modulation schemes. The framework is extended to multiuser/multi-antenna OFDM based standards. Simulations, in the context of 3GPP LTE, called hereafter -LTE, sustain our theoretical claims.

Domaines: Réseaux et télécommunications [cs.NI]

Romain Couillet, Merouane Debbah. Flexible OFDM schemes for bursty transmissions. IEEE Wireless Communications and Networking Conference 2009, Apr 2009, Budapest, Hungary. 6 p. ⟨hal-00392391⟩