Flexible OFDM Schemes for Bursty Transmissions

Romain Couillet, Merouane Debbah
2009 2009 IEEE Wireless Communications and Networking Conference  
In this paper, α-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 α 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
more » ... M modulation schemes. The framework is extended to multiuser/multi-antenna OFDM based standards. Simulations, in the context of 3GPP LTE, called hereafter α-LTE, sustain our theoretical claims.
doi:10.1109/wcnc.2009.4917727 dblp:conf/wcnc/CouilletD09 fatcat:h25fyb6tz5czpjt2mhhn7hcbqu