Lattice-reduction aided equalization for OFDM systems
IEEE Transactions on Wireless Communications
Space-frequency block code with matched rotation for MIMO-OFDM system with limited feedback
EURASIP Journal on Advances in Signal Processing - Multiuser MIMO Transmission with Limited Feedback, Cooperation, and Coordination
Low-complexity linear equalization for block transmission in multipath channels
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Parallel packet transmission based on OFDM
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Frequency and space precoded MIMO OFDM with substream adaptation
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
On full diversity equalization for precoded block transmission systems
Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
Diversity order in ISI channels with single-carrier frequency-domain equalizers
IEEE Transactions on Wireless Communications
IEEE Transactions on Information Theory
A precoded OFDMA system with user cooperation
EURASIP Journal on Wireless Communications and Networking - Special issue on theoretical and algorithmic foundations of wireless ad hoc and sensor networks
International Journal of Wireless and Mobile Computing
| Hi-index | 754.90 |
In wireless communications, the fading multipath channel attenuates and distorts the transmitted signal. To decode the transmitted symbols and take advantage of the full multipath diversity that the channel has to offer, computationally complex maximum-likelihood (ML) decoding is often employed. We show that a linear equalizer followed by a hard decision is capable of benefiting from maximum multipath diversity in linearly precoded orthogonal frequency-division multiplexing (OFDM) systems, where the information symbols are mapped through a matrix transformation before the inverse fast Fourier transform (IFFT) at the OFDM transmitter. As far as we are aware, this is the first proof of a linear equalization scheme achieving maximum multipath diversity over single-input single-output wireless links. We can conclude from this result that at sufficiently high signal-to-noise ratios (SNR), precoded OFDM systems will perform better over channels with more taps even with linear equalization, due to the increase in diversity order.