Complexity reduction of the MLSD/MLSDE receiver using the adaptive state allocation algorithm
IEEE Transactions on Wireless Communications
Equalization concepts for EDGE
IEEE Transactions on Wireless Communications
Iterative receivers for space-time block-coded OFDM systems in dispersive fading channels
IEEE Transactions on Wireless Communications
IEEE Transactions on Information Theory
The viterbi algorithm applied to digital data transmission
IEEE Communications Magazine - Part Anniversary
A simple transmit diversity technique for wireless communications
IEEE Journal on Selected Areas in Communications
Hi-index | 0.00 |
In Alamouti coded OFDM systems, the simple decoding at the receiver relies on the assumption that the subchannels are flat fading, decoupled, and quasi-static so that each subchannel does not change over an Alamouti codeword period (two consecutive OFDM symbol periods). When the channel is fast fading, however, these assumptions are not met, resulting in severe performance degradation. In this paper, a sequential decision feedback sequence estimation (SDFSE) scheme with an adaptive threshold (AT) is used to mitigate the performance degradation at a moderate complexity. A new method to set a threshold value is proposed. Simulation results show that the SDFSE with an AT shows significant performance improvement at the cost of a moderate complexity increase.