Time-domain and frequency-domain per-tone equalization for OFDM over doubly selective channels
Signal Processing - Signal processing in communications
EURASIP Journal on Applied Signal Processing
Frequency-shift zero-forcing time-varying equalization for doubly selective SIMO channels
EURASIP Journal on Applied Signal Processing
Estimation and direct equalization of doubly selective channels
EURASIP Journal on Applied Signal Processing
Efficient bidirectional DFE for doubly selective wireless channels
EURASIP Journal on Applied Signal Processing
Doubly selective channel estimation using superimposed training and exponential bases models
EURASIP Journal on Applied Signal Processing
A discrete model for the efficient analysis of time-varying narrowband communication channels
Multidimensional Systems and Signal Processing
Multi-carrier transmission techniques for wireless communication systems: a survey
WSEAS TRANSACTIONS on COMMUNICATIONS
On efficient channel estimation for underwater acoustic OFDM systems
Proceedings of the Fourth ACM International Workshop on UnderWater Networks
IEEE Transactions on Wireless Communications
Time-varying FIR equalization for MIMO transmission over doubly selective channels
EURASIP Journal on Advances in Signal Processing - Special issue on advanced equalization techniques for wireless communications
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We propose a time-varying (TV) finite impulse response (FIR) equalizer for doubly selective (time- and frequency-selective) channels. We use a basis expansion model (BEM) to approximate the doubly selective channel and to design the TV FIR equalizer. This allows us to turn a complicated equalization problem into an equivalent simpler equalization problem, containing only the BEM coefficients of both the doubly selective channel and the TV FIR equalizer. The minimum mean-square error (MMSE) as well as the zero-forcing (ZF) solutions are considered. Comparisons with the block linear equalizer (BLE) are made. The TV FIR equalization we propose here unifies and extends many previously proposed serial equalization approaches. In contrast to the BLE, the proposed TV FIR equalizer allows a flexible tradeoff between complexity and performance. Moreover, through computer simulations, we show that the performance of the proposed MMSE TV FIR equalizer comes close to the performance of the ZF and MMSE BLE, at a point where the design as well as the implementation complexity are much lower.