Microwave Mobile Communications
Microwave Mobile Communications
Deterministic approaches for blind equalization of time-varyingchannels with antenna arrays
IEEE Transactions on Signal Processing
Time-varying FIR equalization for doubly selective channels
IEEE Transactions on Wireless Communications
Iterative interference cancellation and channel estimation for mobile OFDM
IEEE Transactions on Wireless Communications
Frequency domain equalization for single-carrier broadband wireless systems
IEEE Communications Magazine
Space-time codes for future WLANs: principles, practice, and performance
IEEE Communications Magazine
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The bidirectional decision feedback equalizer (DFE) performs two equalizations, one on the received signal and one on its time-reversed version. In this paper, we apply the bidirectional DFE to wireless transmissions on rapidly time-varying dispersive channels and we propose an efficient implementation obtained by implementing the feedforward filter in the frequency domain. The feedback filter is adapted to the channel variations within one block and we propose a simplified design of the feedback filter coefficients based on a polynomial model of channel variations. Simulations performed on time-varying channels show that the proposed structure significantly outperforms existing architectures.