Block FIR decision-feedback equalizers for filterbank precodedtransmissions with blind channel estimation capabilities
Stamoulis, A.; Giannakis, G.B.; Scaglione, A.
Communications, IEEE Transactions on
Volume 49, Issue 1, Jan 2001 Page(s):69 - 83
Digital Object Identifier   10.1109/26.898252
Summary:In block transmission systems, transmitter-induced redundancy using finite-impulse response (FIR) filterbanks can be used to suppress intersymbol interference and equalize FIR channels irrespective of channel zeros. At the receiver end, linear or decision-feedback (DF) FIR filterbanks can be applied to recover the transmitted data. Closed-form expressions are derived for the FIR linear or DF filterbank receivers corresponding to varying amounts of transmission redundancy. Our framework encompasses existing block transmission schemes and offers low implementation-cost equalization techniques both when interblock interference is eliminated, and when IBI is present as, e.g., in orthogonal frequency-division multiplexing with insufficient cyclic prefix. By applying blind channel estimation methods, our filterbank transmitters-receivers (transceivers) dispense with bandwidth consuming training sequences. Extensive simulations illustrate the merits of our designs

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