Abstract
Transmitter redundancy introduced using fllterbank precoders generalizes existing modulations including OFDM, DMT, TDMA, and CDMA schemes encountered with single- and multiuser communications. Sufficient conditions are derived to guarantee that with FIR fllterbank precoders, FIR channels are equalized perfectly in the absence of noise by FIR zero-forcing equalizer fllterbanks, irrespective of the channel zero locations. Multicarrier transmissions through frequencyselective channels can thus be recovered, even when deep fades are present. Jointly optimal transmitter-receiver fllterbank designs are also developed based on maximum-output signal-to-noise ratio (SNR) and minimum mean-square error criteria under zero forcing and fixed transmitted power constraints. Analytical performance results are presented for the zero-forcing filterbanks and are compared with mean-square error and ideal designs using simulations.
Original language | English (US) |
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Pages (from-to) | 820-821 |
Number of pages | 2 |
Journal | IEEE Transactions on Signal Processing |
Volume | 46 |
Issue number | 3 |
State | Published - Dec 1 1998 |
Externally published | Yes |
ASJC Scopus subject areas
- Signal Processing
- Electrical and Electronic Engineering