TY - JOUR
T1 - Redundant filterbank precoders and equalizers Part II
T2 - blind channel estimation, synchronization, and direct equalization
AU - Scaglione, Anna
AU - Giannakis, Georgios B.
AU - Barbarossa, Sergio
N1 - Funding Information:
Manuscript received January 6, 1998; revised January 18, 1999. This work was supported by the National Science Foundation under Grant CCR-9805350. It was presented in part at Allerton’97 and ICASSP’98. The associate editor coordinating the review of this paper and approving it for publication was Dr. Truong Q. Nguyen.
PY - 1999
Y1 - 1999
N2 - Transmitter redundancy introduced using finite impulse response (FIR) filterbank precoders offers a unifying framework for single- and multiuser transmissions. With minimal rate reduction, FIR filterbank transmitter with trailing zeros allow for perfect (in the absence of noise) equalization of FIR channels with FIR zero-forcing equalizer filterbanks, irrespective of the input color and the channel zero locations. Exploiting this simple form of redundancy, blind channel estimators, block synchronizers, and direct self-recovering equalizing filterbanks are derived in this paper. The resulting algorithms are computationally simple, require small data sizes, can be implemented online, and remain consistent (after appropriate modifications), even at low SNR colored noise. Simulations illustrate applications to blind equalization of downlink CDMA transmissions, multicarrier modulations through channels with deep fades, and superior performance relative to CMA and existing output diversity techniques relying on multiple antennas and fractional sampling.
AB - Transmitter redundancy introduced using finite impulse response (FIR) filterbank precoders offers a unifying framework for single- and multiuser transmissions. With minimal rate reduction, FIR filterbank transmitter with trailing zeros allow for perfect (in the absence of noise) equalization of FIR channels with FIR zero-forcing equalizer filterbanks, irrespective of the input color and the channel zero locations. Exploiting this simple form of redundancy, blind channel estimators, block synchronizers, and direct self-recovering equalizing filterbanks are derived in this paper. The resulting algorithms are computationally simple, require small data sizes, can be implemented online, and remain consistent (after appropriate modifications), even at low SNR colored noise. Simulations illustrate applications to blind equalization of downlink CDMA transmissions, multicarrier modulations through channels with deep fades, and superior performance relative to CMA and existing output diversity techniques relying on multiple antennas and fractional sampling.
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U2 - 10.1109/78.771048
DO - 10.1109/78.771048
M3 - Article
AN - SCOPUS:0032664461
SN - 1053-587X
VL - 47
SP - 2007
EP - 2022
JO - IEEE Transactions on Signal Processing
JF - IEEE Transactions on Signal Processing
IS - 7
ER -