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Channel equalization via channel identification: algorithms and simulation results for rapidly fading HF channels

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1 Author(s)
B. Farhang-Boroujeny ; Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore

The problem of channel equalization via channel identification (CEQCID) that has previously been considered by a handful of researchers is explored further. An efficient algorithm for mapping the channel parameters to the equalizers coefficients is proposed. The proposed scheme is compared with a lattice least squares (LS) based receivers. For the particular application of the high frequency (HF) radio channels, we find that the CEQCID has lower computational complexity. In terms of the tracking performance, also, the CEQCID has been found to be superior to the LS based receivers. We emphasize on the implementation of a fractionally tap-spaced decision feedback equalizer (DFE) and compare that with the T-spaced DFE. We show that the former is a better choice for the multipath HF channels

Published in:

IEEE Transactions on Communications  (Volume:44 ,  Issue: 11 )