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- W1540802002 abstract "In the context of redundant filter-bank precoders, we investigate the so-called /spl alpha/-repetition/modulation, for /spl alpha//spl epsiv/[0, 1/2 ], with regard to the blind second-order identification. For many /spl alpha/'s, an algebraic result shows that the unknown channel can be recovered from the second-order statistics irrespective of both the channel zero location and the model over-determination. Namely, a structured subspace method provides an estimate of the channel. However, in the context of band-limited communication channels, numerical degeneracies appear for certain choices of /spl alpha/. We therefore analyze the numerical behavior of this method resorting to spheroidal wave sequences. We show there exist /spl alpha/'s less than a bound depending on the channel bandwidth making the estimation robust to noise. Simulations are also provided." @default.
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- W1540802002 date "2003-01-22" @default.
- W1540802002 modified "2023-09-23" @default.
- W1540802002 title "α-repetition/modulation and blind second-order identification" @default.
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- W1540802002 doi "https://doi.org/10.1109/acssc.1999.832326" @default.
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