TY - GEN
T1 - α-repetition/modulation and blind second-order identification
AU - Ciblat, Philippe
AU - Chevreuil, Antoine
AU - Loubaton, Philippe
N1 - Publisher Copyright:
© 1999 IEEE.
PY - 1999/1/1
Y1 - 1999/1/1
N2 - In the context of redundant filter-bank precoders, we investigate the so-called α-repetition/modulation, for αϵ[0, 1/2 ], with regard to the blind second-order identification. For many α'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 α. We therefore analyze the numerical behavior of this method resorting to spheroidal wave sequences. We show there exist α's less than a bound depending on the channel bandwidth making the estimation robust to noise. Simulations are also provided.
AB - In the context of redundant filter-bank precoders, we investigate the so-called α-repetition/modulation, for αϵ[0, 1/2 ], with regard to the blind second-order identification. For many α'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 α. We therefore analyze the numerical behavior of this method resorting to spheroidal wave sequences. We show there exist α's less than a bound depending on the channel bandwidth making the estimation robust to noise. Simulations are also provided.
UR - https://www.scopus.com/pages/publications/0033315912
U2 - 10.1109/ACSSC.1999.832326
DO - 10.1109/ACSSC.1999.832326
M3 - Conference contribution
AN - SCOPUS:0033315912
T3 - Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers
SP - 220
EP - 224
BT - Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers
A2 - Matthews, Michael B.
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 33rd Asilomar Conference on Signals, Systems, and Computers, ACSSC 1999
Y2 - 24 October 1999 through 27 October 1999
ER -