Blind second-order identification of FIR channels: forced cyclostationarity and structured subspace method
- 1 July 1997
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Signal Processing Letters
- Vol. 4 (7) , 204-206
- https://doi.org/10.1109/97.596888
Abstract
We address the problem of blind second-order equalization of scalar-valued polynomial channels. When an almost periodic deterministic function modulates the initial symbol sequence, the observation exhibits second-order cyclostationarity. This property is shown to give rise to a structured spectral factorization problem. The identification of the unknown channel is then always possible via a structured version of the subspace method. No assumption on the channel is required, except the knowledge of a lower bound of the order. The estimate is consistent, and this property remains unchanged in the presence of stationary noise and when the symbols are colored.Keywords
This publication has 2 references indexed in Scilit:
- A new approach to blind identification and equalization of multipath channelsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- A subspace algorithm for certain blind identification problemsIEEE Transactions on Information Theory, 1997