Characteristics of band-limited channels unidentifiable fromsecond-order cyclostationary statistics
Zhi Ding
Signal Processing Letters, IEEE
Volume 3, Issue 5, May 1996 Page(s):150 - 152
Digital Object Identifier   10.1109/97.491658
Summary:Several works on blind channel identification and equalization rely on a system model with multiple sub-channels driven by a single input. These methods depend on a critical condition that no common zero exists among the sub-channels. We aimed at establishing the physical significance of this critical zero condition and understanding the limitation of methods based on second-order statistics, By deriving a number of sufficient conditions, we characterize several classes of band-limited channels that are not identifiable from only the second-order statistics of the channel output

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