Characteristics of band-limited channels unidentifiable from second-order cyclostationary statistics

被引：34
作者：
Ding, Z
机构：
[1] Department of Electrical Engineering, Auburn University, Auburn
来源：
IEEE SIGNAL PROCESSING LETTERS | 1996年 / 3卷 / 05期
基金：
美国国家科学基金会;
关键词：
Manuscript received June 20; 1995. This work was supported in part by the U.S. Army Research Office under Grant DAAH04-94-G-0252 and by the National Science Foundation under Grant MIP-9210100. The associate editor coordinating the review of this letter and approving it for publication was Prof. G. B. Giannakis;
D O I：
10.1109/97.491658
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Several recent works on blind channel identification and equalization rely on a system model with multiple subchannels driven by a single input, These methods depend on a critical condition that no common zero exists among the sub-channels, Our effort in this letter is 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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页码：150 / 152
页数：3
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