SNR threshold indicator in data-aided frequency synchronization

被引:8
|
作者
Atallah, LN [1 ]
Barbot, JP [1 ]
Larzabal, P [1 ]
机构
[1] Ecole Normale Super, Lab SATIE, F-94235 Cachan, France
关键词
carrier synchronization; Chapman-Robbins bound; Cramer-Rao bound; threshold effect;
D O I
10.1109/LSP.2004.831683
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
The signal-to-noise ratio (SNR) threshold behavior is studied in the frame of data-aided carrier synchronization in additive white Gaussian noise. The closed form expression of the Chapman-Robbins bound, relative to the carrier frequency offset estimation is first established then used to derive an indicator of the SNR threshold. For a given sequence of pilot symbols, the threshold region is localized at the departure of the Chapman-Robbins bound from the Cramer-Rao bound. The data-aided maximum likelihood estimator is considered to examine the derived indicator usefullness.
引用
收藏
页码:652 / 654
页数:3
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