Non Data-Aided SNR Estimation of OFDM Signals

被引：44
|
作者：
Socheleau, Francois-Xavier [1 ,2 ,3 ]
Aissa-El-Bey, Abdeldjalil [1 ,2 ,3 ]
Houcke, Sebastien [1 ,2 ,3 ]
机构：
[1] Inst TELECOM, F-29238 Brest, France
[2] TELECOM Bretagne, F-29238 Brest, France
[3] Univ Europeenne Bretagne, CNRS UMR 3192, Lab STICC, F-29238 Brest, France
来源：
IEEE COMMUNICATIONS LETTERS | 2008年 / 12卷 / 11期
关键词：
SNR estimation; OFDM; non data-aided;
D O I：
10.1109/LCOMM.2008.081134
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
This letter deals with the problem of non data aided (NDA) signal to noise ratio (SNR) estimation of OFDM signals transmitted through unknown multipath fading channel. Most of existing OFDM SNR estimators are based on the knowledge of pilot sequences which is not applicable in some contexts such as cognitive radio for instance. We show that it is possible to take advantage of the periodic redundancy induced by the cyclic prefix to get an accurate NDA SNR estimator. Numerical simulations highlight the benefit of the proposed method compared with the state of the art.
引用
收藏
页码：813 / 815
页数：3
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