Pilot based synchronization in OFDM systems using maximum likelihood estimation

被引：0
|
作者：
Sharma, GVV [1 ]
机构：
[1] Satyam Comp Serv Ltd, Appl Res Grp, Bangalore 560012, Karnataka, India
来源：
2005 13TH IEEE INTERNATIONAL CONFERENCE ON NETWORKS JOINTLY HELD WITH THE 2005 7TH IEEE MALAYSIA INTERNATIONAL CONFERENCE ON COMMUNICATIONS, PROCEEDINGS 1 AND 2 | 2005年
关键词：
D O I：
暂无
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
Orthogonal frequency division multiplexing (OFDNI) based communication systems are very efficient in combating inter-symbol interference (ISI) in frequency-selective channels. However, carrier frequency offset (CFO) severely affects system performance by destroying the orthogonality between the OFDM subcarriers. In this paper, we estimate the CFO in a block OFDM system using maximum-likelihood estimation (MLE) and pilot subcarriers. Through simulations, we then show the deleterious effect of the CFO on the bit error rate (BER) and subsequently, the performance improvement after CFO compensation.
引用
收藏
页码：613 / 616
页数：4
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