Frequency ambiguity resolution in OFDM systems

被引：87

作者：

Morelli, M ^{[1
]}

D'Andrea, AN ^{[1
]}

Mengali, U ^{[1
]}

机构：

[1] Univ Pisa, Dept Informat Engn, I-56100 Pisa, Italy

来源：

IEEE COMMUNICATIONS LETTERS | 2000年 / 4卷 / 04期

关键词：

frequency offset; OFDM;

D O I：

10.1109/4234.841321

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

In orthogonal frequency division multiplexing systems, the carrier-frequency offset can be divided into two parts: 1) an integer one-multiple of the subcarrier spacing 1/T and 2) a fractional one-less than 1/2T in amplitude. Some schemes proposed in the literature can only recover the fractional part. In this letter we derive two algorithms for estimating the integer part. They are based on the observation of two consecutive OFDM symbols. The first algorithm exploits pilot symbols multiplexed with the data, the other is blind.

引用

页码：134 / 136

页数：3

共 8 条

[1] A novel carrier recovery technique for orthogonal multicarrier systems [J].