Optimum Frame Synchronization for OFDM Systems

被引：1

作者：

Huh, Heon ^{[1
]}

机构：

[1] Korea Polytech Univ, Dept Mechatron Engn, Shihung 429793, Gyeonggi Do, South Korea

来源：

IEICE TRANSACTIONS ON COMMUNICATIONS | 2011年 / E94B卷 / 06期

关键词：

frame synchronization; single carrier; orthogonal frequency division multiplexing; FREQUENCY OFFSET; ML ESTIMATION; TIME;

D O I：

10.1587/transcom.E94.B.1732

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：

Orthogonal frequency division multiplexing has emerged as a promising air interface scheme for wireless broadband communications. For OFDM systems, frame synchronization has received much attention in the literature, though simple correlators are still widely used in real systems. In this letter, we present the analytical expression of the optimal frame synchronizer for OFDM systems. Frame synchronization is posed as a maximum a posteriori probability estimation. We show that the resulting frame synchronizer consists of a correlation term and a correction term. The correction term accounts for the random data surrounding a synchronization word. Numerical results show the performance gain of the proposed frame synchronizer over a correlation scheme.

引用

页码：1732 / 1735

页数：4

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