Unitary-ESPRIT Algorithm for Carrier Frequency Offset Estimation for Interleaved OFDMA Uplink Systems

被引：6

作者：

Du, Ruiyan ^{[1
,2
]}

Wang, Jinkuan ^{[1
,2
]}

Liu, Fulai ^{[1
,2
]}

机构：

[1] Northeastern Univ, Sch Informat Sci & Engn, Shenyang, Peoples R China

[2] Northeastern Univ Qinhuangdao, Engn Optimizat & Smart Antenna Inst, Qinhuangdao, Peoples R China

来源：

WIRELESS PERSONAL COMMUNICATIONS | 2013年 / 69卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Carrier frequency offset (CFO); Orthogonal frequency-division multiple-access (OFDMA); Parameter estimation; SYNCHRONIZATION;

D O I：

10.1007/s11277-012-0654-y

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

The carrier frequency offset (CFO) estimation is an important task for orthogonal frequency-division multiple-access (OFDMA) systems. Making use of the intrinsic periodic structure of the received signal samples, an effective Unitary-ESPRIT algorithm based on unitary transformation technique is proposed for the CFO estimation problem. Compared with other recently proposed CFO estimation approaches, the proposed algorithm offers a number of advantages. Firstly, the presented approach can reduce the computation complexity considerably, since it is efficiently formulated in terms of real-valued computation except for the data preprocessing. Secondly, it can provide better CFO estimation performance by incorporating the data stacking technology and the unitary transformation, etc. Simulation results demonstrate the efficacy of the proposed algorithm.

引用

页码：1615 / 1627

页数：13

共 16 条

[1] Low complexity blind estimation of residual carrier offset in orthogonal frequency division multiplexing-based wireless local area network systems [J].