计算机工程Issue(4)：102-106,111,6.DOI:10.3969/j.issn.1000-3428.2015.04.019
正交频分复用系统中的载波频偏估计方案
Estimation Scheme of Carrier Frequency Offset in Orthogonal Frequency Division Multiplexing System
摘要
Abstract
In order to solve the problem of non-ideal factors ( including Carrier Frequency Offset ( CFO ) , I/Q imbalance,etc. ) introduced from analog front-end in bandwidth Orthogonal Frequency Division Multiplexing( OFDM) system,an effective CFO estimation scheme in frequency domain is proposed. Based on ECMA-368 standard,the signal model is built. Processing three consecutive preambles in the frequency domain, cosine function algorithm and tangent function algorithm can be adopted to estimate CFO. Simulation results verify that,compared with the traditional schemes, the proposed scheme is robust to big CFO and I/Q imbalance, thus it can provide better performance and enhance the robustness of the system.关键词
正交频分复用/宽带系统/载波频偏估计/I/Q失配/阈值Key words
Orthogonal Frequency Division Multiplexing ( OFDM )/bandwidth system/Carrier Frequency Offset ( CFO) estimation/I/Q imbalance/threshold分类
信息技术与安全科学引用本文复制引用
林婧,叶凡,任俊彦..正交频分复用系统中的载波频偏估计方案[J].计算机工程,2015,(4):102-106,111,6.基金项目
国家科技重大专项基金资助项目(2011ZX03004-001-02)。 （2011ZX03004-001-02）
