正交频分复用系统中的载波频偏估计方案

doi:10.3969/j.issn.1000-3428.2015.04.019

计算机工程

正交频分复用系统中的载波频偏估计方案

林　婧,叶　凡,任俊彦

(复旦大学专用集成电路与系统国家重点实验室微纳电子科技创新平台,上海201203)

收稿日期:2014-05-06 出版日期:2015-04-15 发布日期:2015-04-15
作者简介:林　婧(1989 - ),女,硕士研究生,主研方向:无线通信,集成电路设计;叶　凡,副教授、博士研究生;任俊彦,教授、博士生导师。
基金资助:
国家科技重大专项基金资助项目(2011ZX03004-001-02)。

Estimation Scheme of Carrier Frequency Offset in Orthogonal Frequency Division Multiplexing System

LIN Jing,YE Fan,REN Junyan

(Micro-Nano Electronics Science and Technology Innovation Platform,State Key Lab of ASIC and System,Fudan University,Shanghai 201203,China)

Received:2014-05-06 Online:2015-04-15 Published:2015-04-15

摘要/Abstract

摘要： 针对正交频分复用(OFDM)系统中模拟前端的非理想因素(包括载波频偏和I / Q 失配等)对系统性能的影响,提出一种在频域对非理想因素进行载波频偏估计的方案。根据ECMA-368 标准建立信号模型,在频域对3 个连续前导符进行处理,并采用余弦函数算法与正切函数算法对载波频偏进行估计。仿真结果证明,与传统载波频偏估计方案相比,当噪声干扰或I / Q 失配程度较大时,该方案仍具有较高的估计精度,增强了OFDM 系统的鲁棒性。

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

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.

Key words: Orthogonal Frequency Division Multiplexing ( OFDM ), bandwidth system, Carrier Frequency Offset (CFO) estimation, I / Q imbalance, threshold

中图分类号:

TN925

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, doi: 10.3969/j.issn.1000-3428.2015.04.019.

LIN Jing,YE Fan,REN Junyan. Estimation Scheme of Carrier Frequency Offset in Orthogonal Frequency Division Multiplexing System[J]. Computer Engineering, doi: 10.3969/j.issn.1000-3428.2015.04.019.

https://www.ecice06.com/CN/Y2015/V41/I4/102

参考文献

[ 1 ]　刘　亮,周　军,叶　凡,等. MB-OFDM 超宽带系统中模拟前端非理想因素的估计与补偿[J]. 通信学报, 2009,30(10):1-7. [ 2 ]　de Rore S, Lopez-Estraviz E, Horlin F, et al. Joint Estimation of Carrier Frequency Offset and IQ Imbalance for 4G Mobile Wireless Systems [C] / / Proceedings of IEEE International Conference on Communications. Washington D. C. ,USA:IEEE Press,2006:2066-2071. [ 3 ]　Wang Xiaolong,Xue Yuankun,Liu Liang,et al. Carrier Frequency Offset Estimation in the Presence of I / Q Mismatch for Wideband OFDM Systems [J]. Wireless Personal Communications,2013,71(2):1095-1107. [ 4 ]　Sun Mingfu,Yu Jui-Yuan,Hsu Terng-Yin. Estimation of Carrier Frequency Offset with I / Q Mismatch Using Pseudo-offset Injection in OFDM Systems [ J ]. IEEE Transactions on Circuits and Systems I:Regular Papers, 2008,55(3):943-952. (下转第111 页) [ 5 ]　Chen Ying,Jayalath A. Low-complexity Estimation of CFO and Frequency Independent I / Q Mismatch for OFDM Systems[EB / OL]. (2009-05-17). http:/ / jwcn. eurasipjournals. com / content / 2009/ 1/ 542187. [ 6 ]　Sharma R, Lalitha H, Kumar N. Design and Development of Non Data Aided Estimation Algorithm for Carrier Frequency-offset and I / Q Imbalancing in OFDM-based Systems [ C ] / / Proceedings of the 10th International Conference on Wireless and Optical Communications Networks. Washington D. C. , USA: IEEE Press,2013:1-4. [ 7 ]　ECMA. ISO / IEC 26907-2005 ECMA-368 High Rate Ultra Wideband PHY and MAC Standard[S]. 2005. [ 8 ]　Molisch A F, Foerster J R, Pendergrass M. Channel Models for Ultra Wideband Personal Area Networks[ J]. IEEE Wireless Communications, 2003, 10(6):14-21. [ 9 ]　周　军,刘　亮,叶　凡,等. 超宽带系统非理想因素的联合估计算法[J]. 计算机工程,2010,36(9):97-99. [10]　Zhou Jun,Liu Liang, Ye Fan, et al. Design of New Training Sequence and Estimation Scheme for Frequency Dependent I / Q Imbalance in MB-OFDM Based UWB Systems [ C ]/ / Proceedings of ASICON ’ 09. Washington D. C. ,USA:IEEE Press,2009:509-512. [11]　Zhou Jun,Liu Liang,Ye Fan,et al. Joint Estimation and Compensation for Front-end Imperfection in MB-OFDM UWB Systems [C] / / Proceedings of IEEE International Symposium on Circuits and Systems. Washington D. C. , USA:IEEE Press,2010:2135-2138. [12]　Moose P H. A Technique for Orthogonal Frequency Division Multiplexing Frequency Offset Correction[J]. IEEE Transactions on Communications,1994,42(10): 2908-2914. 编辑　陆燕菲

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