一种MIMO-OFDM系统的导频设计及信道估计方法

doi:10.13190/jbupt.200703.45.wangy

北京邮电大学学报 ›› 2007, Vol. 30 ›› Issue (3): 45-49.doi: 10.13190/jbupt.200703.45.wangy

一种MIMO-OFDM系统的导频设计及信道估计方法

王轶, 陶小峰, 张平

北京邮电大学无线新技术研究所, 泛网无线通信教育部重点实验室, 北京 100876

收稿日期:2006-06-01 修回日期:1900-01-01 出版日期:2007-06-30 发布日期:2007-06-30
通讯作者: 王轶

Scheme of Pilot Design and Channel Estimation in MIMO-OFDM System

WANG Yi, TAO Xiao-feng, ZHANG Ping

Wireless Tech and Innovation Institute of Beijing Univ. of Posts and Telecom, Key Laboratory of Ubiquitous Wireless Communication, Ministry of Education, Beijing, China

Received:2006-06-01 Revised:1900-01-01 Online:2007-06-30 Published:2007-06-30
Contact: WANG Yi

摘要/Abstract

摘要：

针对多输入多输出正交频分复用系统，提出了一种利用空频分组码码字正交特性的导频设计方法，并提出了基于该导频的低复杂度信道估计算法. 推导了该信道估计方案的均方误差，并评估了复杂度计算公式. 计算机仿真验证了此算法可以以较低的复杂度获得近似最小均方误差（MMSE）信道估计算法的均方误差性能及误码率性能。

关键词: 格式化导频设计, 正交频分复用, 多输入多输出, 空频分组码

Abstract:

Orthogonal frequency-division multiplexing (OFDM) combined with multiple-input multiple-output (MIMO) is an efficient technique to improve wireless communication performance and capacity. To improve the performance of MIMO-OFDM system, a novel pilot sequence taking advantage of the orthogonality of space frequency block code (SFBC) as well as the corresponding simple channel estimation algorithm, is presented in this paper. The theoretic mean square error (MSE) of the algorithm is deduced and the complexity is also given. The performance of the proposed scheme is verified by simulations.

Key words: Key words: Channel estimation, Pilot design, Orthogonal frequency division multiplexing, Multiple input multiple output, Space Frequency Block Code

中图分类号:

TN911.23

王轶, 陶小峰, 张平. 一种MIMO-OFDM系统的导频设计及信道估计方法[J]. 北京邮电大学学报, 2007, 30(3): 45-49.

WANG Yi, TAO Xiao-feng, ZHANG Ping. Scheme of Pilot Design and Channel Estimation in MIMO-OFDM System[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2007, 30(3): 45-49.

参考文献

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一种MIMO-OFDM系统的导频设计及信道估计方法

Scheme of Pilot Design and Channel Estimation in MIMO-OFDM System

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