摘要: |
基于多输入多输出正交频分复用(MIMO-OFDM)系统,研究了LS信道估计算法,提出了一种训练序列和块状导频联合LS信道估计算法,给出了权值的计算公式.理论推导和计算机仿真表明,这种改进型的LS信道估计方法提高了LS信道估计的误码率性能,并具有较高的灵活性和较低的复杂度增长. |
关键词: 信道估计 多输入多输出 正交频分复用 最小平方 联合信道估计 |
DOI:10.3969/j.issn.1001-893X. |
投稿时间:2006-07-27修订日期:2006-11-30 |
基金项目:国家自然科学基金 |
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A Modified LS Channel Estimation Method for MIMO-OFDM System |
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Abstract: |
LS channel estimation method based on MIMO -OFDM system is studied. A training -based and pilot - aided joint LS channel estimation method is presented, and the formula for calculating optimal weight coefficients is derived. Computer simulation shows that the modified LS channel estimation method improves the BER performance with high flexibility and little complexity increase. |
Key words: channel estimation MIMO OFDM LS joint channel estimation |