| MIMO-OFDM系统ICI自消除改进算法 |
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| 引用本文： | 王振朝,张建平,种少飞.MIMO-OFDM系统ICI自消除改进算法[J].电视技术,2014,38(3):147-151. |
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| 作者姓名： | 王振朝 张建平 种少飞 |
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| 作者单位： | 河北大学电子信息工程学院,河北大学电子信息工程学院,河北大学电子信息工程学院 |
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| 摘 要： | 现有的ICI自消除算法在提高系统载干比(CIR)的同时会降低系统的抗噪声性能。针对这一问题,提出一种在发送端对数据进行复数加权共轭运算的ICI自消除改进算法,这种算法造成的相位旋转最小,可以有效减少接收信号因相位旋转而导致的相位误差,从而提高系统的抗噪声性能。仿真结果表明,所提算法具有与已有算法相近的ICI抑制能力,但比现有算法具有更好的抗噪声性能。
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| 关 键 词： | MIMO-OFDM 载波频偏 子载波间干扰 自消除算法 |
| 收稿时间： | 6/4/2013 12:00:00 AM |
| 修稿时间： | 2013/7/24 0:00:00 |
A Novel ICI Self-Cancellation Scheme for MIMO-OFDM System |
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| wangzhenchao,zhangjianping and chongshaofei.A Novel ICI Self-Cancellation Scheme for MIMO-OFDM System[J].Tv Engineering,2014,38(3):147-151. |
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| Authors: | wangzhenchao zhangjianping and chongshaofei |
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| Affiliation: | College of Electronic and Information al Engineering , HeBei University,College of Electronic and Information al Engineering , HeBei University,College of Electronic and Information al Engineering , HeBei University |
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| Abstract: | MIMO-OFDM system suffers from ICI caused by frequency offset. When improving the carrier to interference ratio (CIR), the existing ICI self-cancellation algorithm may reduce the anti-noise performance. To solve the problem, a novel ICI self-cancellation scheme that subcarrier signals are remapped in data complex weighted conjugate method is proposed in this paper, the proposed algorithm with the minimum phase rotation can effectively reduce the phase error caused by phase rotation of reception signal, which improves the system anti-noise performance. From the simulation, the method both existing algorithm and proposed algorithm can reduce the ICI effect, furthermore, the proposed algorithm can reduce the BER of the system. |
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| Keywords: | MIMO-OFDM carrier frequency offset ICI self-cancellation scheme |
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