| 改进的增加时间分集的OFDM系统 |
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| 引用本文： | 袁炼,李文明,余锦军.改进的增加时间分集的OFDM系统[J].中国电子科学研究院学报,2009,4(4):395-398. |
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| 作者姓名： | 袁炼 李文明 余锦军 |
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| 作者单位： | 南京电子技术研究所,南京,210013 |
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| 摘 要： | 在现有文献的基础上提出了一种改进的增加时间分集的OFDM系统,在原来的系统中增加了空时编码。在接收端,采用一种低复杂度的MMSE信道均衡算法使得系统的空间分集和时间分集得以有效地利用。仿真结果表明,这种结构可以提高系统在高速移动信道环境下的误码率性能和稳定性。
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| 关 键 词： | OFDM 时间分集 空间分集 多普勒频移 子载波间干扰 SIC |
Modified OFDM System Which Can Increase Time Diversity |
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| YUAN Lian,LI Wen-ming,YU Jin-jun.Modified OFDM System Which Can Increase Time Diversity[J].Journal of China Academy of Electronics and Information Technology,2009,4(4):395-398. |
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| Authors: | YUAN Lian LI Wen-ming YU Jin-jun |
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| Affiliation: | Nanjing Electronic Technologic Research Institute;Nanjing 210013;China |
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| Abstract: | A modified OFDM System is proposed which can increase time diversity.The main modification is combining the original system with Space-Time coding,and at the receiver,a low-complexity MMSE equalizer is selected which can efficiently utilize both time diversity and space diversity in the system.Simulation results show that the proposed system can achieve performance improvement and stability in high mobility environment. |
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| Keywords: | OFDM time diversity space diversity doppler frequency shift ICI SIC |
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