| 基于OFDM的抗多径效应研究 |
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| 引用本文： | 于海洋,杨华民,底晓强,李锦青. 基于OFDM的抗多径效应研究[J]. 长春理工大学学报(自然科学版), 2014, 0(1): 134-137 |
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| 作者姓名： | 于海洋 杨华民 底晓强 李锦青 |
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| 作者单位： | [1]长春理工大学计算机科学技术学院,长春130022 [2]长春理工大学光电测控与光信息传输技术教育部重点实验室,长春130022 |
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| 基金项目： | 工信部电子科技委发展研究课题资助 |
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| 摘 要： | 随着第四代移动通信的发展，多播复用技术受到越来越多的关注，而OFDM作为一种多载波的调制方法，在其中起着重要作用。本文讨论了OFDM对多径效应的抑制作用，基于802.11p协议，对OFDM所支持的最大延迟进行了理论研究。同时，建立城市场景的反射模型，求解不同条件下通信链路的最大延迟，并对OFDM的抗多径效应性能进行仿真分析。通过对仿真模型和理论数值的比对，验证了OFDM调制方式的抗多径效应性能，以期对无线通信领域提供有益参考。
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| 关 键 词： | OFDM 多径效应 802 11p 时延 |
Research on Multipath Effects Based on OFDM |
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| YU Haiyang,YANG Huamin,DI Xiaoqiang,LI Jinqing. Research on Multipath Effects Based on OFDM[J]. Journal of Changchun University of Science and Technology, 2014, 0(1): 134-137 |
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| Authors: | YU Haiyang YANG Huamin DI Xiaoqiang LI Jinqing |
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| Affiliation: | 1.School of Computer Science and Technology, Changchun University of Science and Technology, Changchun 130022; (2.Key Laboratory of Optoelectronics Measurement Control and Optical Information Transfer Technology under Education Ministry, Changchun University of Science and Technology, Changchun 130022) |
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| Abstract: | With the development of the fourth generation mobile communication,many people pay attention to the mul-ticast multiplexing. As a multi-carrier modulation method,OFDM plays an important role in the multicast multiplexing. In this paper,the multipath effects based on the OFDM is discussed;and according to the 802.11p protocol maximum delay which the OFDM supported in the theory is studied. Meanwhile, the reflection model of urban scene is estab-lished;the maximum delay of communication link is solved under different conditions;and the anti-multipath effects OFDM performance simulation are analyzed. Through verifying the numerical simulation models and theories, the OFDM modulation scheme against multipath path effects is validated, thus a useful reference on the field of wireless communications is provided. |
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| Keywords: | OFDM 802.11p OFDM Multipath effect 802.11p delay |
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