| 宽带无线OFDM系统调制算法的仿真分析 |
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| 引用本文： | 任志勇,李转年.宽带无线OFDM系统调制算法的仿真分析[J].中国新通信,2010(17):40-44. |
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| 作者姓名： | 任志勇 李转年 |
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| 作者单位： | 1. 重庆电子工程职业学院,重庆401331;
2. 西安邮电学院,西安710061; |
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| 摘 要： | 为了根据信道条件的变化,动态地选择适当调制方式,以便最大限度地提高频谱利用率,文章采用正交频分复用（OFDM）的多载波技术,提供了在OFDM子载波上MQAM、MPSK等调制方式的仿真测试,得出了MQAM的容噪性能星座图和误比特率曲线,MPSK和MQAM误比特率随M取值的变化情况。这些分析结果为在第四代移动通信系统中,根据不同信噪比环境选择合适的调制方式提供了参考依据。
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| 关 键 词： | 宽带通信 正交频分复用 正交幅度调制 误比特率 |
Simulation and Analysis of Modulation Algorithm for Broadband Wireless OFDM System |
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| Ren Zhiyong,Li Zhuannian.Simulation and Analysis of Modulation Algorithm for Broadband Wireless OFDM System[J].China New Telecommunications,2010(17):40-44. |
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| Authors: | Ren Zhiyong Li Zhuannian |
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| Abstract: | In order to maximize frequency spectrum efficiency,The appropriate modulation system is selected dynamically according to the channel conditions.Based on orthogonal frequency division multiplexing（OFDM） for multi-carrier technology,MQAM and MPSK simulation test is provided in the OFDM subcarriers,obtained MQAM noise insensitive constellation and bit error rate curves.MPSK and MQAM BER changes with the M values was shown.also.These results provide a reference to select the appropriate modulation for different SNR environment in the fourth generation mobile communication system. |
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| Keywords: | broadband communications orthogonal frequency division multiplexing quadrature amplitude modulation BER |
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