| 基于自适应调制的OFDM系统 |
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| 引用本文： | 袁晓芳,刘耀东,张洪顺.基于自适应调制的OFDM系统[J].通信对抗,2006(1):43-46. |
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| 作者姓名： | 袁晓芳 刘耀东 张洪顺 |
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| 作者单位： | 重庆通信学院,重庆400035 |
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| 摘 要： | 首先引入了一种可以在未来无线多媒体移动通信环境中提高数据传输速率和用户平均传输容量的系统，即基于自适应调制功能的正交频分复用（OFDM）系统的框图，然后分别利用无线LAN标准802．11a和IEEE 802．15．TG3a中规定参数对采用BPSK，QPSK，16QAM，64QAM四种调制方式的OFDM传输系统在瑞利衰减信道和存在多径效应的情况下进行了仿真，并对它们的BER性能进行了比较，最后对该系统作了客观分析。
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| 关 键 词： | 自适应 OFDM 仿真 多媒体通信 |
Adaptive Modulation Based OFDM System |
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| YUAN Xiao-fang,LIU Yao-dong,ZHANG Hong-shun.Adaptive Modulation Based OFDM System[J].Communication Countermeasures,2006(1):43-46. |
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| Authors: | YUAN Xiao-fang LIU Yao-dong ZHANG Hong-shun |
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| Abstract: | Adaptive modulation based OFDM system block is introduced and discussed, which is a promising way to increase the data rate and to achieve larger user throughputs. In this paper, adaptive modulation based BPSK,QPSK,16QAM and 64QAM systems applied to a coded OFDM system in a Rayleigh fast fading channel environment has been investigated and the BER performance of all these modulation techniques have been compared. At the end, the advantages and disadvantages of this system to the future wireless multimedia communications are discussed. |
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| Keywords: | adaptive OFDM simulation multimedia communication |
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