| 利用CPM实现自适应OFDM系统研究 |
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| 引用本文： | 杨雪梅,顾亚平,张俊.利用CPM实现自适应OFDM系统研究[J].声学技术,2007,26(3):510-513. |
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| 作者姓名： | 杨雪梅 顾亚平 张俊 |
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| 作者单位： | 中国科学研究院声学研究所东海研究站,上海,200032 |
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| 摘 要： | 在正交频分复用(OFDM)系统中应用自适应技术能有效地提高系统性能。正交频分复用-连续相位调制(OFDM-CPM)通过CPM相关相位状态引入记忆,从而获得比传统OFDM更好的误码性能。文章提出了一种利用单一的CPM调制方式实现自适应OFDM-CPM系统的新方案。仿真结果表明,选取最佳的CPM参数组合,通过改变CPM的参数来实现自适应OFDM-CPM调制,能够获得比传统调制方式要低的门限值,同时系统硬件实现更为简单。
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| 关 键 词： | 正交频分复用-连续相位调制 自适应调制 |
| 文章编号： | 1000-3630（2007）-03-0510-04 |
| 收稿时间： | 2006-11-30 |
| 修稿时间： | 2006-11-302007-02-10 |
A novel CPM scheme for adaptive modulation based OFDM system |
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| YANG Xue-mei,GU Ya-ping and ZHANG Jun.A novel CPM scheme for adaptive modulation based OFDM system[J].Technical Acoustics,2007,26(3):510-513. |
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| Authors: | YANG Xue-mei GU Ya-ping and ZHANG Jun |
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| Affiliation: | Institute of Acoustics, Chinese Academy of Sciences, Shanghai, 200032, China |
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| Abstract: | Application of adaptive technique can effectively improve the system performance of OFDM systems. By using the concept of correlated phase state, OFDM-CPM has better BER performance than traditional OFDM. A new adaptive modulation scheme is proposed to use single CPM based on OFDM-CPM system. Simulation results show that an adaptive OFDM-CPM system can be realized via selecting the optimal CPM parameters and changing these parameters. A lower threshold value can be obtained compared with systems using the traditional modulation. Hardware implementation is easy. |
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| Keywords: | OFDM-CPM |
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