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利用CPM实现自适应OFDM系统研究

A novel CPM scheme for adaptive modulation based OFDM system
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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。 Application of adaptive technique can effectively improve the system performance of OFDM sy- stems. 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.
作者 杨雪梅 顾亚平 张俊
机构地区 中国科学研究院声学研究所东海研究站
出处 《声学技术》 CSCD 北大核心 2007年第3期510-513,共4页 Technical Acoustics
关键词 正交频分复用-连续相位调制 OFDM-CPM 自适应调制 OFDM-CPM adaptive modulation
分类号 TB556 [理学—声学]
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参考文献10

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二级参考文献4

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共引文献8

声学技术
2007年 第3期

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