| 一种基于“相位距离”降低CPM解调复杂度的新算法 |
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| 引用本文： | 方继承,于全.一种基于“相位距离”降低CPM解调复杂度的新算法[J].信号处理,2011,27(7). |
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| 作者姓名： | 方继承 于全 |
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| 作者单位： | 1. 国防科技大学电子科学与工程学院,湖南长沙,410073
2. 中国电子设备系统工程公司,北京,100039 |
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| 摘 要： | 连续相位调制(CPM)是一种恒包络的高效调制方式,由于其解调算法复杂度高,其应用长期以来受到限制。传统的CPM解调算法基本上是基于幅度信息而未考虑相位信息,因此复杂度较高。本文提出了一种依据CPM信号特征的相位距离的定义,利用2RC-4CPM对该定义的有效性进行了验证,并将其应用于降低最大似然序列检测算法的路径数,从而大幅降低了最优接收机解调的复杂度。仿真表明,在选取适当门限值的情况下,基于相位距离的最大似然序列检测算法性能接近最优接收机。
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| 关 键 词： | CPM 连续相位调制 低复杂度 相位距离 |
A Novel Algorithm for Reducing MLSE Complexity of CPM Based on Phase Distance |
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| FANG Ji-cheng,YU Quan.A Novel Algorithm for Reducing MLSE Complexity of CPM Based on Phase Distance[J].Signal Processing,2011,27(7). |
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| Authors: | FANG Ji-cheng YU Quan |
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| Institution: | FANG Ji-cheng~1 YU Quan~2 (1.School of Electronic Science and Engineering,National University of Defense and Technology,Changsha 410073,2.China Electronics Equipment System Engineering Corporation,Beijing 100039) |
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| Abstract: | Continuous Phase Modulation(CPM)is an efficient modulation scheme with constant envelop,however its applications have been constrained due to high complexity of the demodulation algorithms.Traditional demodulation algorithms are based on amplitude information rather than phase information,which results in its high complexity.A conception called Phase Distance based on the inherent characteristic of CPM signal is defined and verified based on the 2RC-4CPM.And a novel algorithm used to reduce the path number ... |
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| Keywords: | CPM Continuous Phase Modulation Low Complexity Phase Distance |
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