利用四阶累积量检测多载波调制

MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341) Pub Date : 1999-10-31 DOI:10.1109/MILCOM.1999.822720

W. Akmouche

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引用次数: 66

摘要

本文讨论了调制分类。我们的目标是区分OFDM类型的单载波(SC)调制和多载波(MC)调制。由于MC调制是渐近高斯的，我们在这里提出了一个检测器，使用Giannakis和Tsatsanis(1990)基于四阶累积量的统计检验。此测试适用于数字调制的特定情况，可以降低算法的复杂性。仿真表明，在最坏的情况下(滤波256-QAM与32-OFDM)，检测器实现检测概率Pd=0.99，假警报概率Pfa=10/sup -2/。

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Detection of multicarrier modulations using 4th-order cumulants

This paper deals with modulation classification. Our goal is to discriminate single-carrier (SC) modulations from multicarrier (MC) modulations of OFDM type. Because MC modulations are asymptotically Gaussian, we propose here a detector using the statistical test of Giannakis and Tsatsanis (1990) based on fourth-order cumulants. This test is here adapted to the specific case of digital modulations which allows one to reduce the algorithm complexity. Simulations are provided and show that in the worst case (filtered 256-QAM versus 32-OFDM) the detector achieves a probability of detection Pd=0.99 for a probability of false alarm Pfa=10/sup -2/.

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MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341)

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