Combinatory Design of WFRFT Recognition Based on Higher Order Cumulants and Subtractive Cluster

LIANG Yuan; XIANG Xin; WANG Rui; LIU Kun; YIN Liyan; WANG Peng

doi:10.15892/j.cnki.djzdxb.2021.06.007

Journal of Projectiles, Rockets, Missiles and Guidance >

2021 , Vol. 41 >Issue 6: 33 - 38

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2021.06.007

Combinatory Design of WFRFT Recognition Based on Higher Order Cumulants and Subtractive Cluster

LIANG Yuan ¹ ,
XIANG Xin ¹ ,
WANG Rui ¹ ,
LIU Kun ² ,
YIN Liyan ² ,
WANG Peng ²

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¹ Aeronautics Engineering College, Air Force Engineering University, Xi'an 710038,China
² Graduate School, Air Force Engineering University, Xi'an 710051, China

Received date: 2020-05-27

Online published: 2025-02-07

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Abstract

In order to detect and recognize the weighted-type fractional fourier transform (WFRFT)-based hybrid carrier signals, a combinatory modulation recognition method was provided based on higher order cumulants and adaptive subtractive cluster algorithm. First, as for the three traditional baseband modulations, the initial recognition and corresponding constellation mapping were implemented by properly selecting the thresholds for $C 42$ . Besides, the adaptive subtractive radius was decided on the additive Gaussian white noise’s power. Finally, by utilizing soft-decision subtractive cluster, the corresponding constellation size could be inferred for the baseband modulations. Simulation results showed that the WFRFT order can be well recovered and the baseband modulation types can also be decided initially based on $C 42$ ; the proposed adaptive-radius subtractive cluster can obtain better recognition performances with regards to baseband constellation’s size compared to the traditional fixed-radius design.

Key words： modulation recognition; weighted-type fractional Fourier transform; higher order cumulants; adaptive subtractive cluster algorithm; baseband constellation

Cite this article

LIANG Yuan , XIANG Xin , WANG Rui , LIU Kun , YIN Liyan , WANG Peng . Combinatory Design of WFRFT Recognition Based on Higher Order Cumulants and Subtractive Cluster[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2021 , 41(6) : 33 -38 . DOI: 10.15892/j.cnki.djzdxb.2021.06.007

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