APSK Modulation Recognition for DVB-S2 Using GLRT and Radius-Constellation Under Frequency Offset

作者：Wu, Hao^*; Yuan, Ying Jun; Huang, Zhi Tao; Zhou, Yi Yu

来源：Wireless Personal Communications, 2015, 82(3): 1213-1224.

DOI：10.1007/s11277-015-2276-7

• APSK
• GLRT
• Modulation recognition
• Radius-constellation

In this paper, the problem of recognizing APSK modulation for DVB-S2 is studied. We propose a novel recognition method, which is robust to carrier frequency offset and phase error. Firstly, the radius-constellation is defined and the algorithm to transform the traditional constellation to radius-constellation is proposed. And then, we propose a first-ever radius-constellation based method to recognize the APSK modulation, using Generalized Likelihood Ratio Test. Simulation results show that the proposed method is effective for APSK modulation recognition under frequency offset.

• 出版日期2015-6
• 单位中国人民解放军国防科学技术大学