Analysis on optimal jamming against 16-QAM Signal

作者：Sun, Zhiguo; Xu, Tianyu; Deng, Changqing; Ning, Xiaoyan^*; Guo, Lili

来源：Journal of Harbin Engineering University, 2018, 39(7): 1245-1250.

DOI：10.11990/jheu.201704090

• Additive white Gaussian noise channel
• Digital modulations
• Jamming strategies
• Jamming to signal ratio
• Quadrature amplitude modulation signals
• Quadrature phaseshift keying (QPSK)
• Quadrature-amplitude modulations (QAM)
• Transmission performance

Electronic jamming has shown a high efficiency in electronic warfare;however, only few theoretical analyses have been conducted on optimal jamming. In this paper, the optimal jamming against a quadrature amplitude modulation (QAM) signal is theoretically analyzed. A general formula is deduced for the bit error rate (BER) of an M-QAM signal under a two-dimensional digital modulation jamming over an additive white Gaussian noise (AWGN) channel. The optimal jamming against a 16-QAM communication system based on convex analysis is studied. In addition, the transmission performance of a 16-QAM communication system under the optimal jamming is studied. The effects of phase difference and time delay difference on the jamming performance is also analyzed. The simulation experiment results verify the accuracy of the BER formula of an M-QAM signal under a two-dimensional digital modulation jamming. Both the theoretical analysis and the simulation experiments show that quadrature phase shift keying (QPSK) is the optimal jamming against a 16-QAM communication system when the jamming-to-signal ratio is larger than -3 dB.

• 出版日期2018
• 单位哈尔滨工程大学