Journal of Electrical and Electronic Engineering
Volume 6, Issue 3, June 2018, Pages: 75-79
Received: Jul. 13, 2018;
Accepted: Jul. 31, 2018;
Published: Aug. 22, 2018
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Li Deng, School of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan City, China; School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, China
Quanyi Liu, School of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan City, China
Yuanhua He, School of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan City, China
Qian Chen, School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, China
In this paper, a new kind of nonlinear combining receiver of fast frequency hopping/multiple frequency shift keying (FFH/MFSK) modulation in GPS system is proposed. The performance of the receiver is analyzed in the effects of partial band noise jamming over additive white Gaussian noise channel and Ricean fading channel. The diversity of the system is performed using multiple hops per data bit. The non-central F distribution is found in the random variable of the division combining algorithm under the partial-band noise jamming in the additive white Gaussian noise channel. The mathematical results of the bit error ratio of the division combining system are achieved in both fading and non-fading channels. The numerical results are achieved by the simulation environment of the signal transmission while the signal to noise ratio was relatively small and the partial band noise jamming factor is relatively large. It was shown that the GPS system using division combining receiver has better performance under the strong partial band interference than the system without diversity and system with self-normalized combining receiver. This performance gain is because that the interference signal is scattered into several hops and partly diminished by the operation of division algorithm. As its simple structure to be implemented and anti-interference property, the proposed combining algorithm is useful for GPS signal transmission in the strong partial band noise jamming environment.
Performance Analysis of FFH/MFSK Using Division Combining Receiver in GPS System, Journal of Electrical and Electronic Engineering.
Vol. 6, No. 3,
2018, pp. 75-79.
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