Volume 6, Issue 3, June 2018, Page: 75-79
Performance Analysis of FFH/MFSK Using Division Combining Receiver in GPS System
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
Received: Jul. 13, 2018;       Accepted: Jul. 31, 2018;       Published: Aug. 22, 2018
DOI: 10.11648/j.jeee.20180603.12      View  507      Downloads  71
Abstract
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.
Keywords
FFH, MFSK, Division Combining, Fading Channel
To cite this article
Li Deng, Quanyi Liu, Yuanhua He, Qian Chen, 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. doi: 10.11648/j.jeee.20180603.12
Copyright
Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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