Performance Analysis and Optimization Based on Adaptive Modulation and Chaotic Interleaving for Helicopter-Satellite Communications

• Published in: Wireless personal communications 2018-03, Vol.99 (2), p.597-617
• Main Authors: Elaty, Emad A., Abd-Elnaby, Mohammed, Abd El-atty, Saied M., El-Dolil, Sami A., Dessouky, Moawad I., Abd El-Samie, Fathi E.
• Format: Article
• Language: English
• Subjects: Adaptive control; Automatic control; Automatic frequency control; Binary phase shift keying; Bit error rate; Communications Engineering; Computer Communication Networks; Computer simulation; Doppler effect; Engineering; Frequency control; Mathematical analysis; Networks; Quadrature phase shift keying; Rotor blades; Rotor blades (turbomachinery); Satellite communications; Signal,Image and Speech Processing; Variation
• ISSN: 0929-6212; 1572-834X
• DOI: 10.1007/s11277-017-4224-1

Overcoming periodic blockage of the received signal and the carrier frequency fluctuations caused by rotor blades and Doppler shift, respectively, are considered the most challenging issues in helicopter-satellite communication systems. In this study, we propose an automatic frequency control method based on an adaptive modulation scheme. We employ a hybrid modulation not only depending on quadrature phase shift keying, but also based on binary phase shift keying for accurate cancellation of periodic blockage. On the other hand, we apply a chaotic interleaving scheme with a hybrid modulation scheme in order to achieve a better Bit Error Rate (BER) performance in LOS and NLOS environments. Finally, we validate the mathematical analysis of the proposed scheme through simulations. We evaluated the performance of the proposed scheme and performed a comparison with conventional schemes. Our results show that the proposed scheme is significantly capable of reducing the acquisition time and working with various velocities of helicopter blades in addition to providing a better BER performance in shadow fading environments.