Guaranteeing wireless communication reliability via an extended hybrid carrier system

In this paper, we propose an extended hybrid carrier system based on the weighted fractional Fourier transform to ensure the reliability of wireless communication. The proposed scheme improves the dispersion and compensation capabilities of the hybrid carrier system for channel fading through the design of the signal power distribution, which has greatly reduced the probability of high-power distortion of the signal and improved the bit error rate performance as a result. Theoretical analysis has shown the superiority of the extended hybrid carrier system. With a lower cost of computational complexity increment, the proposed scheme obtains a performance improvement without occupying additional time-frequency physical resources. Compared with the existing hybrid carrier scheme, numerical simulation results have shown that the proposed extended hybrid carrier scheme has better anti-fading performance under the doubly-selective channel and improves the reliability of the wireless communication system effectively.