Abstract:

The signal of the differential frequency hopping system has a broadband when it hops, and has a narrowband in each hop. This paper proposes a frequency domain equalization algorithm for the differential frequency hopping system, i.e., the multi-hopping frequency domain equalization algorithm based on the least-mean-square. The shortages of the frequency domain equalization algorithm based on minimum mean square error criteria and the least-meansquare frequency domain equalization algorithm are analyzed, and then the multi-hopping frequency domain equalization algorithm is proposed based on the least-mean-square for the differential frequency hopping system. The algorithm design and its structure are given in detail. The simulation result shows that the proposed algorithm is very efficient to equalize the channel for the differential frequency hopping system over a frequency-selective fading channel, and can improve the BER performance of the frequency hopping system.