Research into HF channel equalization based on DS-VCC-DDEA algorithm
YU Cheng-fei · Journal of Circuits and Systems · 2013
In allusion to the excellent performance for high SNR and error spread for low SNR,DS-VCC-DDEA is researched based on the proposition of VCC-DDEA and DFE-VCC-DDEA in Narrow-Band HF(High Frequency) single serial tone data communication,which is realized by switching the equalization algorithm between VCC-DDEA and DFE-VCC-DDEA guided by the real-time SNR estimation from the current frame.DS-VCC-DDEA not only abandons the hypothesis that the channel coefficients is constant for DDEA in the frame,but also avoids the short-back of DFE equalizer,and can fetch the integral performance improvement for different SNR.Simulation validates its advantage to DDEA,VCC-DDEA and DFE-VCC-DDEA.