A FRFT-OFDM system and equalization in Ka-band for Doppler effect elimination
抗多普勒频移的Ka频段FRFT-OFDM系统及其均衡

Concerning the negative influence of Doppler shift on OFDM system in Ka-band, FRFT-OFDM system is proposed. A mobile satellite channel model in Ka-band with Doppler shift is established. After the optimal orders of FRFT in different conditions being selected, the advantage of this system on anti-Doppler-shift is analyzed. The system is equalized both in fractional Fourier domain and Fourier domain. The simulation results show that 1)the more serious Doppler shift is, the more obviously this system performance would be improved; 2)the proposed system under optimal order has better performance of equalization than the traditional system in different conditions.