ROBUSTNESS OF THE SUBSPACE METHOD FOR BLIND SIGNATURE WAVEFORM ESTIMATION WITH RESPECT TO CHANNEL ORDER IN ASYNCHRONOUS DS-CDMA SYSTEMS

摘要

The robustness of the subspace method for blind signature waveform estimation with respect to channel order is analyzed in asynchronous DS-CDMA systems theoretically. Theoretical analysis and simulation results show that the overestimating of the channel order will lead to the degradation of the quality of the estimated signature waveform. So we should adopt the channel order as small as possible.