Space-time channel can be described by vector channel impulse response (VCIR).Estimation of the VCIR is very important for Smart Antenna Systems.In this paper
based on multi-user decorrelation
a blind VCIR estimation method for CDMA with aperiodic spreading code is proposed.The new method has the ability to resist near-far effect.Computer simulation demonstrates that the accuracy of the VCIR estimated by the new method can meet the need to extract DOA and time delay information.