Adaptive channel estimation with Velocity estimator for W-CDMA Receiver

Adaptive channel estimation with Velocity estimator is proposed for 3rd generation cellular system called as IMT-2000, By using proposed Velocity estimator, we can select the best channel estimation mode depend on estimated vehicular speed. The comparison of several channel estimation schemes is studied analytically. Then each channel estimation's capability depend on vehicular speed is cleared, We studied Velocity estimator for channel estimation control. We evaluated the Velocity estimator and adaptive channel estimation with Velocity estimator under multi-speed environment. Proposed adaptive channel estimator can accomplish conflicting features, the wide vehicular speed range, low speed to 300km/h, good SNR performance, and the low power consumption for User Equipment.