Quality Improvement of Video over UMTS by Estimating the Velocity of the Mobile Terminal

Inhalt:
One challenge of beyond 3G systems are applications with high demands on the quality of service. Transmission and reception of video in a moving car are prominent examples. We present a receiver which estimates the velocity of the mobile terminal for the Universal Terrestrial Radio Access (UTRA) uplink connection in Frequency Division Duplex (FDD) mode. In contrast to a receiver with conventional estimation of the time-variant mobile radio channel with multiple propagation paths, we have designed a channel estimator, which adapts to the estimated velocity. Parameters are optimized for a wide range of speeds. It is shown that the proposed receiver can reduce the block error ratio (BLER) significantly even for high speed of the mobile terminal compared to conventional solutions.