Patent: Method and arrangement for beamforming a rake receiver for one-user reception for the uplink channel in mobile radio systems

A solution for improving the reception and increasing the signal quality of mobile stations in CDMA-based mobile radio systems of the third generation is to be specified, which is less complex than previously known solutions. In the method according to the invention, in which a rake receiver is connected downstream of a linear antenna array, the signals are first received via N antennas of an antenna array and forwarded to beamformers, at the same time the directions of the individual paths of the received signals are estimated and forwarded for forwarding the received signals to beamformers then the K strongest paths are determined from the estimated directions of the paths and sorted according to their performance. Then the signals of the directions omega¶1¶, ..., omega¶K¶ determined in this way are transferred to individual beamformers, the number of which corresponds to the K strongest paths, then the weighting factors w (k) are determined in the kth beamformer multiplied by the signals of the outputs of the antenna array and the directional characteristic thus generated is given to the respectively assigned rake finger and finally the directional characteristics from each of the rake fingers are combined to form the overall received signal of the 2D rake receiver. This creates a directional characteristic for each individual finger of the 2D rake receiver that has optimal directivity.     «

A solution for improving the reception and increasing the signal quality of mobile stations in CDMA-based mobile radio systems of the third generation is to be specified, which is less complex than previously known solutions. In the method according to the invention, in which a rake receiver is connected downstream of a linear antenna array, the signals are first received via N antennas of an antenna array and forwarded to beamformers, at the same time the directions of the individual paths of t...     »