Abstract: A method for detection of a control channel includes receiving data transmitted via the control channel. A control channel receive quality is estimated based on a metric difference between a metric of a known final trellis state and a minimum metric amongst the metrics of the trellis states based on the received data. It is decided whether or not to detect the control channel depending on the estimated control channel receive quality.

Abstract: A method for detection of a control channel includes receiving data transmitted via the control channel. A control channel receive quality is estimated based on a metric difference between a metric of a known final trellis state and a minimum metric amongst the metrics of the trellis states based on the received data. It is decided whether or not to detect the control channel depending on the estimated control channel receive quality.

Abstract: Correlations between the received signal to which pilot symbols have been applied at the transmitter end, and a correlation signal which contains the pilot symbols are carried out in the receiver in order to determine a path delay profile. Averaging processes are carried out over two or more delay profiles obtained in this way. Evaluations are carried out in one or more threshold value selection units (22.1, 22.2) on two or more averaged delay profiles with the aim of path selection. The parameters which govern the correlations and/or the averaging processes and/or the evaluations, and/or the repetition interval of these calculations are set as a function of the relative speed between the transmitter and the receiver, the frequency error between the carrier frequency of the received signal and the reference frequency that is set at the receiving end, and the noise level of the received signal.

Abstract: A method and apparatus for detecting paths of a received signal by analyzing a delay power profile of the received signal comprises a detection of peaks in the delay power profile by a peak detector having a threshold that is set based upon the noise environment. Peaks detected by the peak detector are passed to a data path detector having second threshold set at a power level higher than the threshold in the peak detector. In one embodiment, a third threshold is set within a filter to suppress secondary maxima created by the generation of the delay power profile. The detected paths may set in a rake type receiver.

Abstract: In the method for rake finger placement in a receiver, a delay profile of a multipath transmission channel is determined, wherein the signal strength is distributed over a plurality of delay times in at least one path component in the delay profile. At least a part of the at least one path component is removed or reduced by utilizing an impulse response characteristic of the path component in the delay profile. Following this, the rake fingers of the receiver are placed using the modified delay profile.

Abstract: Correlations between the received signal to which pilot symbols have been applied at the transmitter end, and a correlation signal which contains the pilot symbols are carried out in the receiver in order to determine a path delay profile. Averaging processes are carried out over two or more delay profiles obtained in this way. Evaluations are carried out in one or more threshold value selection units (22.1, 22.2) on two or more averaged delay profiles with the aim of path selection. The parameters which govern the correlations and/or the averaging processes and/or the evaluations, and/or the repetition interval of these calculations are set as a function of the relative speed between the transmitter and the receiver, the frequency error between the carrier frequency of the received signal and the reference frequency that is set at the receiving end, and the noise level of the received signal.

Abstract: The invention relates to an apparatus for receiving a data stream (102) which can be transmitted via at least one data transmission path (101, 101a, 101b, 101c), having a data stream receiver (100) for receiving the data stream (102), a power delay profile determination unit (303) for determining at least one power delay profile (300), a peak value detection device (501) for detecting at least one peak value (401a-401n) in the determined power delay profile (300), a data transmission path profile determination device (502) for determining a data transmission path profile for the at least one data transmission path (101), a filtering device (503) for suppressing shadow path signals (101s) and for outputting a finger positioning signal (504), and a setting device (305) for setting data transmission paths (101), which are associated with a data transmission, on the basis of the finger positioning signal (504).