Abstract: A method for monitoring utilization of a first connection in a mobile network includes: establishing an independent second connection, wherein the second connection is assigned a lower priority than the first connection and competes with the first connection for resources in the mobile network; sending test data having a low data volume via the second connection; and detecting reception of the test data. Complete reception of the test data indicates that the first connection is not fully utilized.

Abstract: A method for monitoring utilization of a first connection in a mobile network includes: establishing an independent second connection, wherein the second connection is assigned a lower priority than the first connection and competes with the first connection for resources in the mobile network; sending test data having a low data volume via the second connection; and detecting reception of the test data. Complete reception of the test data indicates that the first connection is not fully utilized.

Abstract: In one embodiment, a rake receiver for a spread-spectrum (SS) signal has a plurality of rake fingers corresponding to different multipath components of the SS signal and sampling circuitry generating a stream of samples corresponding to the SS signal. A first rake finger has a detection path detecting symbols based on the samples, a synchronization (synch) path, and a weighting controller. Front-end circuitry in the synch path applies three or more time delays, weighting, and SS correlation to the stream of samples to generate front-end output signals. Back-end circuitry in the synch path generates one or more control signals for controlling the timing of the sampling circuitry based on the front-end output signals. The weighting controller adaptively controls the weighting applied by the front-end synch circuitry to minimize effects of one or more other multipath components associated with one or more other rake fingers of the rake receiver.

Abstract: The invention relates to a code-tracking method and a rake receiver for CDMA communication systems of low complexity yielding stable tracking. Received signal are distributed to a plurality of receiver fingers of a rake receiver. Each receiver finger i is assigned to a signal path of the transmitted signal which is subject to phase shift and power dissipation due to reflection, diffraction and scattering. According to the invention in each receiver finger i an estimation of the timing delay {circumflex over (?)}(i) is provided and interference from other signal components j are subtracted from signal components of the current signal path i (i?j) yielding a reliable estimated timing delay {circumflex over (?)}.

Abstract: The invention relates to a channel estimation algorithm is proposed for a RAKE receiver for CDMA communication systems operating in the downlink of a mobile communication scenario yielding an improved phasor estimation. Received signals are distributed to a plurality of receiver fingers of a RAKE receiver. Each receiver finger i is assigned to a signal path of the transmitted signal which is subject to phase shift and power dissipation due to reflection, diffraction and scattering. According to the invention the approach partly cancels multipath/multiuser interference and offers the advantage of being able to cope with physically closely spaced multipaths.

Abstract: The invention is directed to a method for signal processing in a rake receiver for spread spectrum signals and is directed to a rake receiver for spread spectrum signals including a plurality of rake fingers (9, 10, 11) each rake finger being adapted to receive a signal (7, 8) being part of a multipath signal (2) and associated with a path of the multipath, the signal (7, 8) having a delay (?) relative to an other signal associated with an other path of the multipath (7, 8), the receiver comprises a summation unit (37) for generating an output signal from the signals received from of at least some of the rake fingers (9, 10, 11), the output signal being a summation signal having and improved signal to noise ratio (SNR) if compared with the signal to noise ratio (SNR) of at least, one of the rake fingers (9, 10, 11), a timing error detector (12) for detecting a delay (?) between signals of at least two rake fingers (9, 10, 11) and for generating a timing error signal which is sent to a unit (6) for compensatin

Abstract: In one embodiment, a rake receiver for a spread-spectrum (SS) signal has a plurality of rake fingers corresponding to different multipath components of the SS signal and sampling circuitry generating a stream of samples corresponding to the SS signal. A first rake finger has a detection path detecting symbols based on the samples, a synchronization (synch) path, and a weighting controller. Front-end circuitry in the synch path applies three or more time delays, weighting, and SS correlation to the stream of samples to generate front-end output signals. Back-end circuitry in the synch path generates one or more control signals for controlling the timing of the sampling circuitry based on the front-end output signals. The weighting controller adaptively controls the weighting applied by the front-end synch circuitry to minimize effects of one or more other multipath components associated with one or more other rake fingers of the rake receiver.

Abstract: The invention relates to a code-tracking method and a rake receiver for CDMA communication systems of low complexity yielding stable tracking. Received signal are distributed to a plurality of receiver fingers of a rake receiver. Each receiver finger i is assigned to a signal path of the transmitted signal which is subject to phase shift and power dissipation due to reflection, diffraction and scattering. According to the invention in each receiver finger i an estimation of the timing delay {circumflex over (&tgr;)}(i) is provided and interference from other signal components j are subtracted from signal components of the current signal path i (i≠j) yielding a reliable estimated timing delay {circumflex over (&tgr;)}.

Abstract: The invention relates to a channel estimation algorithm is proposed for a RAKE receiver for CDMA communication systems operating in the downlink of a mobile communication scenario yielding an improved phasor estimation. Received signals are distributed to a plurality of receiver fingers of a RAKE receiver. Each receiver finger i is assigned to a signal path of the transmitted signal which is subject to phase shift and power dissipation due to reflection, diffraction and scattering. According to the invention the approach partly cancels multipath/multiuser interference and offers the advantage of being able to cope with physically closely spaced multipaths.

Abstract: The invention is directed to a method for signal processing in a rake receiver for spread spectrum signals and is directed to a rake receiver for spread spectrum signals comprising a plurality of rake fingers (9, 10, 11) each rake finger being adapted to receive a signal (7, 8) being part of a multipath signal (2) and associated with a path of the multipath, said signal (7, 8) having a delay (&tgr;) relative to an other signal associated with an other path of the multipath (7, 8), said receiver comprises a summation unit (37) for generating an output signal from the signals received from of at least some of the rake fingers (9, 10, 11), said output signal being a summation signal having and improved signal to noise ratio (SNR) if compared with the signal to noise ratio (SNR) of at least one of the rake fingers (9, 10, 11), a timing error detector (12) for detecting a delay (&tgr;) between signals of at least two rake fingers (9, 10, 11) and for generating a timing error signal which is sent to a unit (6) for