Abstract: A mobile telecommunications system is described in which a base station allocates control channel elements for signalling resource allocation data for a number of mobile telephones. The CCEs are partitioned into at least two groups, one for uplink allocations and one for downlink allocations. In one embodiment, the group size is fixed while in another embodiment, the group size changes between sub-frames. In another embodiment, the group size is varied in a pseudo-random manner.

Abstract: A mobile telecommunications system is described in which a base station allocates control channel elements for signalling resource allocation data for a number of mobile telephones. The CCEs are partitioned into at least two groups, one for uplink allocations and one for downlink allocations. In one embodiment, the group size is fixed whilst in another embodiment, the group size changes between sub-frames. In another embodiment, the group size is varied in a pseudo-random manner.

Abstract: An apparatus generates a scrambling code in a mobile communication system by performing one or more mask operations on an input state value. The apparatus includes a register memory which receives the state value from an upper layer of the system, a generator which generates an extended state value by performing a mask operation based on initial values of the state value, and a code generator which generates a scrambling code based on at least a first state value which is continuously selected from among the extended state value, a second state value generated based on at least state values (L,R) which correspond to the first state value, and an initial value which has not been used from the initial values.

Abstract: The present invention discloses a method for searching multipaths of a mobile communication system, which includes the steps of: performing a coherent detection on a reversed I and Q channel signals of a DPCCH transmitted form a mobile station, multiplying the detected signal by a pilot pattern to accumulate a pilot symbol section in a corresponding section, and performing a coherent accumulation on the other symbol section in a symbol basis; calculating energy value for each coherently accumulated I and Q channel signals; multiplying the calculated energy values by a weight that has been multiplied by the pilot symbol section and another weight that has been multiplied by the other symbol section, respectively; noncoherently accumulating the energy values multiplied by variable weights, and saving the energy values; comparing the saved energy values with a periodically designated threshold; and searching timing information as many as a number of fingers in order of highest energy value according to the compa

Abstract: A method for generating scrambling codes in a mobile communications system generates an extended code performing a masking operation. A movable selector performs the mask operation to extract continued bits from the extended code under control of a controller. A masked code is selected by the selector, and the selected code and another masked code are subjected to an EXOR operation to generate a scrambling code.

Abstract: The present invention discloses a method for searching multipaths of a mobile communication system, which includes the steps of: performing a coherent detection on a reversed I and Q channel signals of a DPCCH transmitted form a mobile station, multiplying the detected signal by a pilot pattern to accumulate a pilot symbol section in a corresponding section, and performing a coherent accumulation on the other symbol section in a symbol basis; calculating energy value for each coherently accumulated I and Q channel signals; multiplying the calculated energy values by a weight that has been multiplied by the pilot symbol section and another weight that has been multiplied by the other symbol section, respectively; noncoherently accumulating the energy values multiplied by variable weights, and saving the energy values; comparing the saved energy values with a periodically designated threshold; and searching timing information as many as a number of fingers in order of highest energy value according to the compa

Abstract: A device and method for a multiuser detection in a DS-CDMA system largely reduces an amount of data computation while reducing noise due to MAI. The method for a multiuser detection in a DS-CDMA system includes the steps of receiving a band-spread signal by a plurality of spreading codes respectively transmitted by each of multiusers, obtaining a plurality of sampled outputs from each of multiuser's messages by despreading the received signal with a matched filter, obtaining an MAI signal included in the plurality of sampled outputs by applying a minus (−) value of a cross-correlation value between the multiuser's spreading codes to the plurality of sampled outputs, removing the MAI signal from the sampled outputs by subtracting the MAI signal from the sampled outputs, and generating a binary data by comparing the sampled outputs from which the MAI signal is to be removed with a threshold value to recover the multiuser's messages.

Abstract: Device and method for decorrelated multiuser detection in a DS-CDMA system, is disclosed, which allows real time removal of an MAI(Multiple Access Interference) occurred in the DS-CDMA system, the method including the steps of(a) receiving signals band spread by multiuser spreading codes transmitted from multiuser respectively and despreading the received signals with conjugate complexes of the multiuser spreading codes, to restore each of multiuser messages y, (b) spreading each of the multiuser messages with the multiuser spreading codes, summing, despreading with the conjugate complexes of the multiuser spreading codes, low pass filtering, and subtracting from the multiuser messages y under bit synchronization, for extracting multiple access interference signals Qy according to cross-correlation coefficients between the multiuser spreading codes contained in each of the messages y; for the first time, and (c) adding negative values of the multiple access interference signals Qy extracted in the step (b) to