The invention relates to a detection unit for detecting data symbols which are contained in a differentially demodulated signal and to which one respective PN sequence from a supply of sequences can be allocated at the transmission end. The inventive detection unit comprises the following units: a) a sequence supplying unit that is configured for supplying a third group of derived sequences. Saidthird group of derived sequences is provided with a derived sequence for each first PN sequence, which is assigned to said first PN sequence and can be derived therefrom by means of logical combinations but is not identical thereto while the derived sequences of the third group are different from each other only by cyclically shifting the chip values thereof; b) a correlation unit which is connected to the sequence supplying unit and is configured for calculating correlation results by correlating the differentially demodulated signal with each of the derived sequences of the third group; andc) an evaluation unit that is connected to the correlation unit and is configured for deriving the values of the data symbols by evaluating the correlation results. The invention also relates to a transceiver and an integrated circuit comprising such a detection unit.