Patent ID: 8477829
Filing Date: 2013-07-02
Classification: H04B,H04L

Abstract:
1. A detection unit, comprising: a sequence providing unit operable, based on a differentially demodulated signal comprising data symbols each assigned a pseudo-noise (PN) sequence from a sequence set, the sequence set having a first group of first PN sequences and a second group of second PN sequences, the first and second PN sequences within their respective group differing from one another by a cyclic shift in chip values, the second group for each first PN sequence having a corresponding second PN sequence differing from the first PN sequence by an inversion of each second chip value, to provide a third group of derived sequences, the third group for each first PN sequence having a derived sequence assigned to the first PN sequence and adapted to be derived therefrom, the derived sequences of the third group differing from one another by a cyclic shift in their chip values; a correlation unit operable to calculate correlation results by correlating the differentially demodulated signal with each derived sequence of the third group; and an evaluation unit operable to derive the values of the data symbols by evaluating the correlation results.