FIELD: information technology.
SUBSTANCE: cell search by user equipment (UE) in a wireless communication system methods are described. In one aspect, a primary synchronisation code (PSC) sequence may be generated based on a Frank sequence and a constant amplitude sequence which is repeated multiple times. In another aspect, a set of PSC sequences may be generated based on complementary sequences having good aperiodic correlation properties and efficient implementations. In another version, PSC sequences A+B and B+A may be formed based on Golay complementary sequences A and B, there "+" denotes concatenation. In yet another aspect, a set of secondary synchronisation code (SSC) sequences may be generated based on a set of base sequences and different modulation symbols of a modulation scheme. Each base sequence may be modulated by each of M possible modulation symbols for the modulation scheme to obtain M different SSC sequences.
EFFECT: high synchronisation accuracy.
17 cl, 21 dwg
