The present invention relates to a transmitting device (1) for transmitting signals in a wireless communication system, wherein said signals are transmitted in consecutive frames (23a, 23b, 23c), each frame comprising a beacon (BSF) and data frames (DF), said transmitting device (1) comprising a first set of narrow beam antennas (2a, 2b, 2c), each narrow beam antenna (2a, 2b, 2c) having a different beaming direction corresponding to one of a number of different transmission paths (P0, P1, P2) from said transmitting device (1) to a receiving device, and a first control means (5) adapted to control the transmission of said frames (23a, 23b, 23c), whereby the data frames (DF) of respectively two consecutive frames (23a, 23b, 23c) are transmitted via different narrow beam antennas (2a, 2b, 2c).The present invention further relates to a receiving device (10) for receiving signals in a wireless communications system as well as to a method for transmitting signals in a wireless communications system and to a method for receiving signals in a wireless communication system.