Patent ID: 8170132

Claim:
A method for transmitting signals in a Multiple Antennas System (MAS), the method comprising: performing Alamouti coding on each group of common channel symbols to form two branches; selecting two different weight vectors for the two branches to perform beamforming; obtaining transmitting signals of each branch on each antenna, wherein two beam modes corresponding to the two weight vectors are uncorrelated and a peak-to-average power ratio of angle dimension of the two beam modes are lower than a preset threshold; superimposing the transmitting signals of the two branches on each antenna to obtain the superimposed signal on each antenna; and transmitting the superimposed signals; wherein the step of selecting different weight vectors for the two branches comprises selecting a phase φ(t) for each branch, and obtaining a weight vector w(t) based on a fundamental weight vector w by using the following formula: w ( t )=diag[1 e jφ(t) e j2φ(t) . . . e j(M−1)φ(t) ]w wherein t represents a branch sequence number, M represents a number of antennas, and the diag indicates that elements in the brackets form a diagonal matrix; and wherein the peak-to-average power ratio of a beam mode corresponding to the fundamental weight vector w in terms of angle dimension is lower than the preset threshold.