Patent ID: 8711965

Claim:
A method for transmitting in a communication system, said system comprising a transmitter, which comprises at least one first antenna and at least one second antenna and a receiver which comprises at least one receiving antenna, said method comprising: a step of determining a transmit diversity scheme for at least one group of symbols from among a plurality of modulated symbols, comprising at least one step of choosing a phase shift value of at least one symbol of said at least one group of symbols, said phase shift value being chosen based on: at least one phase shift parameter N, N being an integer, and N calculated quantities which are functions of responses (h k1 , h k2 ), respectively, between said at least one first transmitting antenna and said at least one receiving antenna and between said at least one second transmitting antenna and said at least one receiving antenna, at an emitting time k; and a step of phase shifting, which rotates said symbol of said phase shift value at a multiple of a π/N value, wherein said step of phase shifting comprise a step of choosing a highest quantity H n , among a plurality of quantities H k (n) where 0≦n≦N−1 and wherein said highest quantity H n determines a phase shift factor that is used to calculate said phase shift value.