FIELD: information technology.
SUBSTANCE: transmission signal undergoes space-time coding on a set of space-time antenna groups, wherein each space-time antenna group is associated with a particular space-time code. The signal in each space-time antenna group undergoes beam formation on a set of antenna in the space-time antenna group. Each antenna in the set of antennae in the space-time antenna group is assigned a separate weighting coefficient relative the other antenna in that space-time group. Weighting coefficients for beam formation may vary depending on channel quality indication received from the receiver. The amplitude, phase or combination of amplitude and phase of each weighting coefficient or vector of the set of weighting coefficients may vary as a function of channel quality indication in order to improve quality of the received signal.
EFFECT: high carrying capacity from diversification in a receiver by applying beam formation to transmission signals coded on a transmission diversification scheme of space-time coding.
32 cl, 10 dwg
