Patent ID: 7848442

Claim:
A signal transmission method in a multi-input/multi-output (MIMO) communication system, the method comprising: interleaving coded bits for each of a plurality of transmission antennas by a plurality of interleavers, wherein each coded bit for each of the plurality of transmission antennas is individually interleaved by one of the plurality of interleavers; performing an interleaving on the interleaved coded bits collectively through the plurality of transmission antennas, wherein each interleaved coded bit for each of the plurality of transmission antennas is spatially interleaved; modulating the collectively interleaved data for each of the plurality of transmission antennas; spreading and scrambling the modulated data for each of the plurality of transmission antennas; and transmitting the spread scrambled data through each of the plurality of transmission antennas, wherein the data is coded at a different rate and modulated differently for each of the plurality of transmission antennas in consideration of a channel situation of each of the plurality of transmission antennas, wherein the channel situation of each transmission antenna and a allocation of the coded bits to each of the plurality of interleavers is determined according to feedback information from a receiving end, wherein the feedback information is a situation of a channel estimated by a pilot signal transmitted separately from each antenna or information including a calculated SINR (Signal to Interference Noise Ratio) of each transmission antenna, and wherein an SINR transmitted through each transmission antenna is measured in order to select a channel coding method and a modulation method used for each transmission antenna.