Method and device for transmitting data in a communication system

A method performed by a wireless communication device including at least two transmitting antennas for transmitting data, comprising:

• transforming a plurality of bits of the data to be transmitted into a plurality of symbols by modulating the plurality of bits of the data;
• generating a first vector formed by the plurality of symbols;
• preparing a modified matrix by modifying an original matrix based on the number of rows of the first vector, the original matrix being predefined at the wireless communication device;
• generating a second vector by multiplying the first vector with the modified matrix;
• and
• transmitting symbols forming the second vector over communication channels established between the at least two transmitting antennas and at least one receiving antenna of a receiving apparatus,
• wherein the modified matrix is prepared by discarding one or more columns from the original matrix.

A wireless communication device transmitting data by at least two transmitting antennas, comprising:

• a modulating unit configured to transform a plurality of bits of the data to be transmitted into a plurality of symbols by modulating the plurality of bits of the data;
• a first vector generating unit configured to generate a first vector formed by the plurality of symbols;
• a modified matrix generating unit configured to generate a modified matrix by modifying an original matrix based on the number of rows of the first vector, the original matrix being predefined at the wireless communication device;
• a second vector generating unit configured to generate a second vector by multiplying the first vector with the modified matrix;
• and
• a transmitting unit configured to transmit symbols provided from the second vector over communication channels established between the at least two transmitting antennas and at least one receiving antenna of a receiving apparatus,
• wherein the modified matrix is prepared by discarding one or more columns from the original matrix.