A method for transmitting a signal in a communication system includes transmitting a signal using pre-generated matrix, wherein the pre-generated matrix is generated by repeating one matrix including zero elements by a predetermined number of times and a particular sequence is allocated to non-zero elements included in the pre-generated matrix. An apparatus for receiving a signal in a communication system includes at least one processor configured to make a control to receive a transmitted signal based on a pre-generated matrix and to receive the signal, wherein the pre-generated matrix is generated by repeating one matrix including zero elements by a predetermined number of times and a particular sequence is allocated to non-zero elements included in the pre-generated matrix.